{"id":67946,"date":"2026-10-23T06:12:54","date_gmt":"2026-10-23T00:42:54","guid":{"rendered":"https:\/\/johnsonfrancis.org\/professional\/?p=67946"},"modified":"2026-10-23T06:12:58","modified_gmt":"2026-10-23T00:42:58","slug":"new-series-of-interactive-cardiology-mcqs-8","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/","title":{"rendered":"New Series of Interactive Cardiology MCQs 8"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<!-- \n  INSTRUCTIONS FOR WORDPRESS:\n  1. Add a new \"Custom HTML\" block in your WordPress editor.\n  2. Copy everything from line 1 to the end of this file.\n  3. Paste it into the Custom HTML block.\n  4. Preview or Publish the post to see the interactive MCQs in action.\n-->\n\n<script src=\"https:\/\/cdn.tailwindcss.com\"><\/script>\n<script>\n  tailwind.config = {\n    corePlugins: {\n      preflight: false, \/\/ Ensures compatibility with WordPress themes\n    }\n  }\n<\/script>\n\n<div class=\"cardio-quiz-wrapper font-sans bg-slate-950 text-slate-200 p-4 md:p-8 rounded-3xl max-w-4xl mx-auto shadow-2xl relative overflow-hidden my-8 border border-cyan-900\/50\" style=\"box-sizing: border-box;\">\n  \n  <!-- Ambient Dark Medical Theme Glows -->\n  <div class=\"absolute top-0 left-0 w-full h-full pointer-events-none opacity-20 bg-[radial-gradient(ellipse_at_top,_var(--tw-gradient-stops))] from-cyan-600 via-slate-900 to-slate-950\"><\/div>\n  \n  <!-- Header Banner -->\n  <div class=\"relative text-center pb-6 border-b border-cyan-900\/50 mb-8\">\n    <div class=\"inline-block bg-gradient-to-r from-cyan-600 to-blue-700 text-white font-black text-xs md:text-sm px-4 py-1.5 rounded-full uppercase tracking-widest shadow-lg mb-4\">\n      Advanced Clinical Series\n    <\/div>\n    <h1 class=\"text-3xl md:text-5xl font-extrabold tracking-tight text-transparent bg-clip-text bg-gradient-to-r from-cyan-400 to-blue-400 m-0\">\n      Cardiology MCQs: Part 8\n    <\/h1>\n    <p class=\"text-sm md:text-base text-slate-400 mt-3 max-w-2xl mx-auto font-medium\">\n      Challenge yourself with master-level concepts in hemodynamics, structural interventions, EP, and advanced cardiovascular imaging.\n    <\/p>\n  <\/div>\n\n  <!-- Sticky Live Scoreboard -->\n  <div class=\"sticky top-4 z-40 bg-slate-900\/85 backdrop-blur-xl border border-cyan-800\/60 rounded-2xl p-4 md:p-5 mb-8 shadow-lg shadow-cyan-900\/20 flex flex-wrap items-center justify-between gap-4 transition-all\">\n    <div class=\"flex items-center gap-4\">\n      <div class=\"w-12 h-12 rounded-full bg-cyan-950 flex items-center justify-center border border-cyan-700 shadow-inner text-cyan-400\">\n        <svg class=\"w-6 h-6\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M13 10V3L4 14h7v7l9-11h-7z\"><\/path><\/svg>\n      <\/div>\n      <div>\n        <div class=\"text-[10px] md:text-xs uppercase font-extrabold tracking-widest text-cyan-500\">Live Score<\/div>\n        <div class=\"text-xl md:text-3xl font-black text-slate-100 flex items-baseline gap-1\">\n          <span id=\"score-correct\">0<\/span>\n          <span class=\"text-slate-500 text-sm md:text-lg font-bold\">\/ 25<\/span>\n        <\/div>\n      <\/div>\n    <\/div>\n    <div class=\"flex items-center gap-3 bg-slate-950\/80 px-4 py-2 rounded-xl border border-slate-800\">\n      <span class=\"text-xs font-bold text-slate-400 uppercase tracking-widest hidden sm:inline\">Progress<\/span>\n      <div class=\"w-24 md:w-32 bg-slate-800 h-2.5 rounded-full overflow-hidden\">\n        <div id=\"progress-bar\" class=\"bg-gradient-to-r from-cyan-500 to-blue-500 h-full w-0 transition-all duration-500 rounded-full\"><\/div>\n      <\/div>\n      <span class=\"text-xs font-bold text-cyan-400\"><span id=\"score-answered\">0<\/span>\/25<\/span>\n    <\/div>\n  <\/div>\n\n  <!-- Quiz Questions Container -->\n  <div class=\"space-y-6 relative\">\n    \n    <!-- QUESTION 1 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">1.<\/span> \n        During right heart catheterization, the presence of giant, prominent &#8216;v waves&#8217; in the pulmonary capillary wedge pressure (PCWP) tracing is most indicative of:\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Aortic stenosis causes elevated left ventricular end-diastolic pressure, but does not produce prominent v waves.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Severe aortic stenosis<\/button>\n        <button data-correct=\"false\" data-explanation=\"Mitral stenosis typically causes an elevated mean left atrial pressure and a prominent 'a wave', but not a giant 'v wave'.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Severe mitral stenosis<\/button>\n        <button data-correct=\"true\" data-explanation=\"Prominent 'v waves' in the PCWP tracing are the hemodynamic hallmark of severe mitral regurgitation. They occur due to the massive reflux of blood into the left atrium during ventricular systole.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Severe mitral regurgitation<\/button>\n        <button data-correct=\"false\" data-explanation=\"Constrictive pericarditis is characterized by prominent 'x' and 'y' descents and a 'square root' sign, not giant v waves.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Constrictive pericarditis<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 2 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">2.<\/span> \n        Idiopathic Ventricular Tachycardia originating from the Right Ventricular Outflow Tract (RVOT) classically presents on a 12-lead ECG with:\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"true\" data-explanation=\"RVOT VT is classically characterized by a Left Bundle Branch Block (LBBB) morphology (since it originates in the RV) and an inferior axis (since the activation spreads from the superior outflow tract downwards).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) LBBB morphology with an inferior axis<\/button>\n        <button data-correct=\"false\" data-explanation=\"LBBB with a superior axis would suggest an origin from the apical or inferior right ventricle, not the outflow tract.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) LBBB morphology with a superior axis<\/button>\n        <button data-correct=\"false\" data-explanation=\"RBBB morphology indicates the tachycardia originates in the left ventricle (e.g., fascicular VT).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) RBBB morphology with an inferior axis<\/button>\n        <button data-correct=\"false\" data-explanation=\"RBBB with superior axis suggests a left ventricular origin, such as posterior fascicular VT.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) RBBB morphology with a superior axis<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 3 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">3.<\/span> \n        Which landmark clinical trial demonstrated a mortality benefit for using transcatheter edge-to-edge repair (TEER, e.g., MitraClip) in highly selected patients with severe secondary (functional) mitral regurgitation and heart failure?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"The PARTNER trial established the efficacy of Transcatheter Aortic Valve Replacement (TAVR), not TEER for mitral regurgitation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) PARTNER<\/button>\n        <button data-correct=\"false\" data-explanation=\"The MITRA-FR trial evaluated TEER but failed to show a mortality benefit compared to medical therapy, largely because its patient population had more severe LV dilation relative to the degree of MR.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) MITRA-FR<\/button>\n        <button data-correct=\"true\" data-explanation=\"The COAPT trial showed a significant reduction in heart failure hospitalizations and all-cause mortality when TEER was added to guideline-directed medical therapy in patients with 'proportionate' severe secondary MR.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) COAPT<\/button>\n        <button data-correct=\"false\" data-explanation=\"The ISCHEMIA trial evaluated conservative vs invasive strategies in stable ischemic heart disease.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) ISCHEMIA<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 4 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">4.<\/span> \n        In patients with a high bleeding risk (HBR) who undergo percutaneous coronary intervention (PCI) with a modern drug-eluting stent (DES) for stable angina, current guidelines suggest Dual Antiplatelet Therapy (DAPT) can be safely shortened to:\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"true\" data-explanation=\"Recent studies (e.g., MASTER DAPT, LEADERS FREE) have demonstrated that in patients with High Bleeding Risk, 1 to 3 months of DAPT followed by single antiplatelet therapy is safe and non-inferior to longer regimens when modern DES are used.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) 1 to 3 months<\/button>\n        <button data-correct=\"false\" data-explanation=\"6 months is standard for normal bleeding risk patients with stable ischemic heart disease, but can be shortened for HBR patients.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) 6 months<\/button>\n        <button data-correct=\"false\" data-explanation=\"12 months is standard for Acute Coronary Syndromes (ACS), not stable angina in HBR patients.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) 12 months<\/button>\n        <button data-correct=\"false\" data-explanation=\"Indefinite DAPT is very rarely recommended and significantly increases mortality from bleeding in HBR patients.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Indefinitely<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 5 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">5.<\/span> \n        On Cardiac Magnetic Resonance (CMR) imaging, the calculation of Extracellular Volume (ECV) via T1 mapping is most drastically elevated in which of the following cardiomyopathies?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Hypertrophic cardiomyopathy has localized areas of fibrosis (elevated ECV), but not usually the massive global elevation seen in infiltrative diseases.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Hypertrophic cardiomyopathy<\/button>\n        <button data-correct=\"false\" data-explanation=\"Dilated cardiomyopathy exhibits variable, mild-to-moderate elevation in ECV due to diffuse fibrosis.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Non-ischemic dilated cardiomyopathy<\/button>\n        <button data-correct=\"false\" data-explanation=\"Fabry disease involves intracellular lipid accumulation. This classically lowers native T1 values, and ECV is typically not massively elevated until late-stage replacement fibrosis occurs.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Fabry disease<\/button>\n        <button data-correct=\"true\" data-explanation=\"Cardiac amyloidosis involves massive extracellular deposition of amyloid fibrils, leading to the highest Extracellular Volume (ECV) measurements (often >40%) seen on CMR.&#8221; class=&#8221;opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300&#8243;>D) Cardiac amyloidosis<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 6 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">6.<\/span> \n        The underlying pathophysiological mechanism of pulsus paradoxus in cardiac tamponade is primarily driven by:\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"true\" data-explanation=\"Due to the fixed total volume of the tense pericardial sac, increased right heart filling during inspiration bows the interventricular septum to the left, impairing LV filling and dropping stroke volume (ventricular interdependence).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Enhanced ventricular interdependence<\/button>\n        <button data-correct=\"false\" data-explanation=\"Cardiac tamponade actually increases sympathetic tone leading to tachycardia, not vagal tone.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Sudden increases in vagal tone during inspiration<\/button>\n        <button data-correct=\"false\" data-explanation=\"Diastolic equalization of pressures occurs in tamponade, but the phenomenon of pulsus paradoxus relies on the shifting of the septum (interdependence).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Equalization of all diastolic pressures<\/button>\n        <button data-correct=\"false\" data-explanation=\"Autonomic dysfunction causes orthostatic hypotension, not inspiratory blood pressure drops.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Autonomic nervous system dysfunction<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 7 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">7.<\/span> \n        In patients with Wolff-Parkinson-White (WPW) syndrome, what differentiates Antidromic AVRT from Orthodromic AVRT on a 12-lead ECG?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Orthodromic AVRT uses the AV node anterogradely, resulting in a narrow QRS. Antidromic uses the accessory pathway anterogradely, producing a wide QRS.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Antidromic has a narrow QRS complex<\/button>\n        <button data-correct=\"true\" data-explanation=\"Antidromic AVRT travels DOWN the accessory pathway (bypassing the His-Purkinje system) and UP the AV node, resulting in fully pre-excited, wide QRS complexes.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Antidromic has a wide QRS complex<\/button>\n        <button data-correct=\"false\" data-explanation=\"Both types are regular tachycardias. Irregular rhythms in WPW suggest Atrial Fibrillation with pre-excitation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Antidromic is an irregularly irregular rhythm<\/button>\n        <button data-correct=\"false\" data-explanation=\"Delta waves are seen during sinus rhythm in WPW. During Orthodromic AVRT, the delta wave is lost. During Antidromic, the entire QRS is a massive delta wave (fully pre-excited).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Orthodromic has prominent delta waves during tachycardia<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 8 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">8.<\/span> \n        What is the primary FDA-approved indication for percutaneous Left Atrial Appendage (LAA) closure devices (e.g., Watchman)?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Valvular AF (like rheumatic mitral stenosis) is a contraindication for LAA closure devices; these patients require Vitamin K Antagonists.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Valvular atrial fibrillation with prior stroke<\/button>\n        <button data-correct=\"false\" data-explanation=\"These devices are not indicated for restoring sinus rhythm or preventing arrhythmias; they only prevent thromboembolism.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Refractory symptomatic paroxysmal atrial fibrillation<\/button>\n        <button data-correct=\"true\" data-explanation=\"LAA closure is indicated to reduce stroke risk in patients with non-valvular atrial fibrillation who need anticoagulation but have an appropriate rationale to seek a non-pharmacologic alternative (e.g., high risk of bleeding on long-term OAC).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Non-valvular atrial fibrillation in patients at high risk for bleeding on oral anticoagulants<\/button>\n        <button data-correct=\"false\" data-explanation=\"Post-PFO closure patients do not require LAA closure devices.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Cryptogenic stroke following PFO closure<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 9 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">9.<\/span> \n        Which class of medications recently became the first to definitively show a reduction in cardiovascular death and heart failure hospitalizations in patients with Heart Failure with PRESERVED Ejection Fraction (HFpEF)?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"While ARNIs (Sacubitril\/Valsartan) showed some borderline benefits in HFpEF (PARAGON-HF), they missed their primary endpoint for definitive broad approval.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Angiotensin receptor-neprilysin inhibitors (ARNIs)<\/button>\n        <button data-correct=\"true\" data-explanation=\"SGLT2 inhibitors (like Empagliflozin in EMPEROR-Preserved and Dapagliflozin in DELIVER) are the first drugs to unequivocally improve clinical outcomes in HFpEF.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) SGLT2 inhibitors<\/button>\n        <button data-correct=\"false\" data-explanation=\"Aldosterone antagonists (Spironolactone) reduced hospitalizations in TOPCAT, but did not definitively reduce cardiovascular death across all regions.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Mineralocorticoid receptor antagonists (MRAs)<\/button>\n        <button data-correct=\"false\" data-explanation=\"Beta-blockers do not improve outcomes in HFpEF and may worsen symptoms by blunting chronotropic competence.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Beta-blockers<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 10 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">10.<\/span> \n        In Hypertrophic Obstructive Cardiomyopathy (HOCM), the dynamic left ventricular outflow tract (LVOT) obstruction is primarily caused by asymmetric septal hypertrophy and what other essential echocardiographic finding?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"true\" data-explanation=\"Systolic Anterior Motion (SAM) of the anterior mitral valve leaflet toward the hypertrophied septum is the primary mechanism causing dynamic LVOT obstruction (and secondary mitral regurgitation) in HOCM.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Systolic Anterior Motion (SAM) of the mitral valve<\/button>\n        <button data-correct=\"false\" data-explanation=\"Prolapse of the posterior leaflet causes primary mitral regurgitation, but it does not cause LVOT obstruction in HOCM.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Prolapse of the posterior mitral valve leaflet<\/button>\n        <button data-correct=\"false\" data-explanation=\"While diastolic dysfunction occurs in HOCM, SAM of the mitral valve is the structural phenomenon creating the physical outflow obstruction.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Severe left ventricular diastolic dysfunction<\/button>\n        <button data-correct=\"false\" data-explanation=\"Mid-ventricular obliteration can occur in HOCM variants, but classic LVOT obstruction requires SAM.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Mid-ventricular muscular obliteration<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 11 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">11.<\/span> \n        Ebstein anomaly is a congenital heart defect most frequently associated with which distinct electrocardiographic finding?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Left bundle branch block is rare in Ebstein anomaly; RBBB is much more common due to right-sided dilation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Left bundle branch block<\/button>\n        <button data-correct=\"false\" data-explanation=\"Brugada pattern involves coved ST elevation in V1-V3, which is unrelated to the structural defects of Ebstein anomaly.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Brugada pattern (Type 1)<\/button>\n        <button data-correct=\"true\" data-explanation=\"Up to 20-30% of patients with Ebstein anomaly have associated right-sided accessory pathways, frequently manifesting as Wolff-Parkinson-White (WPW) syndrome on ECG.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Wolff-Parkinson-White (WPW) pre-excitation<\/button>\n        <button data-correct=\"false\" data-explanation=\"Complete AV block is classically associated with congenitally corrected transposition of the great arteries (L-TGA) or maternal lupus, not Ebstein anomaly.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Congenital complete AV block<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 12 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">12.<\/span> \n        The Brockenbrough-Braunwald-Morrow sign, observed during cardiac catheterization, describes:\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"This describes a normal physiologic response to a PVC in most patients (the compensatory pause allows more filling, causing a stronger next beat).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) An increase in pulse pressure following a PVC<\/button>\n        <button data-correct=\"true\" data-explanation=\"In HOCM, a post-PVC beat has increased contractility (post-extrasystolic potentiation). This stronger contraction worsens the dynamic LVOT obstruction, leading to a paradoxical DROP in aortic pulse pressure, known as the Brockenbrough sign.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) A paradoxical decrease in aortic pulse pressure following a PVC in HOCM<\/button>\n        <button data-correct=\"false\" data-explanation=\"Equalization of diastolic pressures is a sign of tamponade or constriction, not the Brockenbrough sign.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Equalization of left and right ventricular diastolic pressures<\/button>\n        <button data-correct=\"false\" data-explanation=\"Rapid 'y' descent is characteristic of constrictive pericarditis (Friedreich's sign).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) An exaggerated rapid &#8216;y&#8217; descent in the right atrium<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 13 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">13.<\/span> \n        Commotio cordis causes sudden cardiac death in young athletes following blunt chest trauma primarily by triggering Ventricular Fibrillation via which electrophysiological mechanism?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Myocardial rupture causes mechanical failure and pulseless electrical activity (PEA), not instant primary ventricular fibrillation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Direct mechanical rupture of the myocardium<\/button>\n        <button data-correct=\"true\" data-explanation=\"Commotio cordis occurs when a blunt impact (like a baseball) strikes the chest precisely during the vulnerable phase of repolarization (the upstroke of the T wave), triggering an R-on-T phenomenon that induces Ventricular Fibrillation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) The R-on-T phenomenon<\/button>\n        <button data-correct=\"false\" data-explanation=\"Coronary vasospasm (Prinzmetal angina) can cause ischemia but is not the immediate mechanism of commotio cordis.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Immediate coronary artery vasospasm<\/button>\n        <button data-correct=\"false\" data-explanation=\"Damage to the AV node would cause heart block (bradycardia), not primary ventricular fibrillation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Physical transection of the AV node<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 14 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">14.<\/span> \n        Adenosine slows AV nodal conduction primarily by agonizing which specific receptor?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"true\" data-explanation=\"Adenosine acts on the A1 receptors in the AV node, activating inhibitory G-proteins (Gi) that open potassium channels (causing hyperpolarization) and inhibit calcium channels, effectively stopping AV conduction.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) A1 receptor<\/button>\n        <button data-correct=\"false\" data-explanation=\"A2A receptors are primarily responsible for coronary and systemic vasodilation (used during pharmacologic nuclear stress testing like Lexiscan\/Regadenoson).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) A2A receptor<\/button>\n        <button data-correct=\"false\" data-explanation=\"A2B receptors are implicated in bronchospasm and mast cell degranulation, causing the side effect of chest tightness.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) A2B receptor<\/button>\n        <button data-correct=\"false\" data-explanation=\"A3 receptors are involved in ischemic preconditioning and cardioprotection, not immediate AV node slowing.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) A3 receptor<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 15 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">15.<\/span> \n        In which of the following scenarios is Surgical Aortic Valve Replacement (SAVR) generally preferred over Transcatheter Aortic Valve Replacement (TAVR) according to current guidelines?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"TAVR is highly indicated and preferred in patients aged >80 due to their higher surgical risk and lower concern for long-term valve durability.&#8221; class=&#8221;opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300&#8243;>A) An 82-year-old with trileaflet severe AS and prohibitive surgical risk<\/button>\n        <button data-correct=\"false\" data-explanation=\"History of CABG (with patent grafts) makes open chest surgery difficult (redo sternotomy), making TAVR the preferred choice.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) A 75-year-old with prior CABG and patent grafts<\/button>\n        <button data-correct=\"true\" data-explanation=\"Guidelines recommend SAVR over TAVR in young patients (typically < 65 years) who need concomitant repair of a severely dilated ascending aorta, a common complication of bicuspid valve disease.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) A 55-year-old with bicuspid AS and a 5.5 cm ascending aortic aneurysm<\/button>\n        <button data-correct=\"false\" data-explanation=\"While severe MAC can complicate SAVR, TAVR is still frequently performed in these patients, though procedural risks are higher.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) A 78-year-old with severe mitral annular calcification (MAC)<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 16 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">16.<\/span> \n        During a nuclear myocardial perfusion stress test (SPECT), the finding of Transient Ischemic Dilation (TID) of the left ventricle post-stress is highly suggestive of:\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"A single small distal lesion typically causes a localized perfusion defect, not global ventricular dilation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) A small, single-vessel distal stenosis<\/button>\n        <button data-correct=\"true\" data-explanation=\"TID occurs when diffuse subendocardial ischemia causes the LV cavity to appear larger on stress images than resting images. This is a high-risk marker for severe multi-vessel or left main coronary artery disease.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Severe multi-vessel or Left Main coronary artery disease<\/button>\n        <button data-correct=\"false\" data-explanation=\"Prior infarcts present as fixed defects, they do not cause transient, stress-induced dilation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Prior completed myocardial infarction with scar<\/button>\n        <button data-correct=\"false\" data-explanation=\"Artifacts can occur, but TID is a recognized, true pathologic marker of balanced severe ischemia, not a breast attenuation artifact.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Breast tissue attenuation artifact<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 17 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">17.<\/span> \n        According to ACC\/AHA guidelines, which profile represents a Class I indication for Cardiac Resynchronization Therapy (CRT\/Biventricular Pacing)?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"true\" data-explanation=\"A Class I indication for CRT is symptomatic heart failure (NYHA II-IV), LVEF <= 35%, and a Left Bundle Branch Block (LBBB) with a QRS duration >= 150 ms.&#8221; class=&#8221;opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300&#8243;>A) LVEF <= 35%, LBBB, QRS >= 150 ms<\/button>\n        <button data-correct=\"false\" data-explanation=\"Right Bundle Branch Block (RBBB) typically does not benefit as robustly from CRT as LBBB does (Class IIa or IIb indication).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) LVEF <= 35%, RBBB, QRS >= 150 ms<\/button>\n        <button data-correct=\"false\" data-explanation=\"An EF of 45% (mildly reduced) without an indication for ventricular pacing is not an indication for CRT.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) LVEF 45%, LBBB, QRS >= 150 ms<\/button>\n        <button data-correct=\"false\" data-explanation=\"A narrow QRS (< 130 ms) indicates synchronized ventricular contraction; placing a CRT in this population actually increases mortality (ECHO-CRT trial).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) LVEF <= 35%, Normal axis, QRS < 120 ms<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 18 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">18.<\/span> \n        When calculating cardiac output in the cath lab using the estimated Fick method, what is the most common source of calculation error?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Hemoglobin can be directly measured easily and accurately via a standard blood draw.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Inaccurate measurement of serum hemoglobin<\/button>\n        <button data-correct=\"false\" data-explanation=\"Arterial saturation is directly measured via arterial blood gas and is highly accurate.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Inaccurate reading of arterial oxygen saturation<\/button>\n        <button data-correct=\"false\" data-explanation=\"Mixed venous saturation is directly sampled from the pulmonary artery and is quite accurate.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Poor sampling technique for mixed venous saturation<\/button>\n        <button data-correct=\"true\" data-explanation=\"In most labs, Oxygen Consumption (VO2) is estimated based on age, height, and weight using nomograms (like LaFarge or Dehmer), rather than directly measured. This assumption is the largest source of error in the estimated Fick calculation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Assumptions made regarding resting oxygen consumption (VO2)<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 19 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">19.<\/span> \n        Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) is fundamentally a genetic disease of which myocardial structure?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Sarcomeric proteins (like MYH7, MYBPC3) are mutated in Hypertrophic Cardiomyopathy (HOCM).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) The sarcomere<\/button>\n        <button data-correct=\"true\" data-explanation=\"ARVC is caused by mutations in desmosomal proteins (such as Plakophilin-2, Desmoplakin, and Desmoglein-2), which link cardiac myocytes together. Under mechanical stress, these links break, leading to cell death and fibrofatty replacement.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) The desmosome<\/button>\n        <button data-correct=\"false\" data-explanation=\"Nuclear envelope mutations (like Lamin A\/C) cause specific subsets of Dilated Cardiomyopathy.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) The nuclear envelope<\/button>\n        <button data-correct=\"false\" data-explanation=\"Ion channel genes (like SCN5A or KCNQ1) cause primary electrical channelopathies (Brugada, Long QT), not the structural fibrofatty replacement of ARVC.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Voltage-gated sodium channels<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 20 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">20.<\/span> \n        Which of the following is the most lethal, albeit less common, adverse side effect of long-term Amiodarone therapy?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Corneal microdeposits occur in virtually 100% of long-term amiodarone users, but they rarely affect vision and are completely benign.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Corneal microdeposits<\/button>\n        <button data-correct=\"false\" data-explanation=\"Thyroid dysfunction (both hypo- and hyperthyroidism) is common but highly manageable medically.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Hypothyroidism<\/button>\n        <button data-correct=\"true\" data-explanation=\"Pulmonary toxicity (amiodarone-induced interstitial pneumonitis or fibrosis) occurs in about 1-5% of patients but carries a mortality rate of up to 10%, making it the most feared complication.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Pulmonary fibrosis \/ pneumonitis<\/button>\n        <button data-correct=\"false\" data-explanation=\"Blue-grey skin discoloration ('smurf skin') is a cosmetic side effect of amiodarone, but it is not lethal.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Blue-grey skin discoloration<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 21 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">21.<\/span> \n        In classic Rheumatic Mitral Stenosis, the morphological hallmark that leads to the narrowing of the valve orifice is primarily:\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Severe annular calcification (MAC) is a degenerative process seen in the elderly or ESRD, distinct from the autoimmune rheumatic process.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Heavy calcification of the mitral annulus<\/button>\n        <button data-correct=\"true\" data-explanation=\"Rheumatic fever causes inflammation that leads to the classic 'commissural fusion' (fusion of the leaflets at their edges), resulting in a 'fish-mouth' or 'buttonhole' deformity of the mitral valve.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Fusion of the leaflet commissures<\/button>\n        <button data-correct=\"false\" data-explanation=\"Myxomatous degeneration causes floppy, elongated leaflets leading to Mitral Valve Prolapse and regurgitation, not stenosis.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Myxomatous degeneration of the leaflets<\/button>\n        <button data-correct=\"false\" data-explanation=\"Rupture of chordae causes acute, severe mitral regurgitation, not stenosis.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Rupture of primary chordae tendineae<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 22 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">22.<\/span> \n        A 45-year-old symptomatic patient presents to the ER with chest pain and receives a Coronary Artery Calcium (CAC) score of 0. Why can obstructive coronary artery disease NOT be completely ruled out?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"The CAC scanner uses standard non-contrast CT protocols; patient movement blurs the image but does not artificially drop a severe score to true zero.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Microvascular dysfunction creates false negatives<\/button>\n        <button data-correct=\"true\" data-explanation=\"A CAC score only detects calcified, mature atherosclerotic plaque. In younger patients (like a 45-year-old), acute coronary syndromes are frequently caused by the rupture of 'soft', non-calcified, lipid-rich plaques which a CAC score of 0 will completely miss.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) The test cannot detect non-calcified, soft lipid-rich plaques<\/button>\n        <button data-correct=\"false\" data-explanation=\"Coronary vasospasm can cause angina, but the primary reason a CAC score misses physical obstructive CAD is its inability to see soft plaque.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) The patient likely has pure coronary vasospasm<\/button>\n        <button data-correct=\"false\" data-explanation=\"Intramyocardial bridging is a structural anomaly, but is not the primary limitation of CAC scoring in detecting atherosclerotic obstructive disease.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Intramyocardial bridging shields the arteries from x-rays<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 23 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">23.<\/span> \n        For optimal hemodynamic support, an Intra-Aortic Balloon Pump (IABP) should be timed to:\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Inflating during systole would massively increase LV afterload and severely impair cardiac output.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Inflate during systole and deflate during diastole<\/button>\n        <button data-correct=\"true\" data-explanation=\"The IABP uses 'counterpulsation'. It inflates at the onset of diastole (dicrotic notch) to force blood into the coronary arteries, and rapidly deflates just before systole (R wave) to create a vacuum effect, reducing LV afterload.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Inflate at the onset of diastole and deflate just before systole<\/button>\n        <button data-correct=\"false\" data-explanation=\"The inflation must happen AFTER the aortic valve closes (onset of diastole), not immediately at the R wave (which triggers systole).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) Inflate exactly at the R wave on the ECG<\/button>\n        <button data-correct=\"false\" data-explanation=\"Deflating at the dicrotic notch defeats the purpose of diastolic augmentation, as diastole is just beginning.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Deflate at the dicrotic notch on the arterial tracing<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 24 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">24.<\/span> \n        In a patient with a known genetic predisposition for Brugada Syndrome, which of the following common systemic stressors is a well-known trigger that can acutely unmask the Type 1 Brugada ECG pattern and induce fatal arrhythmias?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"false\" data-explanation=\"Dehydration may cause sinus tachycardia or hypotension, but it is not a specific trigger for the sodium channel dysfunction in Brugada syndrome.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Severe dehydration<\/button>\n        <button data-correct=\"false\" data-explanation=\"Hypocalcemia prolongs the QT interval but is not a classic trigger for Brugada syndrome.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Hypocalcemia<\/button>\n        <button data-correct=\"true\" data-explanation=\"Fever is a highly potent trigger for unmasking Brugada syndrome. The mutant sodium channels (SCN5A) become even more defective at higher temperatures, prompting acute coved ST-elevations and V-Fib.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) High fever<\/button>\n        <button data-correct=\"false\" data-explanation=\"Hypoglycemia can cause adrenergic surges and sinus tachycardia, but fever is the classic environmental trigger for Brugada.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Hypoglycemia<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n    <!-- QUESTION 25 -->\n    <div class=\"mcq-card bg-slate-900 border border-slate-800 rounded-2xl p-5 md:p-6 shadow-md transition-all duration-300 hover:border-cyan-800\/50\" data-answered=\"false\">\n      <h3 class=\"text-lg md:text-xl font-bold text-slate-100 mb-5 leading-snug flex gap-3\">\n        <span class=\"text-cyan-500 font-black\">25.<\/span> \n        Cilostazol is frequently used to treat the symptoms of intermittent claudication in peripheral artery disease. What is its exact mechanism of action?\n      <\/h3>\n      <div class=\"grid grid-cols-1 md:grid-cols-2 gap-3 mb-2\">\n        <button data-correct=\"true\" data-explanation=\"Cilostazol is a phosphodiesterase-3 (PDE-3) inhibitor. It increases intracellular cAMP, promoting vasodilation and inhibiting platelet aggregation.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">A) Phosphodiesterase-3 (PDE-3) inhibitor<\/button>\n        <button data-correct=\"false\" data-explanation=\"PDE-5 inhibitors include medications like sildenafil and tadalafil, used for erectile dysfunction or pulmonary hypertension.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">B) Phosphodiesterase-5 (PDE-5) inhibitor<\/button>\n        <button data-correct=\"false\" data-explanation=\"Clopidogrel, Prasugrel, and Ticagrelor are P2Y12 receptor blockers.\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">C) ADP P2Y12 receptor antagonist<\/button>\n        <button data-correct=\"false\" data-explanation=\"Aspirin irreversibly inhibits cyclooxygenase-1 (COX-1).\" class=\"opt-btn w-full text-left p-4 rounded-xl border border-slate-700 bg-slate-950 hover:bg-slate-800 hover:border-slate-500 transition-all text-sm md:text-base font-semibold text-slate-300\">D) Irreversible COX-1 inhibitor<\/button>\n      <\/div>\n      <div class=\"feedback-box hidden p-4 rounded-xl text-sm leading-relaxed mt-4\"><\/div>\n    <\/div>\n\n  <\/div>\n<\/div>\n\n<script>\n  document.addEventListener('DOMContentLoaded', () => {\n    const cards = document.querySelectorAll('.mcq-card');\n    const scoreCorrectEl = document.getElementById('score-correct');\n    const scoreAnsweredEl = document.getElementById('score-answered');\n    const progressBar = document.getElementById('progress-bar');\n    \n    let correctCount = 0;\n    let answeredCount = 0;\n    const totalQuestions = cards.length;\n\n    cards.forEach(card => {\n      const buttons = card.querySelectorAll('.opt-btn');\n      const feedbackBox = card.querySelector('.feedback-box');\n\n      buttons.forEach(btn => {\n        btn.addEventListener('click', function() {\n          \n          \/\/ 1. Prevent answering more than once per card\n          if (card.getAttribute('data-answered') === 'true') return;\n          card.setAttribute('data-answered', 'true');\n          \n          answeredCount++;\n          \n          \/\/ 2. Safely extract attributes logic\n          const isCorrect = this.getAttribute('data-correct') === 'true';\n          const explanationText = this.getAttribute('data-explanation');\n\n          \/\/ 3. Update global UI Scoreboard\n          scoreAnsweredEl.innerText = answeredCount;\n          progressBar.style.width = `${(answeredCount \/ totalQuestions) * 100}%`;\n\n          if (isCorrect) {\n            correctCount++;\n            scoreCorrectEl.innerText = correctCount;\n          }\n\n          \/\/ 4. Style all buttons in the card\n          buttons.forEach(b => {\n            b.disabled = true;\n            b.classList.remove('hover:bg-slate-800', 'hover:border-slate-500', 'cursor-pointer');\n            b.classList.add('opacity-50', 'cursor-not-allowed');\n            \n            \/\/ Emphasize the correct answer\n            if (b.getAttribute('data-correct') === 'true') {\n              b.classList.remove('opacity-50', 'bg-slate-950', 'border-slate-700');\n              b.classList.add('opacity-100', 'bg-emerald-950', 'border-emerald-500', 'text-emerald-300');\n              b.innerHTML += ' <span class=\"float-right text-emerald-400 font-bold tracking-wider\">\u2713<\/span>';\n            }\n          });\n\n          \/\/ 5. Highlight the clicked wrong answer (if missed)\n          if (!isCorrect) {\n            this.classList.remove('opacity-50', 'bg-slate-950', 'border-slate-700');\n            this.classList.add('opacity-100', 'bg-rose-950', 'border-rose-500', 'text-rose-300');\n            this.innerHTML += ' <span class=\"float-right text-rose-400 font-bold tracking-wider\">\u2717<\/span>';\n          }\n\n          \/\/ 6. Show the explanation safely using Text Nodes\/Templates\n          feedbackBox.innerHTML = `\n            <div class=\"font-extrabold uppercase tracking-widest text-xs mb-1.5 ${isCorrect ? 'text-emerald-400' : 'text-rose-400'}\">\n              ${isCorrect ? 'Correct!' : 'Incorrect'}\n            <\/div>\n            <p class=\"m-0 text-slate-300\">${explanationText}<\/p>\n          `;\n          \n          feedbackBox.classList.remove('hidden');\n          feedbackBox.classList.add(\n            'block', \n            isCorrect ? 'bg-emerald-950\/30' : 'bg-rose-950\/30', \n            'border', \n            isCorrect ? 'border-emerald-900\/50' : 'border-rose-900\/50'\n          );\n        });\n      });\n    });\n  });\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Advanced Clinical Series Cardiology MCQs: Part 8 Challenge yourself with master-level concepts in hemodynamics, structural interventions, EP, and advanced cardiovascular imaging. Live Score 0 \/ 25 Progress 0\/25 1. During right heart catheterization, the presence of giant, prominent &#8216;v waves&#8217; in the pulmonary capillary wedge pressure (PCWP) tracing is most indicative of: A) Severe aortic [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":67948,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-67946","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>New Series of Interactive Cardiology MCQs 8 - All About Cardiovascular System and Disorders<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New Series of Interactive Cardiology MCQs 8 - All About Cardiovascular System and Disorders\" \/>\n<meta property=\"og:description\" content=\"Advanced Clinical Series Cardiology MCQs: Part 8 Challenge yourself with master-level concepts in hemodynamics, structural interventions, EP, and advanced cardiovascular imaging. Live Score 0 \/ 25 Progress 0\/25 1. During right heart catheterization, the presence of giant, prominent &#8216;v waves&#8217; in the pulmonary capillary wedge pressure (PCWP) tracing is most indicative of: A) Severe aortic [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Cardiovascular System and Disorders\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-23T00:42:54+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-23T00:42:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2026\/10\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1263\" \/>\n\t<meta property=\"og:image:height\" content=\"706\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"headline\":\"New Series of Interactive Cardiology MCQs 8\",\"datePublished\":\"2026-10-23T00:42:54+00:00\",\"dateModified\":\"2026-10-23T00:42:58+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/\"},\"wordCount\":764,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg\",\"articleSection\":[\"General Cardiology\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/\",\"name\":\"New Series of Interactive Cardiology MCQs 8 - All About Cardiovascular System and Disorders\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg\",\"datePublished\":\"2026-10-23T00:42:54+00:00\",\"dateModified\":\"2026-10-23T00:42:58+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/#primaryimage\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg\",\"contentUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg\",\"width\":1263,\"height\":706},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/new-series-of-interactive-cardiology-mcqs-8\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"New Series of Interactive Cardiology MCQs 8\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/\",\"name\":\"All About Cardiovascular System and Disorders\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\",\"name\":\"Johnson Francis\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"caption\":\"Johnson Francis\"},\"logo\":{\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\"},\"description\":\"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/author\\\/jf\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"New Series of Interactive Cardiology MCQs 8 - All About Cardiovascular System and Disorders","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/","og_locale":"en_US","og_type":"article","og_title":"New Series of Interactive Cardiology MCQs 8 - All About Cardiovascular System and Disorders","og_description":"Advanced Clinical Series Cardiology MCQs: Part 8 Challenge yourself with master-level concepts in hemodynamics, structural interventions, EP, and advanced cardiovascular imaging. Live Score 0 \/ 25 Progress 0\/25 1. During right heart catheterization, the presence of giant, prominent &#8216;v waves&#8217; in the pulmonary capillary wedge pressure (PCWP) tracing is most indicative of: A) Severe aortic [&hellip;]","og_url":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/","og_site_name":"All About Cardiovascular System and Disorders","article_published_time":"2026-10-23T00:42:54+00:00","article_modified_time":"2026-10-23T00:42:58+00:00","og_image":[{"width":1263,"height":706,"url":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2026\/10\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg","type":"image\/jpeg"}],"author":"Johnson Francis","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Johnson Francis","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/#article","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/"},"author":{"name":"Johnson Francis","@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"headline":"New Series of Interactive Cardiology MCQs 8","datePublished":"2026-10-23T00:42:54+00:00","dateModified":"2026-10-23T00:42:58+00:00","mainEntityOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/"},"wordCount":764,"publisher":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/#primaryimage"},"thumbnailUrl":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2026\/10\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg","articleSection":["General Cardiology"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/","url":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/","name":"New Series of Interactive Cardiology MCQs 8 - All About Cardiovascular System and Disorders","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#website"},"primaryImageOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/#primaryimage"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/#primaryimage"},"thumbnailUrl":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2026\/10\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg","datePublished":"2026-10-23T00:42:54+00:00","dateModified":"2026-10-23T00:42:58+00:00","breadcrumb":{"@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/#primaryimage","url":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2026\/10\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg","contentUrl":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2026\/10\/New-Series-of-Interactive-Cardiology-MCQs-8.jpg","width":1263,"height":706},{"@type":"BreadcrumbList","@id":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-8\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/johnsonfrancis.org\/professional\/"},{"@type":"ListItem","position":2,"name":"New Series of Interactive Cardiology MCQs 8"}]},{"@type":"WebSite","@id":"https:\/\/johnsonfrancis.org\/professional\/#website","url":"https:\/\/johnsonfrancis.org\/professional\/","name":"All About Cardiovascular System and Disorders","description":"","publisher":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/johnsonfrancis.org\/professional\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec","name":"Johnson Francis","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","caption":"Johnson Francis"},"logo":{"@id":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g"},"description":"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal","url":"https:\/\/johnsonfrancis.org\/professional\/author\/jf\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/67946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/comments?post=67946"}],"version-history":[{"count":1,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/67946\/revisions"}],"predecessor-version":[{"id":67949,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/67946\/revisions\/67949"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/media\/67948"}],"wp:attachment":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/media?parent=67946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/categories?post=67946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/tags?post=67946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}