{"id":67929,"date":"2026-10-22T12:38:21","date_gmt":"2026-10-22T07:08:21","guid":{"rendered":"https:\/\/johnsonfrancis.org\/professional\/?p=67929"},"modified":"2026-10-23T07:12:04","modified_gmt":"2026-10-23T01:42:04","slug":"new-series-of-interactive-cardiology-mcqs-2","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/new-series-of-interactive-cardiology-mcqs-2\/","title":{"rendered":"New Series of Interactive Cardiology MCQs 2"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Please ignore the questions with incomplete options as they have errors in code!<\/strong><\/p>\n\n\n\n<!-- \n  INSTRUCTIONS FOR WORDPRESS:\n  1. In your WordPress editor (Gutenberg), add a new \"Custom HTML\" block.\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<!-- Load Tailwind CSS safely for WordPress (disables global resets so your theme doesn't break) -->\n<script src=\"https:\/\/cdn.tailwindcss.com\"><\/script>\n<script>\n  tailwind.config = {\n    corePlugins: {\n      preflight: false, \/\/ Important: prevents Tailwind from overriding your WP theme's base styles\n    }\n  }\n<\/script>\n\n<div class=\"mcq-widget-container max-w-3xl mx-auto p-4 font-sans text-base text-gray-800\">\n\n    <!-- MCQ 1 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            1. What is the most common cause of functional tricuspid regurgitation?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Infective endocarditis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Carcinoid syndrome<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Right ventricular dilation<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Rheumatic heart disease<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Functional TR is usually due to annular dilation from right ventricular enlargement or pulmonary hypertension.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 2 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            2. Which ECG finding is most specific for acute pericarditis?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Diffuse ST elevation<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) PR segment depression<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) T wave inversion<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Electrical alternans<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> PR segment depression is highly specific for acute pericarditis and represents atrial injury.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 3 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            3. What is the primary mechanism of action of Sacubitril?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Angiotensin receptor blockade<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Neprilysin inhibition<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Aldosterone antagonism<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Beta-1 adrenergic blockade<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Sacubitril is a prodrug that inhibits neprilysin, an enzyme that degrades natriuretic peptides.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 4 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            4. Kussmaul&#8217;s sign (paradoxical rise in JVP on inspiration) is classically seen in which condition?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Cardiac tamponade<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Constrictive pericarditis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Tension pneumothorax<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Left ventricular failure<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> It indicates impaired right ventricular filling, classic for constrictive pericarditis, right ventricular infarction, or restrictive cardiomyopathy.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 5 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            5. What is the most common cyanotic congenital heart disease surviving to adulthood?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Transposition of the great arteries<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Tetralogy of Fallot<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Truncus arteriosus<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Tricuspid atresia<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> ToF is the most common cyanotic CHD and with surgical repair, many patients survive well into adulthood.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 6 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            6. Pulsus bisferiens (bifid pulse) is most characteristically associated with which of the following?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Aortic stenosis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Hypertrophic obstructive cardiomyopathy<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Mitral regurgitation<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Coarctation of the aorta<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> It can also be seen in isolated severe AR and mixed AS\/AR, but the classic double systolic peak is a hallmark of HOCM.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 7 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            7. Which valve is most commonly affected in infective endocarditis in intravenous drug users?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Mitral<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Aortic<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Tricuspid<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Pulmonary<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> The tricuspid valve is the first valve encountered by venous blood returning from peripheral injections, making it highly susceptible in IVDUs.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 8 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            8. The &#8216;S1Q3T3&#8217; pattern on an ECG is classically associated with which condition?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Acute myocardial infarction<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Pulmonary Embolism<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Pericardial effusion<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Cor pulmonale<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> This pattern indicates acute right heart strain, classically taught as a sign of pulmonary embolism, though sinus tachycardia is more common.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 9 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            9. Which antihypertensive medication class is absolutely contraindicated in bilateral renal artery stenosis?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Calcium channel blockers<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Beta-blockers<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Thiazide diuretics<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>D) ACE inhibitors<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> ACE inhibitors remove the angiotensin II-mediated efferent arteriolar vasoconstriction, precipitating acute renal failure in bilateral RAS.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 10 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            10. Which cardiac biomarker is considered the first-line choice for diagnosing acute myocardial infarction due to its high sensitivity and specificity?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) CK-MB<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Myoglobin<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Cardiac Troponin I\/T<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) LDH<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Cardiac troponins are the most sensitive and specific markers for myocardial necrosis.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 11 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            11. An early diastolic, high-pitched, blowing murmur heard best at the left sternal border is characteristic of:\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>A) Aortic regurgitation<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Mitral stenosis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Pulmonary stenosis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Tricuspid regurgitation<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> This is the classic description of the murmur of aortic regurgitation.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 12 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            12. What is the fundamental mechanism of action of Aspirin in cardiovascular disease prevention?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Reversible P2Y12 receptor inhibition<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Irreversible COX-1 inhibition<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Glycoprotein IIb\/IIIa antagonism<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Phosphodiesterase inhibition<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Aspirin irreversibly inhibits cyclooxygenase-1 (COX-1), preventing the formation of Thromboxane A2 and thus inhibiting platelet aggregation.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 13 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            13. Beck&#8217;s triad, consisting of hypotension, jugular venous distension, and muffled heart sounds, is indicative of:\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Acute severe mitral regurgitation<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Tension pneumothorax<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Cardiac tamponade<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Acute right ventricular infarction<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Beck&#8217;s triad is the classic clinical presentation of acute cardiac tamponade.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 14 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            14. The typical ECG manifestation of Wolff-Parkinson-White (WPW) syndrome includes a short PR interval and a slurred upstroke of the QRS complex known as a:\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) J wave<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Delta wave<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Epsilon wave<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) U wave<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> The delta wave represents early ventricular depolarization via an accessory pathway (Bundle of Kent).\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 15 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            15. Which cardiomyopathy is primarily characterized by a thickened, non-dilated left ventricle in the absence of another systemic or cardiac disease capable of producing the magnitude of hypertrophy?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Dilated cardiomyopathy<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Restrictive cardiomyopathy<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Hypertrophic cardiomyopathy<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Arrhythmogenic right ventricular cardiomyopathy<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> HCM is a genetic disorder of the cardiac sarcomere characterized by unexplained LV hypertrophy.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 16 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            16. Bisoprolol belongs to which class of medications?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>A) Cardioselective Beta-1 blocker<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Non-selective Beta blocker<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Alpha-1 blocker<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Calcium channel blocker<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Bisoprolol is a highly selective beta-1 adrenergic receptor antagonist.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 17 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            17. A &#8216;machine-like&#8217; continuous murmur heard at the left infraclavicular area is classic for:\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Ventricular septal defect<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Patent Ductus Arteriosus<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Atrial septal defect<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Coarctation of the aorta<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> PDA causes a continuous flow of blood from the aorta to the pulmonary artery throughout the cardiac cycle.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 18 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            18. The most common primary cardiac tumor in adults is:\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Rhabdomyoma<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Fibroma<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Lipoma<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>D) Myxoma<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Atrial myxomas are the most common primary cardiac tumors, predominantly occurring in the left atrium.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 19 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            19. What is the appropriate pharmacological antidote for severe Warfarin toxicity with bleeding?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Protamine sulfate<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Idarucizumab<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Vitamin K and Prothrombin Complex Concentrate (PCC)<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Aminocaproic acid<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Vitamin K reverses warfarin over time, while PCC provides immediate replacement of vitamin K-dependent clotting factors.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 20 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            20. A &#8216;water-hammer&#8217; (Corrigan&#8217;s) pulse, characterized by a rapid upstroke and rapid collapse, is seen in:\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Aortic stenosis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) Aortic regurgitation<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) Mitral stenosis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Mitral regurgitation<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> The widened pulse pressure in aortic regurgitation leads to this bounding, rapidly collapsing pulse.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 21 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            21. In a right-dominant coronary circulation, which artery supplies the AV node?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Left anterior descending artery<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Left circumflex artery<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Right coronary artery<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Obtuse marginal artery<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> In about 80-85% of people (right-dominant), the posterior descending artery and AV nodal branch arise from the RCA.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 22 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            22. Janeway lesions and Osler nodes are classical peripheral stigmata of:\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Rheumatic fever<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Kawasaki disease<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Infective Endocarditis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Syphilitic aortitis<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> These are classic, though increasingly rare, signs of infective endocarditis.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 23 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            23. Which of the following drugs is a mineralocorticoid receptor antagonist used to reduce mortality in heart failure with reduced ejection fraction?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Furosemide<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Hydrochlorothiazide<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Spironolactone<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Torsemide<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Spironolactone and Eplerenone antagonize aldosterone, preventing deleterious cardiac remodeling in HFrEF.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 24 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            24. What is the normal duration of the PR interval on a standard ECG?\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) 0.04 to 0.10 seconds<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>B) 0.12 to 0.20 seconds<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>C) 0.20 to 0.24 seconds<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) 0.35 to 0.45 seconds<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> A normal PR interval is 120-200 ms (3 to 5 small squares). >200 ms defines first-degree AV block.\n            <\/p>\n        <\/div>\n    <\/div>\n\n    <!-- MCQ 25 -->\n    <div class=\"mcq-card bg-white border border-gray-200 rounded-xl shadow-sm p-6 mb-6\">\n        <h3 class=\"text-lg font-bold text-gray-900 mb-4 pb-2 border-b border-gray-100\">\n            25. Epsilon waves, a small positive deflection buried in the end of the QRS complex, are characteristically associated with:\n        <\/h3>\n        <div class=\"options-container space-y-3 mb-5\">\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>A) Brugada syndrome<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>B) Long QT syndrome<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"true\">\n                <span>C) Arrhythmogenic Right Ventricular Dysplasia\/Cardiomyopathy (ARVD\/C)<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n            <button class=\"option-btn w-full text-left p-3 bg-gray-50 border border-gray-200 rounded-lg hover:bg-gray-100 transition-colors flex justify-between items-center cursor-pointer focus:outline-none focus:ring-2 focus:ring-blue-400\" data-correct=\"false\">\n                <span>D) Wellens&#8217; syndrome<\/span>\n                <span class=\"icon-container w-6 h-6 flex-shrink-0\"><\/span>\n            <\/button>\n        <\/div>\n        <div class=\"explanation-container hidden mt-4 p-5 bg-blue-50 border-l-4 border-blue-500 rounded-r-lg shadow-inner\">\n            <p class=\"text-blue-900 text-sm leading-relaxed\">\n                <strong>Explanation:<\/strong> Epsilon waves reflect delayed right ventricular activation and are a major diagnostic criterion for ARVD\/C.\n            <\/p>\n        <\/div>\n    <\/div>\n\n<\/div>\n\n<!-- Vanilla JavaScript for instant validation interactions -->\n<script>\n    document.addEventListener(\"DOMContentLoaded\", function() {\n        const mcqCards = document.querySelectorAll('.mcq-card');\n\n        \/\/ SVG Icons for visual feedback\n        const checkIcon = `<svg class=\"w-6 h-6 text-green-600\" 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=\"2.5\" d=\"M5 13l4 4L19 7\"><\/path><\/svg>`;\n        const crossIcon = `<svg class=\"w-6 h-6 text-red-600\" 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=\"2.5\" d=\"M6 18L18 6M6 6l12 12\"><\/path><\/svg>`;\n\n        mcqCards.forEach(card => {\n            const options = card.querySelectorAll('.option-btn');\n            const explanation = card.querySelector('.explanation-container');\n            let hasAnswered = false; \/\/ State lock for this specific question\n\n            options.forEach(option => {\n                option.addEventListener('click', function() {\n                    \/\/ Prevent multiple clicks on the same question\n                    if (hasAnswered) return;\n                    hasAnswered = true;\n\n                    const isCorrect = this.getAttribute('data-correct') === 'true';\n\n                    \/\/ Process all options to lock them and highlight appropriately\n                    options.forEach(opt => {\n                        const optIsCorrect = opt.getAttribute('data-correct') === 'true';\n                        \n                        \/\/ 1. 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What is the most common cause of functional tricuspid regurgitation? A) Infective endocarditis B) Carcinoid syndrome C) Right ventricular dilation D) Rheumatic heart disease Explanation: Functional TR is usually due to annular dilation from right ventricular enlargement or pulmonary hypertension. 2. 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