New Series of Interactive Cardiology MCQs 19
🧬 Advanced Cardiology Series – Part 19
Interactive Cardiology MCQs #19
Post-Graduate Level Clinical, Imaging, EP & Structural Masterclass
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Q1
In patients with Atrial Fibrillation undergoing Percutaneous Coronary Intervention (PCI) for an Acute Coronary Syndrome (ACS), the AUGUSTUS trial provided critical guidance on antithrombotic regimens. What was its primary finding regarding the safety of omitting aspirin?
Q2
Patients supported with continuous-flow Left Ventricular Assist Devices (cf-LVADs) frequently develop severe gastrointestinal bleeding. What unique acquired hematological disorder is the primary driver of this complication?
Q3
During Tissue Doppler Imaging (TDI) of the mitral annulus to evaluate a patient for Constrictive Pericarditis versus Restrictive Cardiomyopathy, the sonographer notes “Annulus Reversus.” What exactly does this sign describe?
Q4
A patient with known Congenitally Corrected Transposition of the Great Arteries (L-TGA) presents with progressive heart failure symptoms at age 40. Without any other structural interventions, what is the natural history and primary mechanism of heart failure in this condition?
Q5
Ivabradine is used to reduce heart rate and improve outcomes in patients with HFrEF (LVEF <= 35%) who remain symptomatic despite maximally tolerated beta-blockers. In which of the following baseline rhythms is Ivabradine strictly CONTRAINDICATED because it will have zero efficacy?
Q6
During a right and left heart catheterization to investigate severe dyspnea, the operator notes complete equalization of diastolic pressures in the Right Atrium, Right Ventricle, Left Atrium (PCWP), and Left Ventricle. What does this hemodynamic finding strongly indicate?
Q7
A patient with stable angina undergoes coronary angiography and physiological testing of an intermediate LAD lesion. The Instantaneous Wave-free Ratio (iFR) is measured. What is the validated cut-off value below which the lesion is considered hemodynamically significant?
Q8
In patients with multi-vessel coronary artery disease presenting with a STEMI, the COMPLETE trial addressed the strategy of revascularizing non-culprit lesions. What did the trial demonstrate regarding complete revascularization versus culprit-lesion-only PCI?
Q9
The presence of prominent “U waves” on an electrocardiogram, particularly in the mid-precordial leads (V2-V4), combined with ST-segment depression and flattened T waves, is the classic electrocardiographic hallmark of which electrolyte abnormality?
Q10
In suspected Cardiac Amyloidosis, a Technetium-99m Pyrophosphate (Tc-99m PYP) scan is performed. A Grade 3 uptake (radiotracer uptake in the myocardium greater than in the ribs) is highly sensitive and specific for which exact subtype of amyloidosis?
Q11
A patient with a history of colon cancer presents with severe, rest chest pain immediately following their chemotherapy infusion. The ECG shows transient ST elevations that resolve with nitroglycerin. Which chemotherapeutic agent is notoriously responsible for profound coronary vasospasm?
Q12
During auscultation of a patient with severe, chronic Aortic Regurgitation (AR), a low-pitched, mid-to-late diastolic rumble is heard at the cardiac apex. What is the eponym for this specific murmur, and what is its mechanism?
Q13
A patient presenting with hypertensive emergency is found to have a Pheochromocytoma. When initiating medical therapy to lower the blood pressure prior to surgical resection, what is the mandatory pharmacological sequence?
Q14
Adenosine is the first-line drug used to terminate regular narrow-complex tachycardias like AVNRT. What is its specific mechanism of action at the cellular level in the AV node?
Q15
In a patient diagnosed with an Atrial Septal Defect (ASD), right heart catheterization is performed to calculate the Qp:Qs ratio (Pulmonary to Systemic flow ratio). What Qp:Qs cutoff is generally accepted as the threshold indicating a hemodynamically significant shunt warranting closure?
Q16
A patient with a classic Wolff-Parkinson-White (WPW) ECG pattern is being evaluated for catheter ablation. Lead V1 shows a distinctly POSITIVE delta wave and a tall R wave (R/S ratio > 1). This specific morphology indicates the accessory pathway is located where?
Q17
In the cardiac catheterization lab, the Fick Principle is used to calculate Cardiac Output. The formula requires the patient’s Oxygen Consumption (VO2) and the Arterio-Venous Oxygen difference. Which specific site must the venous blood gas be drawn from to accurately represent true mixed venous oxygen saturation?
Q18
A post-menopausal woman presents with chest pain and ST elevations mimicking an anterior STEMI following sudden emotional distress. Angiography reveals clean coronaries, but the LV gram shows apical ballooning. What is the proposed pathophysiologic mechanism of Takotsubo Cardiomyopathy?
Q19
According to the Jones Criteria for the diagnosis of Acute Rheumatic Fever, which of the following is considered a MAJOR clinical manifestation?
Q20
A patient with beta-thalassemia major requires frequent blood transfusions and develops secondary heart failure. Cardiac MRI is ordered to quantify myocardial iron overload. Which specific MRI parameter is the gold standard for measuring tissue iron?
Q21
A patient with a single-chamber ventricular pacemaker (VVI mode) complains of fatigue, dizziness, and a throbbing sensation in their neck (Cannon A waves) during pacemaker firing. What is the diagnosis and mechanism?
Q22
In patients receiving Cardiac Resynchronization Therapy (CRT) for HFrEF, predicting who will be a “non-responder” is clinically important. Which baseline characteristic is the strongest predictor of a POOR response to CRT?
Q23
During an electrophysiology study for Typical AVNRT, mapping of the circuit reveals it uses two pathways. In “Typical” (Slow-Fast) AVNRT, what are the antegrade and retrograde pathways, respectively?
Q24
A patient with Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) has an ICD placed due to recurrent VT. What is the classic histopathologic finding in the right ventricle of patients with this disease?
Q25
During an echocardiogram for Mitral Stenosis, the severity is evaluated using Pressure Half-Time (PHT). However, PHT becomes inaccurate (underestimating severity) under which of the following concomitant hemodynamic conditions?
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About The Author
Johnson Francis
Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal