Which invasive intracoronary imaging modality provides the highest spatial resolution (10-20 micrometers) and is considered the gold standard for identifying thin-cap fibroatheromas, macrophage accumulation, and assessing stent strut endothelialization?
Q2
In cardio-oncology, which echocardiographic parameter is the most sensitive early predictor of anthracycline-induced cardiotoxicity prior to a decline in left ventricular ejection fraction (LVEF)?
Q3
According to current guidelines, what is the primary indication for percutaneous left atrial appendage (LAA) closure (e.g., Watchman device) in a patient with atrial fibrillation?
Q4
Which of the following is a classic and severe late complication of the Fontan palliation for single-ventricle congenital heart disease, characterized by chronic severe diarrhea, hypoproteinemia, and immunodeficiency?
Q5
What is the exact pharmacological mechanism of action of the novel lipid-lowering agent inclisiran?
Q6
Which of the following clinical scenarios represents an absolute contraindication to the implantation of a subcutaneous implantable cardioverter-defibrillator (S-ICD)?
Q7
A patient has an LVEF of 30%, aortic valve area of 0.8 cm², and a mean gradient of 25 mmHg. Which diagnostic test is most appropriate to differentiate true severe low-flow, low-gradient aortic stenosis from pseudosevere aortic stenosis?
Q8
According to the Fourth Universal Definition of Myocardial Infarction, which of the following is a mandatory criterion for the diagnosis of MINOCA (Myocardial Infarction with Non-Obstructive Coronary Arteries)?
Q9
Based on the results of the LoDoCo2 and COLCOT trials, low-dose colchicine has been integrated into guidelines for which specific indication?
Q10
A 35-year-old male with a history of unexplained syncope has a non-diagnostic baseline ECG. Which pharmacological agent is administered during a provocation challenge to unmask the Type 1 ECG pattern of Brugada syndrome?
Q11
In hypertrophic obstructive cardiomyopathy (HOCM), systolic anterior motion (SAM) of the mitral valve leads to dynamic left ventricular outflow tract (LVOT) obstruction. What is the primary hemodynamic consequence of SAM on the mitral valve itself?
Q12
An adult patient presents with upper extremity hypertension and diminished femoral pulses. A chest radiograph reveals bilateral inferior rib notching. What is the diagnosis and the cause of the radiographic finding?
Q13
When differentiating constrictive pericarditis from restrictive cardiomyopathy via tissue Doppler echocardiography, which specific finding strongly favors constrictive pericarditis?
Q14
A nuclear technetium-99m pyrophosphate (Tc-99m PYP) scintigraphy scan demonstrates intense myocardial tracer uptake (Grade 3, greater than bone uptake). In the absence of a monoclonal protein, this finding is highly specific for which condition?
Q15
What is a primary guideline indication for the implantation of a single-chamber percutaneous leadless pacemaker (e.g., Micra) over a traditional transvenous pacemaker?
Q16
In contemporary physiological lesion assessment, how does the instantaneous wave-free ratio (iFR) differ methodologically from Fractional Flow Reserve (FFR)?
Q17
What is the standard cornerstone maintenance immunosuppression regimen prescribed immediately following orthotopic heart transplantation?
Q18
According to the World Health Organization (WHO) maternal cardiovascular risk classification, pregnancy is absolutely contraindicated (Class IV risk) in women with which condition?
Q19
What is the novel mechanism of action of sotatercept, a recently approved disease-modifying therapy for Pulmonary Arterial Hypertension (PAH)?
Q20
In a patient with non-ischemic dilated cardiomyopathy presenting with recurrent, highly symptomatic, monomorphic bundle branch reentrant ventricular tachycardia (BBR-VT), what is the definitive curative electrophysiological intervention?
Q21
Five days after an acute inferior ST-elevation myocardial infarction, a patient abruptly develops cardiogenic shock and a loud, new holosystolic murmur. Echocardiography confirms acute severe mitral regurgitation. Which anatomical structure is most likely ruptured, and what is its primary blood supply?
Q22
What is the primary clinical advantage of utilizing CT-derived fractional flow reserve (CT-FFR) compared to standard coronary computed tomography angiography (CCTA)?
Q23
Which arrhythmia syndrome is most heavily associated with the congenital presentation of Ebstein anomaly of the tricuspid valve?
Q24
According to the latest USPSTF and ACC/AHA guidelines, what is the recommendation regarding the routine initiation of low-dose aspirin for the *primary* prevention of cardiovascular disease in adults aged 60 years or older?
Q25
During transradial coronary angiography, a patient experiences severe forearm pain and the catheter becomes firmly stuck. Angiography via the sheath reveals profound diffuse narrowing of the radial artery around the catheter. What is the immediate first-line pharmacological treatment for this complication?
