New Series of Interactive Cardiology MCQs 25: Echo
⚡ Advanced Cardiology Series – Part 25
Interactive Cardiology MCQs #25
Post-Graduate Level Masterclass: Echocardiography IV
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Q1
When using the Proximal Isovelocity Surface Area (PISA) method to quantify mitral regurgitation, what is the most common consequence of failing to shift the baseline downward to optimize the aliasing velocity (Va)?
Q2
When differentiating Constrictive Pericarditis from Restrictive Cardiomyopathy using hepatic vein pulsed-wave Doppler, which respiratory finding is a hallmark of Constrictive Pericarditis?
Q3
According to ASE guidelines, what Vena Contracta width threshold is considered a highly specific indicator of Severe Aortic Regurgitation?
Q4
During a Dobutamine Stress Echocardiogram, a myocardial segment demonstrates a ‘biphasic response’ (initial improvement in contractility at low doses, followed by worsening wall motion at peak doses). What does this specific finding signify?
Q5
In patients with Hypertrophic Obstructive Cardiomyopathy (HOCM), Systolic Anterior Motion (SAM) of the mitral valve creates left ventricular outflow tract obstruction. This distortion also invariably causes mitral regurgitation. In which direction is this specific MR jet classically directed?
Q6
When evaluating a patient for Cardiac Resynchronization Therapy (CRT), which echocardiographic finding is a classic visual marker of mechanical dyssynchrony caused by a Left Bundle Branch Block (LBBB)?
Q7
An Ostium Primum Atrial Septal Defect (ASD) is located in the lowermost portion of the atrial septum. It is almost universally associated with which specific congenital valvular anomaly?
Q8
When estimating Left Atrial Pressure (LAP) using the E/e prime ratio, what average E/e prime threshold is highly specific for elevated left ventricular filling pressures?
Q9
To diagnose Paradoxical Low-Flow, Low-Gradient Aortic Stenosis (a patient with severe AS criteria but a low gradient despite a NORMAL ejection fraction), what must the Stroke Volume Index (SVI) be?
Q10
In a patient with severe Mitral Stenosis who also has severe Aortic Regurgitation, which echocardiographic method for calculating Mitral Valve Area (MVA) becomes inaccurate and should be avoided?
Q11
During a TEE to evaluate the Left Atrial Appendage (LAA) prior to cardioversion, you measure the LAA emptying velocity using pulsed-wave Doppler. What peak emptying velocity suggests robust function and a low risk of thrombus formation?
Q12
To accurately calculate the Right Ventricular Systolic Pressure (RVSP) using the VSD gradient method in a patient with a Ventricular Septal Defect, which formula must be applied?
Q13
Radiation-Induced Heart Disease (RIHD) typically manifests years after thoracic radiation therapy. On echocardiography, what is the classic pattern of valvular calcification observed in RIHD?
Q14
An echocardiogram reveals unexplained concentric left ventricular hypertrophy. A prominent, highly echogenic (bright) endocardial border alongside severely thickened papillary muscles is noted. This specific morphological pattern, sometimes called the ‘Binary Sign’, should raise high clinical suspicion for which storage disease?
Q15
When assessing the severity of Pulmonic Stenosis (PS) using Continuous Wave (CW) Doppler, what peak pressure gradient definitively classifies the stenosis as Severe?
Q16
During an echocardiogram for a patient with Pulmonary Hypertension, the pulsed-wave Doppler signal sampled in the Right Ventricular Outflow Tract (RVOT) displays a ‘Flying W’ sign. What physiological event causes this mid-systolic notch?
Q17
To calculate Patient-Prosthesis Mismatch (PPM) for a prosthetic aortic valve, one must calculate the Effective Orifice Area Index (EOAi). According to guidelines, Severe PPM is defined when the EOAi falls below what threshold?
Q18
When administering an echocardiographic contrast agent (e.g., perflutren lipid microspheres) to enhance endocardial border definition, which ultrasound machine setting must specifically be lowered to prevent the premature destruction of the contrast microbubbles?
Q19
In speckle-tracking strain imaging, ‘Mechanical Dispersion’ is calculated as the standard deviation of time to peak negative strain across all 17 LV segments. What major clinical risk is strongly associated with an increased mechanical dispersion index?
Q20
You identify a flail anterior mitral leaflet causing severe eccentric mitral regurgitation. To accurately measure the Proximal Isovelocity Surface Area (PISA) radius for EROA calculation, in which specific phase of the cardiac cycle should the frame be frozen?
Q21
During a routine echo, you note a continuous, high-velocity jet flowing in the main pulmonary artery throughout both systole and diastole. The patient is an asymptomatic young adult. This finding is the classic hallmark of which congenital anomaly?
Q22
You are assessing diastolic function. The Mitral inflow E/A ratio is 2.5, and the deceleration time is 120 ms. The septal e prime velocity is 5 cm/s. This pattern (Grade III Diastolic Dysfunction) is known as ‘Restrictive Filling’. Is it possible to distinguish this from true Restrictive Cardiomyopathy based purely on these inflow numbers?
Q23
An echocardiogram is performed on a patient 5 days post-anterior Myocardial Infarction who presents with sudden cardiogenic shock and a harsh holosystolic murmur. Echo shows a high-velocity color Doppler jet traversing the ventricular septum from left to right. To properly calculate the Qp/Qs shunt ratio, which two stroke volumes must you calculate?
Q24
When assessing the Right Ventricle, the Fractional Area Change (FAC) is a recommended 2D quantitative method. Which two measurements are required to calculate the RV FAC?
Q25
During a Transesophageal Echocardiogram (TEE) to assess for an Aortic Dissection, you visualize an intimal flap in the descending thoracic aorta. To confidently differentiate a true intimal flap from a reverberation artifact, what specific behavior should the flap exhibit?
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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