CVT Echocardiography Techniques 5

Question 1

In three-dimensional echocardiography, which parameter for mitral valve assessment is uniquely provided compared to 2D imaging?

Accepted Answer

True anatomic mitral valve area by planimetry without geometric assumptions

Answer

3D echo allows direct planimetry of the mitral orifice in the exact plane of the valve without relying on geometric assumptions required by 2D methods.

Question 2

Which Doppler-derived index estimates right atrial pressure when combined with inferior vena cava size and collapsibility?

Accepted Answer

IVC diameter and respiratory collapse percentage

Answer

ASE guidelines use IVC diameter (≥2.1 cm) and collapsibility (<50% with sniff) to estimate right atrial pressure of 15 mmHg versus ≤5 mmHg.

Question 3

A patient with hypertrophic obstructive cardiomyopathy (HOCM) will most likely show which color Doppler finding in the left ventricular outflow tract?

Accepted Answer

Mosaic turbulent flow beginning in mid-systole due to dynamic obstruction

Answer

Dynamic LVOT obstruction in HOCM produces turbulent mosaic color flow that begins in mid-systole when the hypertrophied septum and systolic anterior motion of the mitral valve narrow the outflow tract.

Question 4

Which imaging plane in parasternal short-axis view allows measurement of the aortic valve area by direct planimetry?

Accepted Answer

Aortic valve level

Answer

Planimetry of the aortic valve orifice is performed in the parasternal short-axis view at the level of the aortic valve leaflets.

Question 5

What does a deceleration time (DT) of less than 150 ms on mitral inflow Doppler indicate in the clinical context of diastolic dysfunction?

Accepted Answer

Restrictive filling pattern with elevated filling pressures

Answer

A shortened deceleration time < 150 ms reflects rapid equalization of LA-LV pressures, characteristic of a restrictive filling pattern indicating severely elevated filling pressures.

(CVT) Cardiovascular Technologist Certification Practice Test

(CVT) Cardiovascular Technologist Certification Practice Test

CVT Echocardiography Techniques 5