Echocardiogram Network Fundamentals 3

Question 1

Which echocardiographic view best demonstrates the cardiac apex and is critical for detecting apical wall motion abnormalities?

Accepted Answer

Apical four-chamber view

Answer

The apical four-chamber view places the ultrasound beam parallel to the left ventricular long axis, optimally visualizing apical segments.

Question 2

In atrial fibrillation, which Doppler finding is characteristically absent on transmitral flow?

Accepted Answer

A-wave

Answer

Atrial fibrillation eliminates organized atrial contraction, causing absence of the A-wave on transmitral Doppler.

Question 3

Wolff-Parkinson-White (WPW) syndrome involves an accessory conduction pathway. Which echocardiographic finding may be associated?

Accepted Answer

Ebstein's anomaly of the tricuspid valve

Answer

WPW is associated with Ebstein's anomaly, where right-sided accessory pathways are common alongside the tricuspid valve malformation.

Question 4

During a complete heart block, what would be expected on a cardiac echo examination?

Accepted Answer

Independent atrial and ventricular contractions at different rates

Answer

In complete heart block, atria and ventricles beat independently because no impulses cross the AV node, visible as dissociated contractions on echo.

Question 5

Cardiac resynchronization therapy (CRT) is assessed by echocardiography primarily by evaluating which parameter?

Accepted Answer

Interventricular and intraventricular dyssynchrony

Answer

CRT targets mechanical dyssynchrony; echo measures interventricular and intraventricular dyssynchrony to assess response to biventricular pacing.

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