FE Imaging Techniques & Protocols 4

Question 1

During a fetal echocardiogram, the aortic isthmus is best evaluated in which view?

Accepted Answer

Aortic arch long-axis (sagittal) view

Answer

The aortic arch long-axis sagittal view displays the entire aortic arch including the isthmus between the left subclavian artery and the ductus arteriosus insertion.

Question 2

In fetal echocardiography, the ductus venosus waveform is normally characterized by:

Accepted Answer

Triphasic flow with S, D, and a-wave, all in forward direction

Answer

Normal ductus venosus flow is triphasic with forward S-wave (ventricular systole), D-wave (diastole), and a-wave (atrial contraction), all directed forward.

Question 3

Which parameter derived from pulsed-wave Doppler at the mitral valve is most reflective of fetal left ventricular diastolic function?

Accepted Answer

E/A ratio

Answer

The E/A ratio (early filling to atrial filling velocity ratio) at the mitral valve is the primary Doppler index used to assess fetal diastolic function.

Question 4

What is the role of the 'sweep technique' in performing a complete fetal echocardiogram?

Accepted Answer

It systematically tilts the transducer from the abdominal situs through the cardiac views to the great vessels

Answer

The sweep technique involves a systematic sequential tilt from the upper abdomen through cardiac planes to the mediastinal vessels, ensuring no view is omitted.

Question 5

Which color Doppler finding in the four-chamber view is the most sensitive indicator of an atrioventricular septal defect (AVSD)?

Accepted Answer

A single common color flow jet filling both ventricles from a common AV valve

Answer

A single central color jet entering both ventricles through a common AV valve orifice is the hallmark color Doppler finding of AVSD.

(FE) Fetal Echocardiography Certification Practice Test

(FE) Fetal Echocardiography Certification Practice Test

FE Imaging Techniques & Protocols 4