CET CET Hemodynamic Assessment & Measurements 2

Question 1

Which Doppler measurement is used to assess right ventricular dP/dt?

Accepted Answer

Rate of rise of the tricuspid regurgitation CW Doppler signal between 1 and 3 m/s

Answer

RV dP/dt is estimated from the TR CW Doppler signal by measuring the time for TR velocity to rise from 1 to 3 m/s, analogous to the LV dP/dt method using MR.

Question 2

What does a TAPSE (tricuspid annular plane systolic excursion) value of <17mm indicate?

Accepted Answer

Mildly reduced right ventricular systolic function

Answer

TAPSE <17mm indicates abnormal (reduced) right ventricular systolic function per ASE guidelines, with values 10–16mm suggesting moderate dysfunction.

Question 3

The inferior vena cava (IVC) diameter and its respiratory variation are used to estimate which hemodynamic parameter?

Accepted Answer

Right atrial pressure

Answer

IVC diameter and collapsibility index are used to estimate mean right atrial pressure; a dilated IVC (>2.1cm) with <50% collapse suggests RAP ≥10–15 mmHg.

Question 4

Which Doppler parameter is used to assess left ventricular relaxation in diastolic dysfunction grading?

Accepted Answer

Septal and lateral mitral annular e' velocities

Answer

Mitral annular e' velocities (septal <7 cm/s, lateral <10 cm/s) measured by tissue Doppler imaging reflect myocardial relaxation and are central to diastolic dysfunction grading.

Question 5

What is the significance of a mitral valve deceleration time (DT) of less than 150ms?

Accepted Answer

Restrictive filling pattern suggesting elevated LV filling pressures

Answer

A mitral deceleration time <150ms indicates a restrictive filling pattern (grade III diastolic dysfunction) associated with markedly elevated LV filling pressures.

(CET) Certified Echocardiography Technician Practice Test

(CET) Certified Echocardiography Technician Practice Test

CET CET Hemodynamic Assessment & Measurements 2