ARDMS Echo Cardiac Hemodynamics 2

Question 1

What is the normal range for left ventricular ejection fraction (LVEF) by echocardiography?

Accepted Answer

55–70%

Answer

Normal LVEF is generally accepted as 55–70% by biplane Simpson's method in current guidelines.

Question 2

Which index is most commonly used to assess LV diastolic function grade when E/A ratio is 0.8–2.0 and E/e' is borderline?

Accepted Answer

Pulmonary vein systolic/diastolic ratio and TR velocity

Answer

When E/A is borderline (0.8–2.0) and E/e' is indeterminate, guidelines recommend using TR velocity and pulmonary vein flow ratio to determine diastolic grade.

Question 3

What does the TAPSE measurement reflect in echocardiography?

Accepted Answer

Right ventricular systolic function

Answer

TAPSE (tricuspid annular plane systolic excursion) measures the longitudinal displacement of the tricuspid annulus and reflects RV systolic function.

Question 4

Which hemodynamic parameter is estimated from the diastolic deceleration time of the pulmonary regurgitation jet?

Accepted Answer

Pulmonary artery diastolic pressure

Answer

Applying the Bernoulli equation to the end-diastolic pulmonary regurgitation velocity estimates pulmonary artery diastolic pressure.

Question 5

What does an LV dP/dt less than 1200 mmHg/s indicate in echocardiography?

Accepted Answer

Reduced LV systolic function

Answer

LV dP/dt <1200 mmHg/s measured from the mitral regurgitation jet suggests impaired LV systolic contractility.

ARDMS Echo - American Registry for Diagnostic Medical Sonography Echocardiography Practice Test

ARDMS Echo - American Registry for Diagnostic Medical Sonography Echocardiography Practice Test

ARDMS Echo Cardiac Hemodynamics 2