ECHO 2013 / Echocardiography for Assessment of Prosthetic Heart Valves

A B

When there is an obstruction of a flow channel, an increase in velocities proximal to the obstruction (level B) will be observed. If as in the LVOT, the flow proximal to the obstruction is accelerated, the velocity profile at level A

is flattened. Velocities representing the spatial mean velocity should therefore be recorded at this level.

Skjaerpe T: Circulation 72(4), 10/85

CP1198201-1

Correct PW SV Position

Incorrect PW SV Position

Before Issuing Final Report

•Use LVOT diameter and TVI measurements to calculate the stroke volume index, and check this against LV size and EF

•Normal stroke volume index = 32-58 cc/m2