Echocardiographic outflow pump ramp test in centrifugal-flow left ventricular assist device.

Abstract

This study sought to develop a novel echocardiogram outflow ramp test to detect device malfunctions in centrifugal-flow left ventricular assist devices (LVADs). This new ramp pump test is based on the direct analyses of systolic and diastolic ratio (S/D) Doppler velocity in the outflow cannula in the HeartWare LVAD during progressive increases in speed. The… (More)
DOI: 10.5301/ijao.5000573

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