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

Authors :: Iacovoni, A
Vittori, C
Fontana, A
Carobbio, A
Fino, C
D'Elia, E
Terzi, A
Senni, M
Iacovoni A
Vittori C
Fontana A
Carobbio A
Fino C
D'Elia E
Terzi A
Senni M
Iacovoni, A
Vittori, C
Fontana, A
Carobbio, A
Fino, C
D'Elia, E
Terzi, A
Senni, M
Iacovoni A
Vittori C
Fontana A
Carobbio A
Fino C
D'Elia E
Terzi A
Senni M
Publication Year :: 2017
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 results showed that in patients with normal pump function, the Doppler velocity S/D ratio gradually decreased during LVAD speed increases. This test is easily performed and seems promising to detect normal pump function in patients assisted by a centrifugal flow LVAD.

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