Estimation of the Severity of Aortic Insufficiency by HVAD Flow Waveform.

ABSTRACT:

Purpose

Aortic insufficiency (AI) significantly affects morbidity and mortality in patients with left ventricular assist devices. Although AI may be commonly assessed by echocardiography, expert techniques are required for accurate quantification of AI severity.

Description

In this prospective blinded study, screenshots from the HVAD (Medtronic, Framingham, MA) display and simultaneous echocardiographic measurements were obtained. Each screenshot was digitized and the early diastolic phase slope was calculated, with blinding to the echocardiographic results. The regurgitant fraction of AI was quantified by Doppler echocardiography of the outflow graft.

Evaluation

A total of 30 patients (median, 57 years old; 57% male) were enrolled. A cutoff of -17.6 L/min/s for the e

SUBMITTER: Imamura T 

PROVIDER: S-EPMC7347086 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature