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The Abbott HeartMate 3™ Left Ventricular Assist System 

The Abbott HeartMate 3™ Left Ventricular Assist System
The Abbott HeartMate 3™ Left Ventricular Assist System

Kevin Bourque

and John B. O’Connell

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date: 18 January 2021

Mechanical circulatory support devices are increasingly used to treat chronic, advanced heart failure. In the Abbott HeartMate 3™ left ventricular assist system (HM3), a new magnetic levitation pump improves hemocompatibility and thus addresses the prominent morbidities associated with these devices, such as pump thrombosis, stroke, and bleeding. In the multicenter MOMENTUM 3 clinical trial of 366 patients, the primary endpoint—survival without disabling stroke or pump replacement—was 77.9% in the HM3 group (n = 190) and 56.4% in the HeartMate II™ Left Ventricular Assist System group (HMII; n = 176; P <0.001). Suspected or confirmed pump thrombosis occurred in two patients (1.1%) in the HM3 group and in 27 patients (15.7%) in the HMII group (P <0.001). Also at 2 years, 22 strokes occurred in 19 patients (10.1%) with the HM3 and 43 strokes occurred in 33 patients (19.2%) with the HMII (P = 0.02), indicating that the HM3 provides important improvements in care.

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