Pre-operative risk factors of bleeding and stroke during left ventricular assist device support: an analysis of more than 900 HeartMate II outpatients

Journal of the American College of Cardiology
Andrew J BoyleHeartMate II Clinical Investigators

Abstract

This study sought to determine the pre-operative risk factors related to late bleeding, stroke, and pump thrombosis in patients with HeartMate II (HMII) left ventricular assist devices (LVADs) (Thoratec Corporation, Pleasanton, California) that might influence tailored improvements in patient management. Adverse events in LVAD patients remain high. It is unclear whether pre-operative characteristics influence the likelihood of the development of post-operative hemorrhagic or thrombotic complications. Knowing which patients are at greater risk might assist in tailoring anticoagulation therapy for certain patients. Advanced heart failure patients (n = 956) discharged from the hospital after LVAD implantation in the HMII bridge to transplantation (n = 405) and destination therapy (n = 551) clinical trials were retrospectively evaluated. Bleeding requiring surgery or transfusion of >2 U of packed red blood cells, stroke (hemorrhagic and ischemic), and pump thrombosis were tracked from hospital discharge until patient outcome. Adverse event rates for post-discharge bleeding (0.67 events/patient-year) were higher than those for hemorrhagic stroke (0.05), ischemic stroke (0.04), and pump thrombosis (0.03). The main sites of bleeding i...Continue Reading

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