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OBJECTIVES Limited data are available for use of the HeartMate 3 (HM 3) left ventricular assist device in patients with a small body surface area (BSA). Because the HM 3 is currently the sole device available worldwide, we conducted a single-centre retrospective study of patients with a small BSA (&amp;lt;1.5 m2) who underwent HM 3 implantation to better understand the operative and postoperative management. METHODS This study enrolled 64 consecutive patients who had undergone HM 3 implantation from August 2018 to July 2021. The patients were divided into 2 groups based on their BSA before the operation: BSA of &amp;lt;1.5 m2 (small BSA group, n = 18) and BSA of ≥1.5 m2 (regular BSA group, n = 46). The primary study endpoint was survival free of events such as disabling stroke and pump failure. The secondary endpoint was the frequency of adverse events. RESULTS The average BSA was 1.38 m2 in the small BSA group. The overall event-free survival rate at 12 months was 100% and 86.7% in the small BSA group and regular BSA group, respectively, and no significant difference was found between the 2 groups (log-rank P = 0.2). The number of cumulative adverse events of death, stroke of any severity, driveline infection, pump infection, ventricular arrhythmia, gastrointestinal Haemorrhage and pump failure was similar between the 2 groups. CONCLUSIONS The HM 3 was safely implanted in patients with a small BSA, and postoperative outcomes were acceptable regardless of BSA. However, further research is needed to confirm the indications for HM 3 implantation in even smaller patients.

Impact of the HeartMate 3 continuous-flow left ventricular assist device in patients with small body size