Effect of Mechanical Circulatory Support on Mortality After Transcatheter Aortic Valve Replacement: An Analysis

Overview

Journal ASAIO J

Specialty General Surgery

Date 2024 Sep 24

PMID 39316612

Authors

Chen Yang

Yang Liu

Yu Mao

Xiaoke Shang

Fan Qiao

Jian Liu

Yenong Zhou

Mengen Zhai

Shiqiang Yu

Tao Chen

Jian Yang

Zhenxiao Jin

Affiliations

Soon will be listed here.

Abstract

A proportion of patients still need mechanical circulatory support (MCS) during the transcatheter aortic valve replacement (TAVR) because of intraoperative hemodynamic instability. However, the outcomes of patients with different MCS type during TAVR are still controversial. A total of 538 patients who underwent TAVR procedure in four centers were included. The time-related outcomes and their predictors of patients who did not have MCS (MCS-, n = 498) were compared with those who underwent emergency MCS (eMCS+, n = 18) and prophylactic MCS (pMCS+, n = 22). We evaluated the association between different MCS groups and all-cause mortality using conditional landmark analysis with Cox regression. There was a significant increase in 30-day mortality in the eMCS+ group ( plog-rank < 0.001) and no significant difference in 31-day to 1-year mortality among the groups ( plog-rank = 0.789). A significant improvement in the left ventricular ejection fraction was observed in the pMCS+ group at 1 year after TAVR. Emergency MCS was independently associated with 30-day mortality, as well as 1-year mortality. Prophylactic MCS showed good clinical outcomes and might be considered for high-risk patients. Further studies are needed to investigate the predictors that lead to MCS usage and long-term mortality in TAVR patients with MCS.

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