• Catheter Cardiovasc Interv · Apr 2021

    Safety and efficacy of mechanical circulatory support with Impella or intra-aortic balloon pump for high-risk percutaneous coronary intervention and/or cardiogenic shock: Insights from a network meta-analysis of randomized trials.

    • Toshiki Kuno, Hisato Takagi, Tomo Ando, Masaki Kodaira, Yohei Numasawa, John Fox, and Sripal Bangalore.
    • Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, New York, New York.
    • Catheter Cardiovasc Interv. 2021 Apr 1; 97 (5): E636-E645.

    BackgroundMechanical circulatory support (MCS) with Impella or intra-aortic balloon pump (IABP) is used for high-risk percutaneous coronary intervention (PCI) and/or for cardiogenic shock (CS) due to acute myocardial infarction. We aimed to investigate the efficacy and safety of Impella or IABP when compared with no MCS using a network meta-analysis of randomized controlled trials (RCTs).MethodsEMBASE and MEDLINE were searched through February 2020 for RCT evaluating efficacy of Impella vs. IABP vs. no MCS in patients undergoing high-risk PCI or CS. The primary efficacy outcome was 30 day or in-hospital all-cause mortality whereas the primary safety outcomes were major bleeding and vascular complications.ResultsOur search identified nine RCTs enrolling a total of 1,996 patients with high-risk PCI and/or CS. There was no significant difference with Impella or IABP on all-cause mortality when compared with no MCS (Impella vs. no MCS; OR:0.82 [0.35-1.90], p = .65, IABP vs. no MCS; OR:0.77 [0.47-1.28], p = .31, I2 = 18.1%). Impella significantly increased major bleeding compared with no MCS (Impella vs. no MCS; OR:7.01 [1.11-44.4], p = .038, I2 = 19.2%). IABP did not increase the risk of major bleeding compared with no MCS (OR:1.27 [0.75-2.16], p = .38, I2 = 19.2%) but increased vascular complication compared with no MCS (OR:1.92 [1.01-3.64], p = .045, I2 = 1.5%).ConclusionsNeither Impella nor IABP decreased all-cause short-term mortality when compared with no MCS for high-risk PCI and/or CS. Moreover, Impella increased major bleeding compared with no MCS.© 2021 Wiley Periodicals LLC.

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