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  • Title: Prognostic significance of intra-aortic balloon pumping support in patients with acute myocardial infarction and veno-arterial extracorporeal membrane oxygenation therapy.
    Author: Kida H, Sotomi Y, Hikoso S, Nakatani D, Mizuno H, Suna S, Okada K, Kitamura T, Komukai S, Dohi T, Kojima T, Oeun B, Sunaga A, Sato T, Sakata Y, Sato H, Hori M, Komuro I, Sakata Y, Osaka Acute Coronary Insufficiency Study (OACIS) Investigators.
    Journal: J Cardiol; 2022 Feb; 79(2):179-185. PubMed ID: 34750027.
    Abstract:
    BACKGROUND: The prognostic significance of combining intra-aortic balloon pumping (IABP) with extracorporeal membrane oxygenation (ECMO) for acute myocardial infarction (AMI) patients is still unclear. We investigated whether combining IABP with veno-arterial (VA)-ECMO is associated with a lower risk of short-term mortality. METHODS: Among 12,093 AMI cases enrolled in the Osaka Acute Coronary Insufficiency Study (OACIS), we identified 519 who were administered VA-ECMO during hospitalization. Among these, 459 received IABP support (IABP group) and 60 cases did not (no-IABP group). The primary endpoint was 30-day all-cause death; the secondary endpoint was major bleeding. Logistic regression analysis using original data was conducted. We also established weighted logistic regression models with inverse probability of treatment weighting (IPTW). RESULTS: Logistic regression analysis revealed that IABP use was significantly associated with a reduced risk of 30-day death in the original data [odds ratio (OR) 0.504, 95% confidence interval (CI) 0.282-0.901, p = 0.021]. After IPTW-adjustment for clinically relevant covariates with the use of IABP, patients receiving VA-ECMO with IABP had a lower risk of 30-day death (OR 0.816, 95% CI 0.746-0.892, p < 0.001) compared to those without IABP. The incidence of major bleeding was comparable between the groups (IABP 29.0% vs. non-IABP 21.7%, p=0.302). However, the risk of major bleeding was higher in the IABP group after IPTW-adjustment (OR 1.092, 95% CI 1.008-1.184, p=0.032). CONCLUSIONS: IABP support for AMI patients with VA-ECMO was significantly associated with reduced risk of short-term mortality, suggesting that the addition of IABP support might contribute to improved survival in AMI patients requiring VA-ECMO.
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