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  • Title: Long-term clinical results of acute myocardial infarction at the left main trunk requiring percutaneous cardiopulmonary support.
    Author: Yamauchi T, Masai T, Fujii K, Sawa Y, Shirai S, Kamigaki M, Itou N, Osaka Cardiovascular Surgery Research Group (OSCAR).
    Journal: J Artif Organs; 2017 Dec; 20(4):303-310. PubMed ID: 28887708.
    Abstract:
    The clinical results of patients with acute myocardial infarction (AMI) at the left main trunk (LMT) remain unclear, especially in cases requiring percutaneous cardiopulmonary support (PCPS). Twenty seven cases of AMI at the LMT requiring emergent PCPS were retrospectively investigated. These 27 patients were aged 44-83 years (65.6 ± 8.6 years) and 20 (81.5%) were men. Peak creatine kinase (CK) leakage ranged from 538 to 34,010 IU/l (13,553 ± 7656 IU/l). Eight (29.6%) patients were discharged without mechanical support. Ten (37.0%) patients underwent left ventricular assist device (LVAD) implantation, five of whom with preoperative organ failure could not survive more than 6 months after implantation. The other nine (33.3%) patients died of low output syndrome or brain damage. The overall survival rates were 53.7, 41.3, 33.0, and 28.3% at 3 months, 6 months, 1 year, and 2 years, respectively. Multivariate analysis showed that Killip class 3/4 at hospital arrival was an independent risk factor for hospital mortality (odds ratio 20.4). Patients with more than 5 days of PCPS support period (n = 6), ≥ 4 h to revascularization (n = 6) or maximum CK leakage ≥20,000 IU/dl (n = 3) were not associated with successful PCPS or IABP weaning. The long-term clinical outcomes of patients with LMT disease requiring PCPS is devastating. Rapid cardiopulmonary resuscitation and coronary revascularization and timely insertion of LVAD before the onset of complications might lead to better survival.
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