Predictors of In-Hospital Prognosis After Primary Percutaneous Coronary Intervention for Acute Myocardial Infarction Requiring Mechanical Support Devices

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Background: Predictors of in-hospital outcome after primary percutaneous coronary intervention (PCI) for acute myocardial infarction (AMI) requiring mechanical support devices such as intra-aortic balloon pumping (IABP) and/or percutaneous cardiopulmonary support (PCPS) remain unclear. Methods and Results: Using the AMI-Kyoto Multi-Center Risk Study database, clinical background, angiographic findings, results of primary PCI, and in-hospital prognosis were retrospectively compared between primary PCI-treated AMI patients requiring mechanical assist devices (with-IABP/PCPS patients, n=275) and those without (without-IABP/PCPS patients, n=1,510). The with-IABP/PCPS patients were more likely to have a larger number of diseased vessels, lower Thrombolysis In Myocardial Infarction (TIMI) grade in the infarct-related artery (IRA) before/after primary PCI, and a significantly higher in-hospital mortality rate than the without-IABP/PCPS patients. On multivariate analysis, the number of diseased vessels ≥2 or diseased left main trunk (LMT) at initial coronary angiography (CAG) was the independent positive predictor of the in-hospital mortality in the with-IABP/PCPS patients, not in the without-IABP/PCPS patients, whereas acquisition of TIMI 3 flow in the IRA immediately after primary PCI was the negative predictor in the without-IABP/PCPS patients, not in the with-IABP/PCPS patients. Conclusions: The number of diseased vessels ≥2 or diseased LMT at initial CAG is an independent risk factor of in-hospital death in primary PCI-treated AMI patients requiring mechanical support devices.
2010-05-25

Predictors of In-Hospital Prognosis After Primary Percutaneous Coronary Intervention for Acute Myocardial Infarction Requiring Mechanical Support Devices

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