Abstract
Patients with recent myocardial infarction (MI) or percutaneous coronary interventions (PCI) have a higher ischemic risk in addition to perioperative bleeding risk when undergoing coronary artery bypass grafting (CABG). Data regarding preoperative dual antiplatelet therapy (DAPT) failed to create a clear recommendation. In the present study, we assessed the relationship between preoperative DAPT use and adverse outcomes, particularly in ST-elevation MI (STEMI) patients. We retrospectively analyzed 748 consecutive patients with STEMI who underwent subsequent CABG surgery. Patients were divided into 2 groups: those on DAPT up to the day before CABG and those discontinued DAPT >5days before CABG. Predictors of in-hospital mortality and major bleeding were analyzed by multivariate analysis. Preoperative DAPT was not associated with in-hospital mortality (Odds Ratio (OR):1.81; 95% Confidence Interval (CI): .89-3.68, P = .10) and major bleeding (OR: 1.15; 95% CI: .63-2.08, P = .65) after multivariate analysis. However, glycoprotein (Gp) 2b/3a inhibitors were independently associated with higher major bleeding rates. Age, shock, and EF (ejection fraction) <30% were associated with in-hospital mortality. Previous MI, Gp 2b/3a inhibitors, and EF <30% were predictors of major bleeding. In conclusion, there were no association between pre-CABG DAPT use and in-hospital mortality and major bleeding.
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