Sex-Related 30-Day and Long-Term Mortality in Acute Myocardial Infarction Patients Treated with Percutaneous Coronary Intervention.

BACKGROUND The data on sex as an independent risk factor for death in acute myocardial infarction (MI) patients are still contrasting. The aim was to assess how sex influences 30-day and long-term all-cause mortality in MI patients undergoing percutaneous coronary intervention (PCI). MATERIALS AND METHODS Data from 3624 MI patients undergoing PCI at our institution from January 2009 to December 2014, 30.6% were women, were analyzed. A propensity-matched analysis was performed to adjust for differences in the baseline characteristics between men and women. The effect of sex on 30-day and long-term mortality was observed. Multivariate logistic regression modeling was used for 30-day mortality and Cox regression analysis for long-term mortality. The median follow-up time was 27 months (25th, 75th percentile: 9, 48). RESULTS Women had a significantly higher unadjusted 30-day (5.9% in men vs. 9.5% in women; p < 0.0001) and long-term mortality (13.5% in men vs. 19.0% in women; p < 0.0001). In a propensity-matched analysis, female sex was not associated with a higher 30-day (adjusted odds ratio: 1.46; 95% confidence interval: 0.97-2.19) or long-term mortality (hazard ratio 1.02; 95% CI 0.81-1.28). Age older than 77 years, cardiogenic shock, PCI of left anterior descending artery (LAD), thrombolysis in myocardial infarction (TIMI) flow less than 3 after PCI, hypertension, dyslipidemia, and P2Y12 receptor antagonists were identified as independent predictors of 30-day and long-term mortality. In addition, renal failure requiring dialysis predicted long-term mortality. CONCLUSION Older age, comorbidities, worse clinical presentation, and adjunctive pharmacotherapy rather than sex may explain the higher mortality rate in women with MI undergoing PCI.