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  • Title: Sex-specific long-term outcomes after combined valve and coronary artery surgery.
    Author: Doenst T, Ivanov J, Borger MA, David TE, Brister SJ.
    Journal: Ann Thorac Surg; 2006 May; 81(5):1632-6. PubMed ID: 16631648.
    Abstract:
    BACKGROUND: The purpose of this study is to compare sex-specific, long-term outcomes after combined valve and coronary artery bypass graft surgery (CABG). METHODS: Between 1990 and 2000, 1,567 patients underwent combined valve and CABG surgery at our institution. Our surgical database was linked to a governmental administrative hospital discharge database and a registry of deaths to obtain long-term follow-up. All patients underwent CABG plus aortic (62%), mitral (31%), or multiple valve surgery (7%). RESULTS: Women had more preoperative risk factors than men (namely, hypertension, diabetes mellitus, congestive heart failure, atrial fibrillation, and stroke; all p < 0.001). The prevalence of triple-vessel disease was the same between men and women, but women received fewer mammary grafts and fewer total bypass grafts (both p < 0.01). Women received fewer mitral valve repairs and more mitral valve replacements than men (p = 0.014). Length of follow-up was 5.3 +/- 3.2 years (mean +/- SD; range, 0 to 12.5) and was 99.8% complete. Both sexes had similar long-term survival rates. Women were at higher risk of stroke during follow-up (risk ratio = 1.52, 95% confidence interval: 1.1 to 2.1). There were no sex differences in rehospitalization for acute myocardial infarction (p = 0.9), heart failure (p = 0.4), redo cardiac surgery (p = 0.5), or endocarditis (p = 0.4). CONCLUSIONS: Women have a higher preoperative risk profile than men undergoing combined valve and CABG surgery, but long-term survival rates are similar. Female sex is an independent predictor of stroke during follow-up. Further studies should focus on the cause of increased risk of stroke and methods of prevention.
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