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  • Title: The impact of diabetes mellitus on two-year mortality following contemporary percutaneous coronary intervention: implications for revascularization practice.
    Author: Andron M, Perry RA, Egred M, Alahmar AE, Grayson AD, Shaw M, Roberts E, Palmer ND, Stables RH.
    Journal: J Interv Cardiol; 2009 Oct; 22(5):420-6. PubMed ID: 19453821.
    Abstract:
    OBJECTIVE: To assess the impact of diabetes on 2-year mortality in current PCI practice. BACKGROUND: In patients with coronary artery disease undergoing revascularization, diabetes mellitus is associated with higher mortality. METHODS: A retrospective analysis was done of all patients undergoing PCI at our tertiary center between January 2000 and December 2004. There were 6,160 PCI procedures performed in 5,759 patients who received at least one stent. Of these patients, 801 (13.9%) were diabetic and 4,958 (86.1%) were nondiabetic. The primary outcome measure of the study was all-cause mortality. All patients were followed up for a period of 2 years. Multivariate logistic regression analysis was used to test for a potential independent association between diabetic status and follow-up mortality. RESULTS: Before adjustment, a trend toward higher mortality was observed in diabetic patients compared to non-diabetics at 1 year (3.2% vs 2.4%) and 2 years (5.1% vs 3.8%), P = 0.12. Independent predictors for mortality were increasing age, renal dysfunction, peripheral vascular disease, NYHA class >2, urgent PCI, treating left main stem lesions, vessel diameter < or = 2.5 mm, and 3-vessel disease. The use of drug-eluting stent was associated with a reduction in mortality. Diabetes was found to have no independent impact on mortality following PCI (odds ratio = 1.08; 95% confidence intervals = 0.73-1.60; P = 0.71). CONCLUSION: The presence of diabetes was not an independent predictor of mortality following PCI. A diabetic patient that does not require insulin treatment and has no evidence of macro- or microvascular diabetic disease could enjoy a PCI outcome similar to nondiabetic subjects.
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