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  • Title: Off-pump coronary artery bypass grafting in patients with renal dysfunction.
    Author: Tabata M, Takanashi S, Fukui T, Horai T, Uchimuro T, Kitabayashi K, Hosoda Y.
    Journal: Ann Thorac Surg; 2004 Dec; 78(6):2044-9. PubMed ID: 15561032.
    Abstract:
    BACKGROUND: Renal dysfunction is a predictor of increased morbidity and mortality after coronary artery bypass grafting, whether it is dialysis-dependent or not. Several studies have shown the efficacy of off-pump technique in reducing morbidity and mortality in patients with renal dysfunction. However, the actual effect of renal dysfunction in off-pump coronary artery bypass grafting has not been well understood. METHODS: We conducted a retrospective review of 402 consecutive patients undergoing off-pump coronary artery bypass grafting from April 2001 to June 2003. Sixty-eight patients had chronic renal dysfunction (group A); 19 patients were dialysis-dependent; 334 patients had normal renal function (group B). Operative variables, morbidity, and mortality were compared between the two groups. Furthermore, multivariable analysis was performed to identify predictors for short-term survival. RESULTS: Preoperative characteristics were similar in the two groups. Blood transfusion rate was higher in group A than group B (57.4% and 25.7%, respectively; p < 0.001). In-hospital mortality was similar (1.5% and 1.2% in group A and B, respectively; p = 0.853). Multivariable analysis revealed that unstable angina, low ejection fraction, peripheral vascular disease and redo surgery are significant risk factors for poor early result of off-pump coronary artery bypass grafting. CONCLUSIONS: Early outcomes of off-pump coronary artery bypass grafting in patients with renal dysfunction were comparable to those in patients with normal renal function. Renal dysfunction is not a predictor of poor early outcomes after off-pump coronary artery bypass grafting.
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