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Primary coronary artery bypass grafting (CABG) is performed routinely in elderly patients with good results. However, the risk profile and outcomes of reoperative CABG in elderly patients are not well defined. Our purpose was to study the risk profile and hospital outcomes of isolated reoperative CABG in elderly patients (75 years and older) compared to isolated primary CABG in the same age group.

Between January 1990 and December 2010, 3483 elderly patients (age ≥ 75 years) underwent isolated CABG at our institution. Of these, 129 (3.7%) underwent reoperative CABG. Data were prospectively collected in a computerized database. Independent predictors of hospital mortality were determined by multivariable logistic regression.

Hospital mortality was 3.2% and 8.5% (p < 0.001) in elderly patients in the primary group and reoperative group, respectively. Perioperative …