Abstract
Pre-existing renal dysfunction predisposes to acute renal failure (ARF) in patients undergoing coronary artery bypass grafting. We assessed the incidence and impact of the development of ARF in this patient population in our unit. One-hundred and six patients had a preoperative serum creatinine of >or=0.13 mmol/L and underwent coronary artery bypass grafting in the year 2000. The incidence of ARF (as defined by a >or=50% rise in postoperative serum creatinine), hospitalization days, dialysis requirement, in-hospital and 1-year mortality, and potential risk factors for ARF were recorded. Of the patients recorded, 43/104 (41.35%) developed ARF following coronary artery bypass grafting. Patients with ARF stayed in hospital longer (P < 0.02). Ten out of forty-three patients required some form of dialysis and the in-hospital mortality of the renal failure group was 23% compared to 3.1% in the other group (P < 0.002). One year postoperatively, the group with renal failure had significantly worse survival (71.8% vs 98%P < 0.0001). For patients undergoing coronary artery bypass grafting, pre-existing renal dysfunction predisposes to the development of ARF, this is associated with prolonged hospitalization and increased mortality.
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