Postoperative Outcomes in Patients with Chronic Renal Failure Undergoing Coronary Artery Bypass Grafting in Madani Heart Center: 2000-2010

Renal failure predisposes patients to adverse outcome after coronary artery bypassgrafting (CABG). Renal dysfunction is a predictor of increased morbidity and mortalityafter CABG, whether it is dialysis-dependent or not. In a retrospective study from April2000 to December 2010, seventy-six patients (60 male and 16 female with the mean ageof 58.57±7.93 years) with different categories of chronic renal failure undergoing CABGin Shahid Madani Hospital, were studied. The cardiac disease leading to the operation wascoronary artery disease (CAD) in all patients. Patients demographic, surgical andlaboratory data were gathered from hospital records. Data were then analyzed. Meanhospital stay was 10.16±7.16 days. The preoperative mortality rate was 10.5% (15% innon dialysis and 5.6% in dialysis dependant patients with no significant difference).Morbidity rate was 28.9% (respectively 30% and 27.8% in dialysis and non dialysispatients with no significant difference) including in-hospital myocardial infarction (MI)(10.5%), in-hospital stroke (2.6%), in-hospital bleeding (21.1%) and in-hospital infection,pneumonia, (5.3%). Mean creatinine and blood urea nitrogen (BUN) levels weresignificantly increased after surgery (p 0.001). Postoperative hemodialysis rate was33.3%. Chronic renal failure whether dialysis-dependant or not increases in-hospitalmortality and morbidity in patients undergoing CABG. For CRF patients not on dialysiswith a creatinine 2.5 gm/dL, there is a strong likelihood of postoperative dialysis.