Does off-pump coronary artery bypass grafting really preserve renal function?
Hayashida N, Teshima H, Chihara S, Tomoeda H, Takaseya T, Hiratsuka R, Shoujima T, Takagi K, Kawara T, Aoyagi S. Department of Surgery, Kurume University, Japan. nobuhiko@med.kurume-u.ac.jp It is well known that the use of cardiopulmonary bypass (CPB) influences renal function and occasionally results in renal failure following cardiac surgery. Coronary artery bypass grafting (CABG) without CPB may avoid this and preserve the perioperative renal function. The present study enrolled 52 patients undergoing CABG without CPB (OPCAB group) and matched them for renal function and prognostic variables with 53 patients undergoing conventional CABG (CABG group). Perioperative renal function and early clinical results were assessed. The OPCAB group had significantly less increase in creatinine levels (0.16 +/- 0.05 vs 0.45 +/- 0.06 mg/dl; p = 0.01) and greater creatinine clearance (81.6 +/- 7.3 vs 56.3 +/- 4.8ml/min; p = 0.01) postoperatively. Postoperative recovery of free water clearance was m
