[Analysis of risk factors of postoperative hemodialysis in patients undergoing off-pump coronary artery bypass grafting].

Objective: To investigate the risk factors of postoperative hemodialysis in patients undergoing off-pump coronary artery bypass grafting (OPCAB).

Methods: The perioperative data of 2379 consecutive patients undergoing OPCAB from November 2007 to February 2009 were analyzed retrospectively. Patients were divided into dialysis group and non-dialysis group according to their use of hemodialysis therapy or not.

Results: Fifty-four patients experienced hemodialysis postoperatively. The incidence of hemodialysis was 2.3%, the mortality rate of dialysis group and non-dialysis group was 18.5% and 0.9% respectively. Univariate analysis showed that these factors significantly related with the postoperative dialysis:intraoperative ventricular fibrillation, emergent cardiopulmonary bypass, preoperative atrial fibrillation, intraoperative atrial fibrillation, preoperative renal dysfunction, intraoperative high-dose adrenaline usage, ventricular aneurysm, combined valvular disease, hypertension, age and numbers of grafting vessels. Multivariate logistic regression showed that intraoperative ventricular fibrillation, intraoperative high-dose adrenaline usage, hypertension, age and the numbers of grafting vessel were the risk factors of postoperative hemodialysis for patients undergoing OPCAB surgery.

Conclusion: Intraoperative ventricular fibrillation, intraoperative high-dose adrenaline usage, hypertension, age and the numbers of grafting vessels were the independent predictors of postoperative hemodialysis in patients undergoing OPCAB surgery.