“Anaortic” Off-Pump Coronary Artery Bypass Grafting Significantly Reduces Neurological Complications Compared to Off-Pump and Conventional On-Pump Surgery with Aortic Manipulation

Abstract

Objective: Most studies comparing off-pump coronary artery bypass grafting (OPCAB) with conventional on-pump coronary artery bypass grafting (ONCAB) include patients with aortic manipulation in the OPCAB group. Performing OPCAB without aortic manipulation, i.e., “anaortic” OPCAB (anOPCAB), may improve neurological outcome. Methods: We reviewed the perioperative data of all isolated CABG patients at two metropolitan hospitals for the period from January 2002 to December 2007. Multiple logistic regression analysis was performed to determine whether the type of procedure was an independent predictor of adverse neurological outcome. Results: Out of a total of 3699 consecutive patients, 1346 were anOPCAB, 600 OPCAB and 1753 ONCAB cases. Neurological complications occurred in 0.9 % of all patients. Compared to the anOPCAB group, there was a statistically significant higher odds for neurological complications in the OPCAB group [odds ratio (OR) 7.01, 95 % confidence interval (CI) 1.4–35.0, p = 0.0175] and in the ONCAB group (OR 12.33, 95 % CI 2.9–52.2, p = 0.0007). Conclusions: In this series “anaortic” OPCAB surgery significantly decreases the risk of neurological complications compared to both ONCAB and OPCAB with aortic manipulation. If possible, we advocate avoiding aortic manipulation in OPCAB surgery.

Key words

coronary bypass surgery - stroke - cardiopulmonary bypass - off‐pump

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