Coronary Artery Bypass Grafting With and Without Manipulation of the Ascending Aorta - A Meta-Analysis

Background: The main criticism of surgery in the SYNTAX trial was increased rate of stroke when compared to percutaneous coronary intervention. We aimed to determine whether avoiding aortic manipulation would decrease the rate of stroke. Method: We performed a meta-analysis of seven studies comparing coronary artery bypass grafting (CABG) with and without manipulation of the ascending aorta. Results: When anaortic off-pump coronary artery bypass grafting (OPCAB) was compared with conventional CABG, the rate of stroke was 0.38% vs. 1.87% (p<0.0001). When anaortic OPCAB was compared with OPCAB using a side-clamp or proximal graft anastomosis device the rate of stroke was 0.31% vs. 1.35% (p=0.003). Conclusion: Avoiding aortic manipulation during CABG may decrease the rate of pen-operative stroke. (Heart, Lung and Circulation 2011;20:318-324) (C) 2011 Australasian Society of Cardiac and Thoracic Surgeons and the Cardiac Society of Australia and New Zealand. Published by Elsevier Inc. All rights reserved.