Arterial revascularisation using in situ or Y-composite conduits of internal thoracic arteries: early results

Background. The use of one internal thoracic artery has long been considered a gold standard for coronary artery bypass grafting. However, despite the benefits, the frequency of using both internal mammary arteries remains low. The relationship between improving coronary artery bypass grafting results and the risk of complications after surgery using two internal thoracic arteries are yet to be resolved. Aim. We compared immediate and mid-term outcomes of coronary artery bypass grafting using one and two mammary arteries. Methods. Two hundred and thirty-one (231) patients with coronary artery disease, after microscope-assisted coronary artery bypass surgery, were categorised into two groups: group I - patients had received one internal mammary artery during surgery (n = 177), and group II - patients had received two internal mammary arteries during surgery (n = 54). Propensity-score matching was applied to reduce differences between groups, therefore two groups of 50 patients were obtained after matching. Results. Operations with bilateral internal mammary grafting in comparison to single internal mammary grafting were associated with longer operating times (group I: 167.5 [150-190] min., group II: 205 [190-220] min., p function show_eabstract() { $('#eabstract1').hide(); $('#eabstract2').show(); $('#eabstract_expand').hide(); }