Impact of off-pump coronary artery bypass grafting on in-hospital outcomes for patients with ischemic mitral regurgitation

Objectives. Combined coronary artery bypass grafting (CABG) and mitral valve repair (MVR) are associated with prolonged cardiopulmonary bypass (CPB) and aortic clamping time. Off-pump CABG has been claimed to avoid physiologic derangements related to CPB and myocardial anoxia. However, the benefit of off-pump surgery during combined myocardial revascularization and MVR remains unclear. The objective of our study was to determine whether off-pump CABG could improve the results of CABG+MVR combination. Methods. This retrospective study includes 62 patients, who underwent CABG combined with mitral valve repair or replacement (MVR). Coronary surgery was performed before MVR. In 33 (53.1 %) cases CABG was done off-pump on a beating heart, while in the remaining 29 (46.9%) cases on-pump surgery was performed. Results. The CPB time was significantly lower when we used the off-pump technique: 91.0 vs. 141.0 min in the on-pump group (p