How to Use a Right Internal Thoracic Artery Graft in On- and Off-Pump Coronary Artery Bypass Grafting
DOI:
https://doi.org/10.59958/hsf.7605Keywords:
coronary artery bypass grafting, right internal thoracic artery, off-pump, grafting techniques, sternal wound infectionAbstract
In coronary artery bypass grafting, internal thoracic artery grafts and other arterial grafts have shown superior results compared with saphenous vein grafts. The right internal thoracic artery (RITA) has been reported as one of these various arterial graft options. However, there are some limitations and concerns associated with using the RITA. This review presents the current topics and scientific evidence on the use of RITA grafts in coronary artery bypass grafting. The reviewed papers mainly focus on the operative results of using the RITA, graft configurations and target vessels, and the comparison between on- or off-pump coronary artery bypass procedure. The results of these studies suggest the followings. The method of using the RITA (either in situ or as a free graft) should be selected based on the need to reach crucial targets and the number of required target vessels. A free RITA graft anastomosed to the aorta with modified proximal anastomosis allows for the revascularization of multiple vessels with acceptable flow characteristics. For revascularization of the right coronary artery system with low-grade proximal stenosis, the RITA should not be used. The decision to use cardiopulmonary bypass depends on the patient's condition, target vessels, as well as the experience of institution. Skeletonized harvesting is more effective in preventing sternal wound infections in coronary artery bypass grafting using bilateral internal thoracic arteries compared with using a single internal thoracic artery.
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