Original Article
Single-center usage of right internal mammary artery in coronary artery bypass grafting
Liu Gang, Chen Yu, Chen Shenglong, Yang Wei, Lian Bo, Han Zengqiang, Gao Qing, Zhao Zhou, Shi Yi
Published 2023-03-25
Cite as Chin J Thorac Cardiovasc Surg, 2023, 39(3): 142-147. DOI: 10.3760/cma.j.cn112434-20220628-00219
Abstract
ObjectiveTo report the use of right internal mammary artery (RIMA) in coronary artery bypass grafting (CABG) in our center, summarize the purpose and configuration of RIMA graft in CABG.
MethodsAll clinical data of coronary artery bypass grafting patients in our center performed in the past 6 years were collected and analyzed retrospectively. Those patients were divided into RIMA group and non-RIMA group according to the use of RIMA. Propensity score matching had been performed before these data was compared. Surgical technique of use of RIMA was summarized.
Results1 537 CABG had been performed from January 1st, 2016 to October 31st, 2021 in our center. Of which, 128 cases were allocated to RIMA group. After propensity score matching having been performed, there was no difference in baseline data between the RIMA group and the non-RIMA group (128 cases), and the RIMA group had more grafts and arterial grafts than the non-RIMA group. The postoperative drainage volume in the RIMA group was more than that of the non-RIMA group. However, there was no statistical significance in difference of transfusion between two groups. Also, there was no difference in postoperative mechanical ventilation time, ICU time and length of stay postoperatively. The postoperative complications were similar between two groups. Postoperative patency rate of the RIMA graft was as high as 95.2%. The target vessels of RIMA included left anterior descending branch (45 cases), diagonal branch (19 cases), intermediate branch (12 cases). obtuse marginal or circumflex branch (16 cases), posterior descending branch (5 cases) and right coronary trunk (18 cases). 41 RIMA used as free grafts, 87 used as in situ grafts, of which 19 RIMA need lengthened by other graft vessels.
ConclusionThe patency rate of RIMA graft is high and the application of RIMA do not increase the surgical risk significantly. However, there are versatile contour of RIMA grafts. It can be used as artery graft in selected patients.
Key words:
Coronary artery bypass grafting; Right internal mammary artery; Propensity score matching
Contributor Information
Liu Gang
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
Chen Yu
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
Chen Shenglong
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
Yang Wei
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
Lian Bo
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
Han Zengqiang
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
Gao Qing
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
Zhao Zhou
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
Shi Yi
Department of Cardiac Surgery, Peking University People’s Hospital, Beijing 100044, China
