• Meng Liu, Hua-Jun Zhang, Han Song, Nan Cheng, Yuan-Bin Wu, and Rong Wang.
• Department of Cardiovascular Surgery, Institute of Cardiac Surgery, PLA General Hospital, Institute of Cardiac Surgery, Beijing 100853, China.
• Chin. Med. J. 2021 Apr 1; 134 (10): 114611511146-1151.

BackgroundDiabetes mellitus (DM) is an important risk factor in the long-term outcomes of surgical revascularization. However, few studies have focused on patients with ischemic heart failure (IHF) and DM, and the results are controversial. This study aimed to evaluate the effect of DM on the long-term outcomes of IHF patients undergoing coronary artery bypass grafting (CABG).MethodsIn this propensity-matched study, data of IHF patients who underwent CABG in our hospital from January 2007 to December 2017 were analyzed. With a mean 73-month follow-up time, the patients were divided into two groups according to whether they had DM. The primary endpoint was all-cause death, and the secondary endpoint was a composite of all-cause death, stroke, recurrent myocardial infarction, and revascularization.ResultsThere was no significant difference in all-cause mortality between the two groups (5.8% vs. 4.1%, P = 0.216). The incidence of main adverse cardiovascular and cerebrovascular events (MACCE) in the secondary endpoint was significantly higher in the DM group than that in the non-DM group (10.4% vs. 8.1%, P = 0.023).ConclusionsDM can negatively affect the long-term outcomes of IHF patients undergoing CABG by significantly increasing the overall incidence of MACCE, though the long-term survival does not show a significant difference between the DM and non-DM patients.Copyright © 2021 The Chinese Medical Association, produced by Wolters Kluwer, Inc. under the CC-BY-NC-ND license.

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