TITLE:
Coronary Artery Bypass Grafting with Complete Revascularization Can Provide Equivalent Long-Term Prevention of Ischemic Cardiac Events in Patients on and Not on Hemodialysis: A Graft-Matched and Baseline-Adjusted Analysis
AUTHORS:
Hajime Imura, Makoto Shirakawa, Motohiro Maeda, Kenichiro Takahashi, Takahide Yosio, Yuji Maruyama, Takashi Nitta
KEYWORDS:
Coronary Artery Bypass Grafting, Hemodialysis, Complete Revasculariza-tion, Gastroepiploic Artery
JOURNAL NAME:
Surgical Science,
Vol.9 No.10,
October
31,
2018
ABSTRACT: Background: Patients on hemodialysis are at high risk of adverse cardiac events after coronary artery bypass grafting (CABG). The aim of this study is to know whether CABG with complete revascularization and similar graft selection can provide equivalent long-term benefits for patients on and not on hemodialysis. Methods: Between 2004 and 2018, 746 patients underwent isolated CABG, of which 106 were on hemodialysis. Propensity matching on baseline characteristics, graft types and on/off-pump CABG was performed to compare clinical outcomes between patients on (n = 102) and not on (n = 102) hemodialysis. Results: Complete revascularization was achieved in all patients. The mean follow-up was 112.5 ± 46.6 months. Off-pump rates (hemodialysis vs non-hemodialysis, 93/102 vs 94/102, p > 0.999) and graft selections (distal anastomoses: 3.7 ± 1.4 vs 3.8 ± 1.5, p = 0.377, ITA grafts: 1.4 ± 0.6 vs 1.5 ± 0.6, p = 0.560, arterial grafts: 1.9 ± 0.9 vs 2.0 ± 0.8, p = 0.658, vein grafts: 0.69 ± 0.63 vs 0.65 ± 0.70, p = 0.513) were well balanced between the groups. Hospital mortality was higher in patients on hemodialysis than in those not on hemodialysis (5/102 vs 1/102, p = 0.212). The Kaplan-Meier analysis revealed that cardiac death (without non-cardiac causes) was significantly more common in patients on hemodialysis than in those not on hemodialysis (p = 0.018). However, there were no significant differences in deaths due to ischemic heart disease (p = 0.327), repeated revascularization (p = 0.542), myocardial infarction (p = 0.783), and heart failure requiring admission (p = 0.371). Conclusion: CABG with complete revascularization and similar graft selection provides equivalent long-term benefits with regard to the prevention of adverse cardiac events due to ischemic heart disease in patients on and not on hemodialysis.