Clinical Outcomes After Coronary Artery Bypass Grafting in Patients with Dialysis-Dependent End-Stage Renal Disease and an Analysis of the Related Influencing Factors
Abstract Backgroud Perioperative and short/mid-term survival rates of dialysis-dependent patients with end-stage renal disease (ESRD), who undergo coronary artery bypass grafting (CABG), and the factors influencing mortality are not well evaluated In China. Method We retrospectively analyzed the perioperative and postoperative 1-, 3-, and 5-year survival rates of 53 dialysis-dependent ESRD patients who underwent CABG, and compared the factors related to perioperative mortality and all-cause mortality during the postoperative follow-up. Survival rates were expressed as Kaplan–Meier survival curves, and factors influencing the follow-up survival rates were analyzed using the log rank (Mantel–Cox) test. Result There were eight perioperative deaths, resulting in 15.1% mortality. Intraoperative intra-aortic balloon pump use (P=0.01), advanced age (P=0.0027), and high EuroSCORE II score (P=0.047) were associated with increased perioperative mortality. Forty-five discharged patients were followed from 2 months to 10 years (median, 4.2 years) postoperatively. There were 19 all-cause deaths, including 10 cardiac deaths (10/19, 52.6%). Comparisons between groups indicated that the presence of peripheral artery disease (PAD) increased mortality during follow-up (P=0.025); 1-, 3-, and 5-year survival rates were 93.3%, 79.5%, and 66.8%, respectively. The results of the long-rank analysis indicated that the presence of PAD was a risk factor for postoperative survival (log rank χ 2 =4.543; P=0.033). Conclusion Dialysis-dependent patients with ESRD had high perioperative mortality and unsatisfactory short- and medium-term survival after CABG. PAD was a risk factor affecting patients’ postoperative survival. Multidisciplinary teamwork is needed to enhance postoperative management and reduce complications, to improve postoperative survival in these patients.