【Abstract】Objective The aim of this study was to explore the characteristics and risk factors of the pain after peritoneal dialysis (PD) catheter implantation. Methods The end-stage renal disease patients undergoing PD catheter implantation in our hospital from January to December 2016 were recruited in this study. Numerical Rating Scale (NRS) was used to evaluate the pain. Patients were divided into three groups according to their pain score: mild, moderate and severe pain groups. Their demographic and clinical data were also collected. Results A total of 118 patients who received peritoneal dialysis catheter insertion in our center were enrolled in this study. Ninety (76.3%) patients had moderate to severe pain. Compared with mild

pain group, patients in moderate and severe pain groups had younger age (F=5.602, P=0.005), longer time of postoperative pain (χ2=24.613, P＜0.001), and higher proportion of pain caused by postoperative activity (χ2=11.080, P=0.004). A higher proportion of the patients in severe pain group had active omentum during operation (χ2=5.943, P=0.024). Multivariate logistic analysis showed that younger age (OR=0.96, 95% CI 0.93～0.99, P=0.011), catheter exit-site pain (OR=3.08, 95% CI 1.14～8.36, P=0.027) and pain caused by postoperative activity (OR=3.04, 95% CI 1.12～8.24, P=0.029) were the independent risk factors for postoperative moderate to severe pain. Conclusions The incidence of moderate to severe pain was 76.3% in patients after PD catheter insertion. The analysis of the characteristics and risk factors of the pain is useful for the search of appropriate

measures to relieve the pain.