Peritoneal dialysis (PD) registry with 2012 survey report

Abstract

In 2009, we started the peritoneal dialysis (PD) registry with the cooperation of the Japanese Society for Peritoneal Dialysis as part of the annual nationwide survey conducted at the end of each year by the Statistical Survey Committee of the Japanese Society for Dialysis Therapy. In this study, we examined the current status of PD patients on the basis of the 2012 survey results. The subjects are PD patients who lived in Japan and participated in the nationwide survey conducted at the end of 2012. Descriptive analysis was performed mainly focusing on the current status of the combined use of PD and another method such as hemodialysis (HD) or hemodiafiltration (HDF), the method of dialysate exchange, the use of an automated peritoneal dialysis (APD) machine, and the incidences of peritonitis and catheter exit-site infection. From the results of the facility survey in 2012, the number of PD patients was 9,514, a decrease of 128 from that in 2011. The percentage of PD patients with respect to all the dialysis patients was 3.1%, a decrease of 0.1%. Among the PD patients, 347 did not undergo PD despite having a peritoneal lavage catheter, 175 were started on PD in 2012 but introduced to other blood purification methods in 2012, and 1,932 underwent both PD and another method such as HD or HDF (PD+HD combination therapy). The percentage of patients who underwent PD+HD combination therapy increased with the number of years on PD (PD period): less than 1 year, 4.8%; 1-2 years, 9.2% ; 2-4 years, 16.3% ; 4-8 years, 32.0% ; and 8 years or longer, 47.5%. The percentage of PD patients for which the dialysate was completely manually exchanged was 29.8%, whereas the percentages of PD patients who used a bag-exchange device based on ultraviolet-light irradiation and thermal sterile joint systems were 54.7 and 13.9%, respectively. The percentage of PD patients who used an APD machine was 43.4% with respect to the PD patients with a PD period of less than one year ; this decreased with increasing PD period beyond two years. The mean incidences of peritonitis and catheter-exit-site infection were 0.22 and 0.36 per patient per year, respectively.