title: Comparison of clinical characteristics between automated peritoneal dialysis and continuous ambulatory peritoneal dialysis: a 2-year single-center observational study.
abstract: OBJECTIVE
  To date, there is convincing evidence for the preservation of residual renal function (RRF) in peritoneal dialysis (PD) patients; however, substantially variable data exist on the incidence rate of infectious complications and the decline of RRF for automated peritoneal dialysis (APD) and continuous ambulatory peritoneal dialysis (CAPD). The purpose of our study was to investigate the relative merits or demerits of APD compared with CAPD.
  
  
  METHODS
  From November 1998 to November 2007, we retrospectively reviewed 32 patients on APD and 140 patients on CAPD. We compared incidences of infectious complications during the entry period. RRF and other PD parameters were determined and compared over 2 years of therapy. In addition, the period of hospitalization was also included for clinical outcome analysis.
  
  
  RESULTS
  There were no significant differences between the two modalities with regard to the incidence of peritonitis (1.42/100 patient-months for APD vs. 1.23/100 patient-months for CAPD, p = 0.66). At the end of the second year, there were no significant differences between APD and CAPD with regard to the decline of RRF (14.8 vs. 15.3 L/week/1.73 m(2), p = 0.84). However, APD significantly increased the value of total weekly Kt/V during this period. Furthermore, we observed a significant reduction in hospitalized days of APD compared with CAPD.
  
  
  CONCLUSIONS
  We concluded that the selection of the PD modality is not a major determinant of the decline in RRF. APD can be adapted to the targeted adequacy and is at least as efficacious as CAPD when it is expertly applied.
authors.affiliation: Division of Nephrology, Department of Internal Medicine, Chang Gung Memorial Hospital - Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan, ROC.
authors.forename: Yu-Jen
authors.initials: YJ
authors.lastname: Su
authors.forename: Chien-Te
authors.initials: CT
authors.lastname: Lee
authors.forename: Feng-Rong
authors.initials: FR
authors.lastname: Chuang
authors.forename: Chih-Hsiung
authors.initials: CH
authors.lastname: Lee
authors.forename: Yi-Chun
authors.initials: YC
authors.lastname: Wang
authors.forename: Ben-Chung
authors.initials: BC
authors.lastname: Cheng
authors.forename: Kuo-Tai
authors.initials: KT
authors.lastname: Hsu
authors.forename: Jin-Bor
authors.initials: JB
authors.lastname: Chen
mesh_terms: D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010530:Peritoneal Dialysis; D010531:Peritoneal Dialysis, Continuous Ambulatory; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome