Patients on Chronic Peritoneal Dialysis for Ten Years or More in North America

Abstract

Thirty-six patients on peritoneal dialysis (PD) for more than ten years in six North American centers were analyzed retrospectively. In the six centers, the percentage of patients surviving for more than ten years varied between 0.8% and 7.3%. The study group included 27 females and 9 males aged 38.6 ± 14.2 years [mean ± standard deviation (SD)] at the start of treatment. Of the 36 patients, 28 were Caucasian. The most common cause of end-stage renal disease (ESRD), present in 12 patients, was chronic glomerulonephritis. Only 4 patients had diabetes. At the beginning of the study, 19 patients had hypertension (the most common comorbid condition); 11 had no comorbid conditions at the start. Creatinine clearance at the start was 4.12 ± 3.5 mL per minute, and the mean duration to anuria was 51 ± 25 months. Mean initial body weight was 55 ± 9 kg, and mean body surface area was 1.5 ± 0.2 m2. Serum albumin levels showed an increase from 33.8 ± 3.6 g/L at the start of the study to 38.2 ± 3.9 g/L at the end. Hospitalization rate was low at 0.5 ± 0.3 admissions per patient–year, and duration of hospitalization was 4.8 ± 3.7 days per patient–year. Peritonitis was the most common cause of hospitalization. The mean peritonitis rate was 1 episode every 52 ± 48 patient–months. There were 36 catheter changes in 18 patients; 16 patients had a single PD catheter throughout the period of study. Autonomous hyperparathyroidism was the most common long-term complication. At the end of the study period, 11 patients were still on PD, 9 had died, 5 had been transferred to hemodialysis (HD), 1 was alive with a functioning allograft, and 1 was lost to follow-up. We conclude that patients who survive longer than ten years on PD are most likely to be young Caucasian females, small in body size, who are non diabetic, with few comorbid conditions. These long-term survivors have few hospitalizations, and their peritonitis rate is low. In this group of patients, severe autonomous hyperparathyroidism is the most common long-term complication.