Abstract
We developed a peritoneal dialysis (APD) cycler that automatically exchanges bags of dialysis solution for CAPD patients during the night sleep. To increase the ability of dialysis. patients to perform social activities, we attempted nightly PD during sleep using this system instead of bag exchanges during daytime activities. The compact apparatus, measuring 132×90×40cm and weighing 700g, consists of an electronic timer and a motor, and can be mounted on a Y-shaped transfer set. The motor opens and closes the valve to achieve infusion and drainage of fluids. The dialysis solution was warmed with Mareru. selftemperature-control plane heaters consisting of fine carbon particles and polymers. No changes were observed in the laboratory findings after the use of the apparatus for 6 months, but fullness of the stomach was an occasional complaint. Nightly PD using the simple APD cycler is useful for rehabilitation of dialysis patients and is effective for as many as i exchanges per day in case of reduced peritoneal function.
