This trial was conducted to determine whether tidal peritoneal dialysi
s (TPD) could be used at home, reduce dialysis time, and provide clear
ances equal those of continuous cyclic peritoneal dialysis (CCPD). Six
children ages 5-16, followed at the University of Iowa Hospitals and
Clinics, used an automated cycler to perform TPD. Dialysis sessions we
re limited to 8 hours and daytime dwell volumes minimized Dialysate ur
ea, total nitrogen and creatinine losses were measured, and dialysis w
as adjusted to provide therapy equal to the patients' earlier CCPD. Af
ter 6 months of treatment, the children and their parents were intervi
ewed to determine their satisfaction or reservations with TPD. The sub
jects and their parents uniformly felt comfortable performing TPD at h
ome and preferred tidal dialysis to CCPD because the shorter dialysis
allow more time for family and after-school activities. TPD attained c
reatinine and urea removal equal that of CCPD, but only when dialysate
flow exceeded 40 ml/kg/Hr. Using higher dialysate flow rates increase
d the total quantity of dialysate used for dialysis (9 liters/CCPD, 16
liters/TPD), but did not induce dialysis discomfort.