RENAL FUNCTION RECOVERY AND MAINTENANCE OF RESIDUAL DIURESIS IN CAPD AND HEMODIALYSIS

During 1981-1984, at our center 6/75 patients on CAPD and 1/86 on HD demonstrated a recovery of renal function. This and the observation that diuresis was maintained on CAPD, led us to study urine output (UO) and creatinine clearance (CrCI) in 41 patients on CAPD (CAPDp) and 45 on HD (HDp) without the use of diuretics. CAPDp had a decline in diuresis from 1201 ± 379 mI/day to 731 ± 572 (p < 0.01). HDp diuresis decreased from 1233 ± 439 to 438 ± 568 (p < 0.01). Creatinine clearance: HDp 5.8 ± 1.6 ml/min before, 1.3 ± 1.5 after; CAPDp 6.4 ± 2.0 before, 3.9 ± 2.9 after. After one year, HDp showed a significant drop in diuresis; three years passed before CAPDp had significant drop. Patients with glomerulonephritis showed the same trend on HD and CAPD. CAPDp with interstitial nephropathy had a smaller mean annual decrease in UO and CrCI, compared to HDp. CAPDp with nephroangiosclerosis showed less decrease in diuresis compared to HDp. These data confirm that, compared to HD, CAPD treatment main From the Department of Nephrology , Spedali Civili, Brescia, Italy.