Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/48385
Title: Adequacy of dialysis in automated peritoneal dialysis: A clinical experience
Authors: Fernández Rodríguez, Ana María
Vega Díaz, Nicanor 
Palop Cubillo, Leocadia
Baamonde Laborda, Eduardo
Morales Umpierrez, Adelaida
Pérez Borges, Patricia
Navarro Zurita, Manuel
Plaza Toledano, Celia
UNESCO Clasification: 32 Ciencias médicas
3205 Medicina interna
Keywords: Creatinine
Kidney
Peritoneal dialysis
Peritoneum
Urea
Issue Date: 1997
Journal: Peritoneal Dialysis International 
Abstract: Objectives: To compare the peritoneal clearances of urea and creatinine in continuous ambulatory peritoneal dialysis (CAPD) with three types of automated peritoneal dialysis (APD): continuous cycling peritoneal dialysis (CCPD), 50% tidal peritoneal dialysis (TPD), and 25% TPD and to assess the usefulness of the peritoneal equilibration test (PET) in predicting peritoneal clearances in overnight APD. Patients: Eleven uremic patients (mean age 44.5 +/- 15.45 years with a mean time on dialysis of 42.63 +/- 25.62 months) were included in the study. Measurements: PET for urea and creatinine following Twardowski's method. Peritoneal clearances for urea and creatinine CAPD: samples of blood and dialysate within 24 hours. APD: blood mean levels of urea and creatinine before and after nighttime dialysis. Dialysate: urea and creatinine in nocturnal and daytime dialysate. Results: Peritoneal clearance of creatinine was 38.14 +/- 9.99 L/week/1.73 m2 in CAPD, 44.28 +/- 12.4 L/week/1.73 m2 in CCPD, 50.07 +/- 17.86 L/week/1.73 m2 in 50% TPD (p < 0.05) and 40.18 +/- 6.65 L/week/1.73 m2 in 25% TPD. Peritoneal clearance of urea improved significantly in the three modalities of APD: 51.91 +/- 12.58 L/week/1.73 m2 in CAPD; 66.7 +/- 9.9 L/week/1.73 m2 in CCPD (p < 0.05); 76.3 +/- 14.5 L/week/1.73 m2 in 50% TPD (p < 0.001) and 64.4 +/- 11.4 L/week/1.73 m2 in 25% TPD (p < 0.05). The dialysate/ plasma (D/P) ratio of creatinine at 30, 60, 120, 180, and 240 minutes showed significant correlation with nighttime APD clearance. Nevertheless, only the D/P ratio of urea at 30, 60, and 120 minutes correlated with overnight APD clearance. Conclusions: A remarkable improvement was observed with APD regarding the clearance of urea mainly when 50% tidal peritoneal dialysis was used, whereas it was less noticeable in the clearance of creatinine. The PET is a helpful tool in predicting overnight peritoneal clearances of creatinine but it is less useful in predicting urea clearance.
URI: http://hdl.handle.net/10553/48385
ISSN: 0896-8608
Source: Peritoneal Dialysis International[ISSN 0896-8608],v. 17, p. 442-448
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