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Renal Unit of Tung Wah Hospital, University of Hong Kong, Hong Kong. wkloc@hkucc.hku.hk
OBJECTIVE: Superior patient survival on continuous ambulatory peritoneal dialysis (CAPD) with 3 x 2-L exchanges has been reported from Hong Kong. This study examined the relationship between indices of dialysis adequacy and nutrition and patient survival on CAPD in Hong Kong. DESIGN: A cross-sectional study on prevalent CAPD patients. Patients were assessed for indices of dialysis adequacy and nutritional status with a composite nutritional index (CNI). Patients were then followed for 24 months. Survival data were analyzed according to adequacy indices and nutritional status. SETTING: All prevalent CAPD patients in nine dialysis centers in Hong Kong as of 1 April 1996. MAIN OUTCOME MEASURE: Mortality. RESULTS: 937 patients were assessed: 68.2% were using 3 x 2-L exchanges per day; mean age was 54.6 +/- 13 years. Mean total Kt/V was 1.83 +/- 0.42 and total creatinine clearance was 55.6 +/- 19.5 L/week/1.73 m2. 19% of patients were moderately to severely malnourished according to the CNI. There was no significant correlation between indices of adequacy and serum albumin or CNI. The 1- and 2-year patient survival from the time of assessment was 90.9% and 79.8%. There was a trend toward better survival in patients with Kt/V greater than 2.0, but it was not statistically significant. Peritoneal Kt/V did not impact survival in anuric patients. Malnourished patients had poorer survival than patients who were better nourished (p = 0.0259). After adjusting for age and diabetes, CNI was predictive of mortality but Kt/V and creatinine clearance were not. CONCLUSIONS: This study demonstrates the importance of nutritional status over adequacy indices in predicting patient survival. There was a lack of correlation between nutritional status and conventional indices of dialysis adequacy.
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  E. A. Brown, S. J. Davies, P. Rutherford, F. Meeus, M. Borras, W. Riegel, J. C. Divino Filho, E. Vonesh, and M. Van Bree Survival of Functionally Anuric Patients on Automated Peritoneal Dialysis: The European APD Outcome Study J. Am. Soc. Nephrol., November 1, 2003; 14(11): 2948 - 2957. [Abstract] [Full Text] [PDF]
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