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REVIEWS AND ORIGINAL ARTICLES |
From the Division of Nephrology, Lankenau Hospital-Haverford Dialysis Unit, Philadel. phia, Pennsylvania.
The CAPD prescription, expressed as daily drainage volume, can be
formulated as a function of the recommended dietary protein intake and the
average BUN level. This process is greatly simplified because urea nitrogen
reaches a state of equilibrium on CAPD. The ratio of the actual drainage
volume to this prescribed drainage volume - a dialysis index (Dl), reflects
the fraction of urea nitrogen clearance achieved. Used with the average BUN
level, the dialysis index provides an estimate of the protein catabolic rate
(PCR), in gm/kg/day. When integrated these three factors -BUN, Dl and PCR, can
be applied to optimize diet and dialysis and may provide a basis for comparing
treatment results between patients and between centers.
KEY WORDS: CAPD prescription; Nitro. gen balance; CAPD dialysis index Adequacy of dialysis.
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