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Rehabilitation Practice and Science

Translated Title

健康成人膀胱適應力的量化分析

Abstract

Bladder compliance expresses the relationship between bladder volume and detrusor pressure and is generally regarded as a measure of bladder stiffness or distensibility. Based on the varied selection criteria during the urodynamic study, differences in bladder compliance often exist. The objective of this study was to provide reference ranges for ”normal” variability in bladder compliance among healthy subjects.A total of twenty-four healthy subjects, twelve men and twelve women with mean age of 25.2 years and estimated maximal capacity (EMC) of 393 ml, were enrolled in this study. During the standardized procedures of urodynamic study, pairs of data on bladder volume and detrusor pressure were simultaneously recorded at five infusion stages, including at the beginning of examination, infusing at 100 ml, infusing up to half of EMC, infusing at initial detrusor contraction, and infusing at EMC. The calculation of bladder compliance was based on a theoretical equation (△V/△P). Because there is no standard, variability ranges for mean, median, 25th to 75th percentiles (interquartile range), and quartile coefficient of dispersion were calculated for choice. The results showed the least variable range was obtained in the method, where △V is the capacity change between the beginning of examination and the initial detrusor contraction and △P is the detrusor pressure change between the beginning of examination and the initial detrusor contraction. These values and ranges of variability are as follows: mean value, 61; median value, 61; interquartile range, 53-68; quartile coefficient of dispersion, 0.11. The measurements of bladder compliance have variability in different urodynamic studies. Knowing the least range of variability can be helpful for assessment in patients with voiding dysfunction in future.

Language

Traditional Chinese

First Page

31

Last Page

37

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