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为探讨组间特异性尿道阻力因子(URA)连续定量判断膀胱出口梗阻(BOO)的原理、方法与应用,对205例前列腺增生患者进行压力流率测定,使用计算公式或Grifiths列线图计算URA值。结果表明:URA≥2.842kPa(1kPa=10.20cmH2O)者172例(83.9%),诊断为BOO,URA<2.842kPa者33例(16.1%),为非BOO者。32例患者术后URA降低了6.6±0.8kPa,与AG图及Sch¨afer列线图的诊断结果基本相符。URA能够连续定量地直接测量尿道阻力,诊断BOO,判断疗效,具有临床应用价值。
To investigate the principle, method and application of URA in quantitatively determining bladder outlet obstruction (BOO), 205 patients with benign prostatic hyperplasia were measured for pressure-flow rate and calculated using the formula or Grifiths nomogram URA value. The results showed that there were 172 cases (83.9%) with URA≥2.842kPa (1kPa = 10.20cmH2O), BOO was diagnosed as URA <2.842kPa and 16.1% with URA <2.842kPa. The URA of 32 patients decreased by 6.6 ± 0.8kPa, which was in good agreement with the diagnostic results of AG and Sch a afer nomograms. URA can directly and quantitatively measure urethral resistance, diagnose BOO and judge the curative effect, which has clinical value.