Kojima M, Inui E, Ochiai A, Naya Y, Ukimura O, Watanabe H
Department of Urology, Kyoto Prefectural University of Medicine, Japan.
J Urol. 1997 Feb;157(2):476-9.
Ultrasound estimated bladder weight was compared to pressure-flow studies to test the ability of ultrasound estimated bladder weight to predict infravesical obstruction.
A total of 65 men with urinary symptoms underwent ultrasonic measurement of bladder weight and pressure-flow studies. Assuming the bladder is a sphere, ultrasound estimated bladder weight was calculated from bladder wall thickness measured ultrasonically and intravesical volume.
Ultrasound estimated bladder weight correlated significantly (p < 0.0001) with the Abrams-Griffiths number, urethral resistance factor and the Schäfer grade of obstruction. A cutoff value of 35 gm. for ultrasound estimated bladder weight revealed a diagnostic accuracy of 86.2% (56 of 65 cases) for infravesical obstruction with 12.1 (4 of 33) and 15.6% (5 of 32) false-positive and false-negative rates, respectively.
Ultrasound estimated bladder weight can be measured noninvasively at the bedside and it is promising as a reliable predictor of infravesical obstruction.
将超声估算的膀胱重量与压力 - 流率研究进行比较，以测试超声估算膀胱重量预测膀胱颈以下梗阻的能力。
共有65名有泌尿系统症状的男性接受了膀胱重量的超声测量和压力 - 流率研究。假设膀胱为球体，根据超声测量的膀胱壁厚度和膀胱内体积计算超声估算的膀胱重量。
超声估算的膀胱重量与艾布拉姆斯 - 格里菲斯数、尿道阻力因子及谢弗梗阻分级显著相关（p < 0.0001）。超声估算膀胱重量的截断值为35克时，对膀胱颈以下梗阻的诊断准确率为86.2%（65例中的56例），假阳性率和假阴性率分别为12.1%（33例中的4例）和15.6%（32例中的5例）。
超声估算膀胱重量可在床边无创测量，有望成为膀胱颈以下梗阻的可靠预测指标。
