Anikwe R M
J Urol. 1978 May;119(5):643-8. doi: 10.1016/s0022-5347(17)57578-3.
Observations on urethral resistance during micturition in non-obstructed men and in patients with bladder outlet obstruction owing to benign prostatic hypertrophy are presented. The "Urethroresistance", a new instrument, was used for the direct recording of urethral resistance. The upper limit for the minimum urethral resistance during micturition for normal non-obstructed men was 0.5 units. Two patterns of urethral resistance were observed solely in non-obstructed subjects and 3 other patterns, which were found solely in patients with a moderate or severe degree of bladder outlet obstruction, were shown to be characteristic of bladder outlet obstruction. While direct recording of urethral resistance is a better test for bladder outlet obstruction than the recording of urinary flow rate the recording of urinary flow is a simple urodynamic test, which remains a useful screening test for bladder outlet obstruction. With the exception of severe obstructive symptoms none of the other clinical methods for the assessment of bladder outlet obstruction--the size of the prostate gland, the volume of post-micturition residual urine and the degree of bladder trabeculation--is reliable to determine the degree of bladder outlet obstruction.
本文介绍了对非梗阻性男性及因良性前列腺增生导致膀胱出口梗阻患者排尿时尿道阻力的观察结果。使用一种名为“尿道阻力仪”的新仪器直接记录尿道阻力。正常非梗阻性男性排尿时最小尿道阻力的上限为0.5单位。仅在非梗阻性受试者中观察到两种尿道阻力模式，另外三种模式仅在中度或重度膀胱出口梗阻患者中发现，这些模式被证明是膀胱出口梗阻的特征。虽然直接记录尿道阻力比记录尿流率更能检测膀胱出口梗阻，但记录尿流是一种简单的尿动力学检查，仍然是检测膀胱出口梗阻的有用筛查方法。除了严重的梗阻症状外，其他评估膀胱出口梗阻的临床方法，如前列腺大小、排尿后残余尿量及膀胱小梁形成程度，均无法可靠地确定膀胱出口梗阻的程度。
