Andersen J T, Bourne R B, Bradley W E
J Urol. 1976 Nov;116(5):622-5. doi: 10.1016/s0022-5347(17)58938-7.
Combined electromyographic and gas urethral pressure profilometry was done on 10 consecutive patients before and 3 months after transurethral resection of the prostate. A significant reduction was found postoperatively in the functional urethral length, whereas the maximum urethral closure pressure remained unchanged. Increase in urethral resistance in prostatic obstruction of the posterior urethra was related to the increase in the functional length of the posterior urethra rather than to mechanical occlusion of the urethral lumen. Periurethral striated muscle activity was recorded from the membranous urethra to the urethrovesical junction with the maximal activity located in the membranous urethra. Marked striated muscle activity also was found consistently at the bladder neck.
对10例连续患者在经尿道前列腺切除术前及术后3个月进行了联合肌电图和气体尿道压力测定。术后功能性尿道长度显著缩短，而最大尿道闭合压保持不变。后尿道前列腺梗阻时尿道阻力增加与后尿道功能长度增加有关，而非尿道腔的机械性阻塞。从膜部尿道至尿道膀胱交界处记录到尿道周围横纹肌活动，最大活动位于膜部尿道。在膀胱颈部也始终发现明显的横纹肌活动。
