Morishita H, Nakajima Y, Saito R, Takeda M, Torii T, Sato S
Department of Urology, Nagaoka Red Cross Hospital, Japan.
Eur Urol. 1989;16(5):340-2. doi: 10.1159/000471612.
We performed transurethral resection for prostatic hypertrophy on 128 patients, and encountered 6 causes of postoperative urethral stricture. As they occurred during a short period, we investigated the causes. An electrical check revealed electrical resistance of more than 10,000 omega in the electric cord of a resectoscope. When an unused loop was connected with three used cords (No. 1, 2 and 3) and a new cord, the resistances were 2,000, 5,000, 0.9 and 0.5 omega, respectively. Moreover, the respective resistances were 15,000, 1,150,000, 1.3 and 0.9 omega when a used loop was tested. These findings suggested that the excessive resistance resulted from the use of a worn cord and that the used loop caused the postoperative urethral stricture.
我们对128例前列腺增生患者实施了经尿道前列腺切除术，其中有6例出现术后尿道狭窄。由于这些情况在短时间内发生，我们对其原因进行了调查。电气检查发现，电切镜的电线电阻超过10000欧姆。当一个未使用的环与三根使用过的电线（1号、2号和3号）以及一根新电线相连时，电阻分别为2000、5000、0.9和0.5欧姆。此外，当测试一个使用过的环时，电阻分别为15000、1150000、1.3和0.9欧姆。这些发现表明，过高的电阻是由于使用了磨损的电线所致，而使用过的环导致了术后尿道狭窄。
