Electrical resistance of appliances as a cause of urethral stricture following transurethral resection of prostate.
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.
Department of Urology, Nagaoka Red Cross Hospital, Japan.
H
H
Morishita
Y
Y
Nakajima
R
R
Saito
M
M
Takeda
T
T
Torii
S
S
Sato
D004553:Electric Conductivity; D004598:Electrosurgery / Q000295:instrumentation*; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000209:etiology*; D011468:Prostatectomy; D013525:Surgical Instruments; D014525:Urethral Stricture / Q000209:etiology*