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Nd:YAG coagulation of the verumontanum: An endoscopic attempt at sterilization
Author(s) -
Gilbert Peter T. O.,
Kramer Elke,
Beckert Rainer,
Treiber Uwe
Publication year - 1990
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.1900100214
Subject(s) - sterilization (economics) , electrocoagulation , medicine , surgery , sulfanilamide , urethral stricture , prostate , fistula , saline , urethra , urology , anesthesia , chemistry , biochemistry , cancer , monetary economics , economics , foreign exchange market , foreign exchange
In order to develop a new and less invasive method of sterilization in men we performed photocoagulation of the verumontanum in 10 rams, using a Nd:YAG laser, wavelength 1,060 nm. Under general anesthesia a perineal urethro‐cutaneous fistula was achieved, and, by means of a 16F laser‐endoscope, transure‐thral coagulation of the ejaculatory ducts, located in the verumontanum, was carried out, using pulses of 1.5 sec in duration and 20‐30 W in power. The animals were killed at different postoperative time intervals, ranging from 1 day to 8 weeks. Injection of methylene‐blue into the testicular ducts of the resected prostate‐bladder specimen and histologic studies of the coagulated tissue revealed that complete bilateral occlusion of the ejaculatory ducts had been achieved in 4 rams. Failures were due to over‐extended irradiation of the verumontanum. Except for urinary tract infections occurring in 4 animals, no serious complications were encountered. Further investigations are still necessary to determine the role of lasers in male sterilization.