The unintubated ureterotomy endourologically revisited

The duration of stenting after endoureterotomy is a controversial issue. An even more basic question, however, is whether stent placement is needed at all. We performed a porcine study to address this question. A unilateral midureteral stricture was created in 20 minipigs. Six weeks later, 15 pigs u...

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Bibliographic Details
Published inThe Journal of urology Vol. 156; no. 3; p. 1160
Main Authors Gardner, S M, Wolf, Jr, J S, Nakada, S Y, Moon, Y T, Figenshau, R S, Pearle, M S, Soble, J J, Humphrey, P A, Clayman, R V
Format Journal Article
LanguageEnglish
Published United States 01.09.1996
Subjects
Animals
Female
Stents
Swine
Swine, Miniature
Ureter - pathology
Ureter - surgery
Ureteral Obstruction - surgery
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Summary:The duration of stenting after endoureterotomy is a controversial issue. An even more basic question, however, is whether stent placement is needed at all. We performed a porcine study to address this question. A unilateral midureteral stricture was created in 20 minipigs. Six weeks later, 15 pigs underwent endoureterotomy. In 10 animals, a 7F ureteral stent was placed for 1 week. Five pigs remained unstented. Three months later, all 20 ureters were studied radiographically and were harvested. Three of 5 control animals and 2 of 10 stented animals has strictures. In the unstented study group, all 5 animals had a nonobstructing dilation at the site of endoureterotomy. This was corroborated by a normal furosemide washout renal scan in all 3 animals so tested. The result of unstented endoureterotomy in the porcine model suggests that, after endoureterotomy of secondary midureteral strictures, stenting may be unnecessary.
ISSN:0022-5347
DOI:10.1016/S0022-5347(01)65742-2