Document Detail

Polyurethane internal ureteral stents in treatment of stone patients: morbidity related to indwelling times.
MedLine Citation:
PMID:  1942324     Owner:  NLM     Status:  MEDLINE    
The morbidity and complications associated with use of internal polyurethane ureteral stents in a series of 290 stone patients treated endourologically or with extracorporeal shock wave lithotripsy were retrospectively reviewed. Of the 299 stents retrieved 141 were also tested for patency to relate the rate of luminal blockage with stent caliber, indwelling time and clinical evidence of obstruction in the stented tract. Stent indwelling times ranged from a few days to 18 months: 11.3% were indwelling longer than 6 months and 1.9% were lost to followup. Incrustation occurred in 9.2% of the stents retrieved before 6 weeks, 47.5% indwelling 6 to 12 weeks and 76.3% thereafter. In 19 cases over-all (6.4%) an auxiliary procedure was required to decrease incrusted stone burden and enable stent retrieval. Other complications included stent migration (3.7%), infection (6.7%) and breakage (0.3%). Despite a 30% rate of luminal blockage in stents retrieved after indwelling times up to 3 months, the incidence of clinical obstruction in stented tracts up to 3 months was 4%, confirming other reports that significant urine flow occurs around rather than through hollow, vented stents. Our findings underline the importance of restricting the use of stents to stone patients who will be reliable at followup. Morbidity was minimal if stent indwelling times did not exceed 6 weeks.
S R el-Faqih; A B Shamsuddin; A Chakrabarti; R Atassi; A H Kardar; M K Osman; I Husain
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of urology     Volume:  146     ISSN:  0022-5347     ISO Abbreviation:  J. Urol.     Publication Date:  1991 Dec 
Date Detail:
Created Date:  1991-12-23     Completed Date:  1991-12-23     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0376374     Medline TA:  J Urol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1487-91     Citation Subset:  AIM; IM    
Division of Urology, College of Medicine, Riyadh, Saudi Arabia.
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MeSH Terms
Catheters, Indwelling / adverse effects*
Equipment Failure
Foreign-Body Migration
Kidney Calculi / therapy*
Prospective Studies
Retrospective Studies
Time Factors
Ureteral Calculi / therapy*
Urinary Tract Infections / etiology
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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