Urine-compatible polymer for long-term ureteral stenting

J. F. Cardella, W. R. Castaneda-Zuniga, D. W. Hunter, J. C. Hulbert, K. Amplatz

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Internal double-J ureteral stents were designed from a urine-compatible polymer (C-Flex), and 35 stents were placed in patients. The overall patency rate for the stents was 80%, with most stent failures occurring before 2 months; the follow-up period ranged from 2 to 16 months, with a mean follow-up for all stents of 5.0 months. Stents were considered patent at last follow-up only if they had been in place for at least 2 months. No migration or fracture of the stents occurred. Physical properties of urine-exposed stents were compared with those of virgin tubing and tubing exposed for 1 year to shelf conditions. Stent patency was otpimized by (a) increasing urine flow by increasing the patient's voluntary oral intake, (b) administering prophylactic oral antibiotics, and (c) avoiding placement of stents into grossly bloody or infected collecting systems.

Original languageEnglish (US)
Pages (from-to)313-318
Number of pages6
Issue number2
StatePublished - Jan 1 1986

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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