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Subcutaneous ureteral replacement: a canine model

A Greenstein1, W W Koontz

  • 1Department of Urology, Tel Aviv-Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Israel. surge04@ccsg.tau.ac.il

Journal of Investigative Surgery : the Official Journal of the Academy of Surgical Research
|July 11, 1998
PubMed
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Correction.

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See all related articles

Researchers developed a canine model for subcutaneous ureteral replacement using nephrostomy and cystostomy tubes. This animal model will help investigate challenges in urine diversion and ureteral reconstruction for human patients.

Area of Science:

  • Urology
  • Surgical Innovation
  • Animal Models

Background:

  • Extensive ureteral reconstruction is often needed for ureteral diseases.
  • Not all patients are candidates for reconstructive surgery, necessitating alternative urine diversion methods.
  • Subcutaneous ureteral replacement using tubes is a viable option for select patients.

Purpose of the Study:

  • To establish a reproducible canine model for subcutaneous ureteral replacement.
  • To provide a platform for investigating issues related to subcutaneous ureteral replacement, such as material selection, timing, encrustation, reflux, and renal function.

Main Methods:

  • A subcutaneous tunnel was created between nephrostomy and cystostomy incisions in 6 dogs.
  • Pigtail nephrostomy and cystostomy tubes were inserted and joined under the skin.

Related Experiment Videos

  • The technique involved creating a subcutaneous tract and tunneling the nephrostomy tube to the cystostomy site.

    • Main Results:

    • The surgical technique successfully established subcutaneous ureteral replacement in dogs.
    • Postoperative intravenous urography in 4 dogs showed no renal function deterioration.
    • Some degree of hydronephrosis was observed in the dogs studied.

    Conclusions:

    • A reproducible canine model for subcutaneous ureteral replacement using nephrostomy and cystostomy tubes was successfully established.
    • This animal model can facilitate further research into the challenges of subcutaneous ureteral replacement in humans.
    • The model may aid in addressing critical questions regarding materials, timing, complications, and functional outcomes.