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[Ensuring ureter viability: experimental study].

M Hahn, J Vrubel, V Koĉandrle

    Zeitschrift Fur Urologie Und Nephrologie
    |December 1, 1979
    PubMed
    Summary
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    Preserving peripelvic and periureteral tissue is not crucial for ureter blood supply. Ureter length can be shortened for ureteroneocystostomy (UNC) without compromising vascularity.

    Area of Science:

    • Urology
    • Surgical Anatomy
    • Vascular Biology

    Context:

    • The vascular supply of the ureter is critical for reconstructive procedures.
    • Understanding ureteral blood supply is essential for preventing complications like necrosis.
    • Current surgical techniques may involve varying amounts of periureteral tissue removal.

    Purpose:

    • To investigate the significance of peripelvic and periureteral tissue for ureteral blood supply.
    • To determine the optimal length of donor ureters for ureteroneocystostomy (UNC).
    • To assess the impact of preservation methods on ureteral vascularity.

    Summary:

    • Experiments on dogs demonstrated that remaining peripelvic and periureteral tissue is not decisive for ureteral blood supply.
    • Removal of 2-4 cm of periureteral tissue for creating a tunnel did not result in localized necrosis.

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  • The upper half of donor ureters consistently showed adequate blood supply, supporting shortening for UNC.
  • Hypothermia and machine perfusion did not negatively affect ureteral blood supply.

    • Impact:

    • Findings support the clinical practice of removing periureteral tissue during ureter reimplantation without compromising ureteral viability.
    • Recommendations for shortening donor ureters for UNC can optimize surgical outcomes and reduce tissue handling.
    • The study validates the safety of hypothermic and machine perfusion preservation methods for ureteral grafts.