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Determination of intestinal viability.

E F Wolfman1

  • 1University of California, Davis Medical Center.

The Veterinary Clinics of North America. Equine Practice
|August 1, 1989
PubMed
Summary
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Veterinary surgeons use sodium fluorescein to assess intestinal viability during surgery. While generally reliable, its accuracy in horses requires further investigation to ensure optimal surgical outcomes.

Area of Science:

  • Veterinary Surgery
  • Equine Surgery
  • Surgical Diagnostics

Background:

  • Intestinal ischemia is a common surgical complication in horses, often caused by conditions like intussusception, volvulus, obstructions, and incarcerated hernias.
  • Accurate intraoperative assessment of bowel viability is crucial after restoring circulation to prevent leaving nonviable tissue or resecting healthy intestine.
  • Sodium fluorescein is a widely used, safe, and inexpensive method for predicting intestinal nonviability in humans and various animal models.

Purpose of the Study:

  • To evaluate the effectiveness of the sodium fluorescein technique in predicting intraoperative intestinal viability in horses.
  • To determine if fluorescein-predicted viability correlates with normal intestinal function post-restoration of blood flow.

Main Methods:

Related Experiment Videos

  • Intravenous injection of sodium fluorescein in horses undergoing surgery for intestinal ischemia.
  • Intraoperative assessment of intestinal viability using a long-wave ultraviolet lamp to observe fluorescein's distribution.
  • Comparison of fluorescein-based viability predictions with actual surgical outcomes and postoperative function.

    • Main Results:

    • The sodium fluorescein technique is generally considered ideal due to its safety, low cost, and ease of use.
    • Reliance on fluorescein seldom results in leaving nonviable bowel in situ and minimizes unnecessary resection of viable intestine.
    • A recent report questions the accuracy of fluorescein in predicting viability and nonviability specifically in horses.

    Conclusions:

    • Sodium fluorescein is a valuable tool for assessing intestinal viability in equine surgery, minimizing complications.
    • Further research is necessary to confirm or refute the accuracy of the fluorescein technique in horses and its correlation with normal intestinal function.