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Vasography: experimental study.

C A Levi d'Ancona1, N R Netto, A C Filho

  • 1Department of Surgery, University of Campinas, Medical School, UNICAMP, São Paulo, Brazil.

International Urology and Nephrology
|January 1, 1989
PubMed
Summary
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Needle puncture during vasography does not cause vas deferens stricture. Radiological contrast material (Hypaque) is linked to 5% of strictures, while saline washes offer no benefit in preventing obstruction.

Area of Science:

  • Urology
  • Radiology
  • Surgical Complications

Background:

  • Vasography, a procedure involving imaging of the vas deferens, can potentially lead to obstruction.
  • Suspected causes of obstruction include trauma from needle puncture and the use of radiological contrast agents.

Purpose of the Study:

  • To investigate the causative factors of vas deferens stricture following vasography.
  • To differentiate the roles of needle puncture and contrast material in causing post-vasography obstruction.

Main Methods:

  • An experimental study was conducted using Wistar rats.
  • Rats were divided into four groups: control, saline injection, hypaque injection, and hypaque plus saline solution.
  • Vas deferens were examined for stricture formation.

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Main Results:

  • Needle puncture at the injection site was not found to be a cause of vas deferens stricture.
  • Hypaque, a radiological contrast material, was identified as responsible for approximately 5% of strictures.
  • Washing the vas deferens with a saline solution did not demonstrate any preventative benefit against stricture formation.

Conclusions:

  • The primary cause of vas deferens stricture after vasography is not needle trauma.
  • Radiological contrast agents like Hypaque contribute minimally to stricture formation.
  • Saline irrigation is ineffective in mitigating the risk of obstruction post-vasography.