The physiologic effects of ductal obstruction resulting from vasectomy include dilation of the proximal or testicular end of the vas deferens. In the presence of normal spermatogenesis and without secondary epididymal obstruction, the diameter of the obstructed testicular end of the vas deferens can reach 1.0 mm. In comparison, the unobstructed abdominal segment maintains a diameter of 0.3 mm. Vasal reconstruction following vasectomy, therefore, involves the anastomosis of structures of widely differing dimensions.
KeywordsPatency Rate Motile Sperm Late Failure Suture Placement Patent Lumen
Unable to display preview. Download preview PDF.
- 2.Goldstein M: New tests in the evaluation of male infertility. In AUA Update Series, vol 3. Edited by Ball TP. Houston: AUA Office of Education; 1984:1–8.Google Scholar
- 9.Fuchs EF: Vasovasostomy. In Current Therapy in Genitourinary Therapy. Edited by Resnick MI, Kursh E. Philadelphia: BC Decker; 1987:314–318.Google Scholar
- 11.Fazeli-Matin S, Morrison G, Goldstein M: What is the pregnancy rate in vasovasostomy and varicocelectomy patients who are “lost to follow-up?” [abstract]. J Urol 1994, 151(suppl):303A.Google Scholar