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ORIGINAL ARTICLE
Year : 2005  |  Volume : 21  |  Issue : 2  |  Page : 112-115

Predictors of patency after two-stitch invagination vaso-epididymal anastomosis for idiopathic obstructive azoospermia


Department of Urology, All India Institute of Medical Sciences, New Delhi, India

Correspondence Address:
R Kumar
Assistant Professor, Department of Urology, All India Institute of Medical Sciences,New Delhi - 110029
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0970-1591.19633

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Objectives: Anastomotic patency with return of sperm in the ejaculate following microsurgical vasoepididymostomy (VEA) is not universal and may be delayed. The ability to predict the result of VEA based on preoperative or intra-operative parameters would enable the surgeon to offer the best treatment to the infertile couple. We used the two-stitch invagination technique of VEA in patients of idiopathic obstructive azoospermia and prospectively analyzed factors that could predict a patent anastomosis. While such studies have previously been done for patients undergoing VEA for secondary infertility following a vasectomy, to the best of our knowledge this is the first study analyzing these parameters for patients with primary infertility and idiopathic obstruction. Methods and materials: Over a 2-year period, 29 men underwent the 2-suture invagination VEA for idiopathic obstructive azoospermia. Twenty-four patients provided at least one postoperative semen sample. Preoperative and intra-operative parameters were compared between patients with a patent anastomosis with sperm in ejaculate (n = 12) and those with no sperm in the ejaculate (n = 12) using the t-test, Fisher's exact test or chi-square test, as appropriate and a multivariate statistical analysis to determine any significant difference. Results: The mean follow up of the 24 patients was 7.6 months (2-30 months). A significantly greater number of patients with patent anastomosis had motile epididymal sperms (P = 0.034) and higher surgeon's technical satisfaction with the procedure (P = 0.034). However, this difference was seen only on a univariate analysis and did not persist when a multivariate analysis was used. Conclusions: The presence of motile sperms in the epididymal fluid and a high level of technical satisfaction with the anastomosis may indicate a higher likelihood of success following a vaso-epididymal anastomosis for idiopathic obstruction. However, these parameters are not enough to prognosticate the outcome of surgery and advise early in vitro fertilization.


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