Abstract
OBJECTIVE:To evaluate the effect of normal saline lavage of the distal vas deferens ampulla in patients undergoing vasectomy on the time to achieve azoospermia.METHODS:A prospective randomized study of 60 men divided into two groups, group lavage (GL, n=30) in which distal vas deferens ampulla lavage was performed with 10 ml of normal saline during the vasectomy, and group without lavage (GWL, n=30) in which control patients received only a vasectomy. The patients provided sperm for semen analysis at the 5th, 10th, 15th, 20th and 25th ejaculations.RESULTS:Fifteen participants in GL and 16 in GWL, for a total of 31 patients, were excluded due to not completing the control spermiogram. The tests carried out at the five ejaculations showed immobile spermatozoa in 40 and 85.71%, 66.67 and 78.57%, 93.33 and 85.71%, 86.67 and 71.43%, and 93.33 and 85.71% of participants in GL and GWL, respectively.CONCLUSION:Vas deferens duct lavage with 10 ml of normal saline during vasectomy did not decrease the time required to achieve postoperative azoospermia.
Highlights
Vasectomy is the most widely used contraception method owing to its effectiveness, low complexity and cost-effectiveness
In every spermiogram analyzed from the 5th ejaculation following vasectomy with or without irrigation onward, either azoospermia or the presence of immobile spermatozoa was recorded
There was a significant difference between groups for the 5th ejaculation only, for which 12 patients in group without lavage (GWL) and six in group with lavage (GL) showed azoospermia (p=0.011)
Summary
Vasectomy is the most widely used contraception method owing to its effectiveness, low complexity and cost-effectiveness. Vasectomy accounts for 5% to 10% of contraceptive use among all available methods [1,2,3]. Despite the effectiveness of vasectomy, the desired endpoint of azoospermia and consequent infertility is not achieved immediately. These events occur after a period of 90 to 120 days in most men due to residual spermatozoa located distally to the ligature [4,6].
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