: The patients will have the semen analysis to confirm the success of the procedure three months after the vasectomy. If motile sperm is present 12 weeks after the vasectomy, it indicates that recanalization has occurred or that there was a technical failure in vas occlusion.
However, the vasectomy should not be repeated immediately if motile sperm is found in the semen analysis prior to six months after the vasectomy. Additional semen analysis should be performed at intervals of four weeks for up to six months after the vasectomy for further evaluation.
Approximately 30% to 50% of men with recanalization eventually achieve azoospermia or rare nonmotile sperm over a period of six months after the vasectomy due to fibrosis of the vas and occlusion of the recanalization. Therefore, the decision to repeat the vasectomy should not rely on a single semen analysis. A repeat vasectomy should be done if the number of motile sperm increases in the subsequent semen analyses or if motile sperm persists for six months after vasectomy.
Motile sperm may represent a risk of pregnancy and indicate the need for continued use of another contraceptive method.
One Stop Medical Center in Minnesota reported a zero failure rate in about 600 vasectomy cases, most of which were performed in the past few years. All vasectomies were performed with no scalpel, no needle, and no suture techniques.
