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I am a 26-year-old female who is dating a 42-year-old male. He told me after we had unprotected sex that I couldn’t get pregnant because he’s “fixed”. After 2 months of not using any form of protection, I recently found out I’m pregnant. There is no way on this green earth that anyone else could be the father.
If vasectomies are 99.7 percent effective, why are there so many posts about after vasectomy pregnancies?Dr. Edward Karpman
Vasectomy is a very effective form of contraception, and the success of the procedure is over 99%. Most of the vasectomy failures occur in the early postoperative period and are usually related to incomplete clearance of sperm from the reproductive tract prior to having unprotected intercourse. Late vasectomy failure after documented clearance of sperm from the ejaculate is extremely rare, especially if a repeat semen analysis after initiating the pregnancy still shows the absence of sperm.
A certain type of vasectomy procedure, the ligation band technique (Vasclip), has recently been shown to have an unacceptably high rate (25%) of failure. Every male patient who has undergone this type of vasectomy procedure should have a semen analysis performed and consider the conversion of the vasectomy to one of the more standard procedures.
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