Medically the evaluation by Valinda Riggins Nwadike, MD, MPH — composed by Zawn Villines top top October 21, 2019

A vasectomy is a surgical procedure that cut or block the vas deferens, the 2 tubes that lug sperm from the testicles come the urethra. The procedure stops sperm from acquiring into the semen in stimulate to avoid pregnancy.

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After a vasectomy, one individual can still ejaculate and also produce sperm, yet the human body reabsorbs the sperm, and it never reaches the semen.

A vasectomy is a very effective type of male birth control, but is the still possible for a companion to obtain pregnant?

In this article, we explore the reasons why pregnancy may still happen after a vasectomy.

We likewise look in ~ the reversal choices for achieving pregnancy and also discuss sperm aspiration, a procedure that have the right to lead to pregnant if world use it with in vitro fertilization (IVF).


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Share top top PinterestThere is a really low opportunity of pregnancy 3 months after a vasectomy.
The likelihood of gaining pregnant after ~ a vasectomy is nearly zero as soon as couples wait at the very least 3 months complying with the procedure to have sex without bear control.

After a vasectomy, a medical professional will check the semen to assess whether there are sperm present. To reduce the risk of pregnancy, the person who has the vasectomy and their partner have to use a back-up contraceptive an approach until a doctor offers them the go-ahead.

If human being have sex without contraception too soon after a vasectomy, there is a risk that part sperm might remain in the semen. If so, this sperm might fertilize one egg, resulting in pregnancy.


1. Having actually sex too soon

Vasectomy failures space most typical in the months complying with surgery if a pair engages in sex too quickly without utilizing contraception.

The sperm life bicycle is around 3 months. This method that sperm may have the ability to get right into semen for several months adhering to the procedure. The much longer the time-lapse since the vasectomy, the less likely that this will happen.

Around 1–2 the end of every 1,000 females whose partners have a vasectomy obtain pregnant in the year complying with the vasectomy.

2. Vasectomy procedure did no work

Sometimes the vasectomy procedure go not fully block the vas deferens. As soon as this happens, a doctor might recommend redoing the procedure, periodically using a different vasectomy method.

In most cases, a semen analysis that a doctor does ~ the procedure will reveal that the did no work.

3. Recanalization


It is also feasible for a vasectomy come fail weeks, months, or also years ~ the procedure with a procedure called recanalization.

Recanalization happens when the vas deferens grow earlier to produce a new connection, leading to the vasectomy to reverse itself.

Most instances of recanalization take place within 12 weeks of the procedure. When recanalization happens years later, it might go undetected till a person’s partner gets pregnant.

The hazard of recanalization may increase if:

a human chooses one open-ended vasectomy, i beg your pardon closes only one end of the vas deferenssperm tissue is existing at the vasectomy site

Various researches estimate the the early on failure rate for vasectomies varieties from between 0.3% and 9% of all procedures.

Late failure is much less common, v an approximated failure rate varying from between 0.04 to 0.08%.


Most vasectomies are reversible. In between 3–6% of males who have actually vasectomies eventually have a reversal.

The actions for reversal are:

Vasovasostomy: This procedure is wherein a medical professional rejoins the reduced or clipped ends of the vas deferens. This procedure is supplied in most cases and is less technically challenging, and therefore has greater success rates.Vasoepididymostomy: An alternative procedure, whereby a medical professional joins one finish of the vas deferens to the epididymis, the tube the stores sperm and transports that from the testes. This procedure is more technically challenging, and also so has actually a reduced success rate.

Reversal success in achieve pregnancy

A variety of factors affect the success the a reversal in afford pregnancy, including:

experience and also skill that the surgeongood sperm count of the individualoverall health and wellness of both partnersintercourse timingthe woman’s fertility

If the an initial reversal fails, a human may choose to pursue a second reversal.


IVF is a procedure that fertilizes one egg outside of the woman’s body. A physician then implants the egg right into the woman’s uterus in the hope of pregnant occurring.

People that have had vasectomies can still impregnate their partners with IVF, also without a vasectomy reversal.

To attain this, a human undergoes a sperm aspiration under anesthetic. Throughout this procedure, a doctor directly retrieves sperm native the testis or epididymis using a needle.

As long as a who sperm are healthy and balanced at the moment of sperm aspiration, their possibilities of impregnating their companion through IVF room the very same as they would certainly be if they had actually not had actually a vasectomy. So, for civilization whose partners have actually fertility concerns or who space not good candidates because that reversal, sperm aspiration may be the ideal option for having a child.


People v concerns around overall success rates or who think they may wish come reverse their vasectomies should comment on all options before follow a vasectomy.

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There is no guarantee that a vasectomy will work-related in every people, nor the a vasectomy reversal will certainly make a human being fertile. Civilization should, therefore, sweet the risks and benefits v their partners and doctors.


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Medically reviewed by Valinda Riggins Nwadike, MD, MPH — created by Zawn Villines top top October 21, 2019