RISKS OF VASECTOMY REVERSAL
Vasectomy reversal is comparable in safety to vasectomy. The risks of vasectomy are outlined below from most common to least common. The main risk of vasectomy reversal is that pregnancy may not occur. The least common risks are severe infection or chronic pain as a result of the procedure.
Failure to achieve pregnancy
The main risk of vasectomy reversal is future pregnancy may never happen naturally.
The vasectomy reversal may be perfectly performed, without any complications, and sperm may not reappear in the ejaculate or return in numbers inadequate to cause pregnancy.
Preexisting male infertility
Many men will have a vasectomy before having children or a small number of children. Some of these men may have had unrecognized male infertility or sub-optimal male fertility before their vasectomy. When these men have vasectomy reversal the factors contributing to male infertility will continue to be present.
Vasectomy induced epididymal dysfunction
The most common reason this can occur is because the epididymis in some men may become dysfunctional after a vasectomy. The epididymis is thought to become dysfunctional because of increased pressure caused by the continual production of sperm after the vasectomy that have nowhere to exit. This causes increased pressure, which can cause gradual dysfunction of the epididymis. The epididymis may cease producing sperm or produce dysfunctional sperm.