Editing Vasectomy (section)

== '''Post-op confirmation of sterility:''' ==

* Semenalysis at three-month mark (should've had at least 20 ejaculates since vasectomy)
** >80% are azoospermic after 3/12 and 20 ejaculations
** Time to azoospermia decreases with increasing ejaculations and increases with age
* Azoospermia is definitive evidence of infertility
* Motile sperm at three months: repeat in another 1-2 months
** If motile sperm are still present, and it's been three months, and >20 ejaculations, vasectomy is considered a failure. Potentially needs repeat.
* Non-motile sperm is a less definitive sign of infertility - may reflect death of recently motile sperm due to delays or problems in lab - needs to be examined in less than 4 hours from production. Repeat testing in another 1-2 months may show more non-motile sperm, or may show azoospermia. 
** Persistent rare non-motile sperm is probably clinically insignificant, and according to UTD these men can be given cautious assurance of success
** British Andrology Society suggests if rare non-motile sperm are still present after 7 months, patients can be given clearance
** American Urologic Society says you can clear patients on one sample, as long as it was fresh and <100,000 non-motile sperm per mL based on examination of at least 50 HPFs

[[Category:Urology]]