Human sperm function in the ejaculate following vasectomy

Fertil Steril. 1984 Dec;42(6):895-8. doi: 10.1016/s0015-0282(16)48262-2.


Semen specimens were obtained for analysis from nine men immediately before vasectomy and 3 days following the vasectomy procedure. After vasectomy there was a significant decrease in seminal sperm concentration, percentage of sperm motility, and mean swimming speed. In seven of nine cases the spermatozoa did not survive overnight incubation in capacitation media, and in no case was penetration of zonafree hamster oocytes observed 3 days after vasectomy.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Cricetinae
  • Ejaculation
  • Female
  • Humans
  • Male
  • Oocytes
  • Sperm Count
  • Sperm Motility
  • Sperm-Ovum Interactions
  • Spermatozoa / physiology*
  • Time Factors
  • Vasectomy*