Pooled sequential ejaculates: A way to increase the total number of motile sperm from oligozoospermic men

I. Tur-Kaspa*, A. Dudkiewicz, E. Confino, N. Gleicher

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

We investigated the yield of total number of motile spermatozoa from oligozoospermic men by pooling two closely spaced sequential ejaculates. Semen characteristics were compared between sequential ejaculates (within a period of 1 to 4 hours) of 18 oligozoospermic males (sperm concentration <20 X 106/mL and total sperm count <40 X 106 in the ejaculate) and a control group of 16 normozoospermic men. Whereas the median total number of motile sperm of normozoospermic males significantly decreased from 70 X 106 in the first ejaculate to 23 X 106 in the second sequential ejaculate, such a decrease was not detected in oligozoospermic males, 3.6 X 106 and 3.1 X 106, respectively. The percent of normozoospermic and oligozoospermic men who demonstrated a decreased (<50%), a comparable (50% to 150%), or an increased (>150%) total motile sperm count in the second ejaculate in comparison with the first ejaculate were 69%, 31%, and 0 versus 39%, 28%, and 33%, respectively. Consequently, pooling of two sequential ejaculates significantly increased the median total number of motile sperm from normozoospermic males by 144% and from oligozoospermic males by 329%, (to 10.2 X 106). We suggest that pooling of two sequential ejaculates from oligozoospermic males is a simple and cost effective method to increase significantly the total number of motile sperm for intrauterine insemination, in vitro fertilization, gamete intrafallopian transfer, or semen cryopreservation.

Original languageEnglish (US)
Pages (from-to)906-909
Number of pages4
JournalFertility and Sterility
Volume54
Issue number5
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynecology

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