TY - JOUR
T1 - Comparison of sperm parameters, in vitro fertilization results, and subsequent pregnancy rates using sequential ejaculates, collected two hours apart, from oligoasthenozoospermic men
AU - Barash, A.
AU - Lurie, S.
AU - Weissman, A.
AU - Insler, V.
PY - 1995
Y1 - 1995
N2 - Objective: To evaluate the effect of second consecutive ejaculate collected 2 hours after the first one from infertile men on sperm quality and fertilization and pregnancy rates (PRs) in IVF. Design: A prospective case- control study. Setting: In vitro fertilization unit of a university hospital. Patients: Thirty-nine consecutive infertile patients with oligoasthenozoospermia scheduled for IVF-ET. Main Outcome Measures: Two consecutive ejaculates were obtained 2 hours apart and were assessed for volume, sperm count, motility, morphology, and quality of swim-up fraction. The subsequent fertilization, cleavage, and PRs (as defined by the appearance of intrauterine gestational sac) were compared between the two ejaculates. Results: In 28.2% of the individuals the semen analysis of the first ejaculate precluded proceeding with IVF. A statistically significant improvement was shown in sperm cell motility (31.9% ± 20.7% versus 15.6% ± 15.3%) and in motile count after swim-up (4.9 ± 4.5 versus 2.6 ± 3.1 x 106 sperm). No improvement could be demonstrated in sperm density or morphology. The volume of the second ejaculate was decreased significantly as compared with the first one. The fertilization rate, the cleavage rate, and PR were all increased when oocytes were exposed to sperm from the second ejaculate compared with oocytes exposed to sperm from the first ejaculate. The overall PR in our series was 25.6%. Conclusions: We suggest that in the group of infertile men with oligoasthenozoospermia, whose partners are scheduled for IVF-ET, if on the day of retrieved oocytes insemination, the ejaculate is of unacceptable quality, a second ejaculate collected 2 hours after collection of the initial ejaculate may produce a sample that exhibits improvements in both semen parameters and reproductive potential.
AB - Objective: To evaluate the effect of second consecutive ejaculate collected 2 hours after the first one from infertile men on sperm quality and fertilization and pregnancy rates (PRs) in IVF. Design: A prospective case- control study. Setting: In vitro fertilization unit of a university hospital. Patients: Thirty-nine consecutive infertile patients with oligoasthenozoospermia scheduled for IVF-ET. Main Outcome Measures: Two consecutive ejaculates were obtained 2 hours apart and were assessed for volume, sperm count, motility, morphology, and quality of swim-up fraction. The subsequent fertilization, cleavage, and PRs (as defined by the appearance of intrauterine gestational sac) were compared between the two ejaculates. Results: In 28.2% of the individuals the semen analysis of the first ejaculate precluded proceeding with IVF. A statistically significant improvement was shown in sperm cell motility (31.9% ± 20.7% versus 15.6% ± 15.3%) and in motile count after swim-up (4.9 ± 4.5 versus 2.6 ± 3.1 x 106 sperm). No improvement could be demonstrated in sperm density or morphology. The volume of the second ejaculate was decreased significantly as compared with the first one. The fertilization rate, the cleavage rate, and PR were all increased when oocytes were exposed to sperm from the second ejaculate compared with oocytes exposed to sperm from the first ejaculate. The overall PR in our series was 25.6%. Conclusions: We suggest that in the group of infertile men with oligoasthenozoospermia, whose partners are scheduled for IVF-ET, if on the day of retrieved oocytes insemination, the ejaculate is of unacceptable quality, a second ejaculate collected 2 hours after collection of the initial ejaculate may produce a sample that exhibits improvements in both semen parameters and reproductive potential.
KW - IVF
KW - Male infertility
KW - abstinence
KW - ejaculation
KW - pregnancy
KW - sperm preparation technique
UR - http://www.scopus.com/inward/record.url?scp=0028811527&partnerID=8YFLogxK
U2 - 10.1016/S0015-0282(16)57920-5
DO - 10.1016/S0015-0282(16)57920-5
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C2 - 7589619
AN - SCOPUS:0028811527
SN - 0015-0282
VL - 64
SP - 1008
EP - 1011
JO - Fertility and Sterility
JF - Fertility and Sterility
IS - 5
ER -