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Journal of Andrology, Vol 19, Issue 5 603-607, Copyright © 1998 by The American Society of Andrology

JOURNAL ARTICLE

Two-day IUI treatment cycles are more successful than one-day IUI cycles when using frozen-thawed donor sperm

M. Matilsky, Y. Geslevich, M. Ben-Ami, I. Ben-Shlomo, T. Weiner-Megnagi and E. Shalev
Department of Obstetrics and Gynecology, Haemek Medical Center, Afula, Israel.

The difference in pregnancy rates following intrauterine insemination (IUI) for 1 vs. 2 days in the periovulatory period has been reported as either inconsequential or favoring the use of two consecutive inseminations, 24 hours apart. Our study compared the monthly fecundity and cumulative probability of pregnancy in a large group of women (n = 123) undergoing controlled ovarian hyperstimulation and 1- or 2-day inseminations with donor sperm prepared from frozen-thawed samples. All patients underwent controlled ovarian hyperstimulation employing either clomiphene citrate in 217 cycles or human menopausal gonadotropin in 185 cycles. The choice of single or double insemination was decided by the day of the week each patient received human chorionic gonadotropin for ovulation induction. Approximately 80% of all the patients underwent both single and double insemination treatments during the 2.5-year study period. Ninety-three patients received single inseminations in 180 cycles, whereas 103 patients received double inseminations in 222 cycles. Nine clinical pregnancies were achieved in the 1-day group (5% per cycle, 9.7% per patient), while 39 pregnancies occurred in the 2-day group (17.9% per cycle, 37.9% per patient). Two and five spontaneous abortions occurred in the 1- and 2-day groups, yielding take-home baby rates of 3.9% per cycle (7.5% per patient) and 15.3% per cycle (33.0% per patient), respectively. The cumulative probability of conception over 15 cycles of treatment was consistently twice as high or higher for the 2-day group. The results of this study support the use of 2-day IUI treatment cycles when using frozen-thawed donor sperm.


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Copyright © 1998 by The American Society of Andrology.