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  • Title: Relationship of follicle number, serum estradiol level, and other factors to clinical pregnancy rate in gonadotropin-induced intrauterine insemination cycles.
    Author: Ozçakir HT, Göker EN, Terek MC, Adakan S, Ulukus M, Levi R, Tavmergen E.
    Journal: Arch Gynecol Obstet; 2002 Jan; 266(1):18-20. PubMed ID: 11998958.
    Abstract:
    OBJECTIVE: To determine the characteristics associated with clinical pregnancy rate after gonadotropin-induced intrauterine insemination cycles in patients without male or tubal factor infertility. MATERIALS AND METHODS: One hundred and eighty patients undergoing controlled ovarian hyperstimulation followed by intrauterine insemination were included in the study retrospectively. The patients' files were retrospectively evaluated with respect to age, number of follicles, endometrial thickness and serum hormone levels at baseline and at the day of human chorionic gonadotropin (hCG) administration. The patients with male or unilateral tubal factor infertility were excluded from the study. RESULTS: The serum estradiol level at the day of hCG administration was not correlated with the clinical pregnancy rate (r=-0.05, p=0.481). The number of follicles was not correlated with the clinical pregnancy rate (r=-0.09, p=0.209). There was no significant difference between the clinically pregnants (n=32) and not pregnants (n=148) regarding the mean age, baseline serum levels of luteinizing hormone (LH) and estradiol, serum estradiol and LH levels at the day of hCG administration and endometrial thickness (p>0.05). Although not statistically significant, a pregnancy rate of 14.2% with less than 3 follicles > or = 18 mm is present compared to a pregnancy rate of 27.5% with at least 3 follicles > or = 18 mm and 24% with > or = 4 follicles > or = 18 mm. CONCLUSION: The clinical pregnancy rate does not seem to be affected with the number of follicles present at the time of intrauterine insemination or the serum estradiol level at the day of hCG administration in a controlled ovarian hyperstimulation cycle in non-andrologic and non-peritubal factor infertility; however, there is a clear trend towards higher pregnancy rates with higher number of follicles.
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