Hormonal changes in consecutive clomiphene citrate stimulation cycles and their effect on pregnancy rates.

Turk J Obstet Gynecol

University of Health Sciences Turkey, İstanbul Bağcılar Training and Research Hospital, Clinic of Obstetrics and Gynecology, İstanbul, Turkey.

Published: September 2022


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Article Abstract

Objective: To determine the relationship between the cumulative effect of sequential clomiphene citrate (CC) treatments in unexplained infertile women with intercycle and intracycle serum hormone changes.

Materials And Methods: Patients who received CC 50 mg in the first cycle (group I, n=34) as ovulation induction and those who received CC 50 mg in the second consecutive cycle (group II, n=18) were compared. Basal (cycle days 2-5) and trigger day (the day that recombinant human chorionic gonadotropin is given) levels of gonadotropin and steroid hormones were measured.

Results: The 17OHP increase on trigger day was found to be statistically significantly higher in group II compared to the basal day (p=0.083). The testosterone (T) response on the trigger day of the patients in group II was found to be statistically significantly higher than that in group I (p=0.023). The number of selected follicles was negatively correlated with a follicle-stimulating hormone decrease and positively correlated with an estradiol increase. Endometrial thickness was positively correlated with a luteinizing hormone increase, and cycle cancelation was positively correlated with decreased estradiol.

Conclusion: Based on this study, it was concluded that the reason for the increased efficiency rate in successive cycles of CC may be the cumulative increase in T and 17OHP levels. However, this result was found not to affect the clinical pregnancy rate.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9511931PMC
http://dx.doi.org/10.4274/tjod.galenos.2022.40607DOI Listing

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