Abstract
To evaluate the clinical efficacy of modified human menopausal gonadotropin (hMG) stimulated, hormone replacement therapy (HRT), natural cycling and letrozole ovulation induction during endometrial preparation for frozen-thawed embryo transfer (FET) in patients with normal menstrual cycles. This retrospective analysis included a total of 5070 cycles of patients with normal menstrual patterns who underwent FET between October 2009 and September 2015. The patients were divided into four groups according to the method of endometrial preparation for FET: 1838 cycles were natural, 1666 underwent HRT, 340 underwent letrozole ovulation induction and 1226 underwent modified hMG stimulated. Reproduction-related clinical outcomes in the four groups were compared. The clinical pregnancy rates and live birth rates of patients in the modified hMG stimulated group were significantly higher than that in the other groups p < .05. While abortion rates were not significantly different among all four groups (all p >.05). Modified hMG stimulated resulted in a higher pregnancy rate compared to the other treatment groups. Therefore, modified hMG stimulated may be an effective option in endometrial preparation for FET in patients with normal menstrual cycles.
Published Version
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