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Medical Science Monitor Basic Research


eISSN: 1643-3750

The Predictive Value of the Follicular Output Rate on Pregnancy Outcome of Patients with Polycystic Ovary Syndrome Undergoing In Vitro Fertilization and Embryo Transfer

Haiyan Yang, Jia Lin, Congcong Jin, Lvhe Meng, Suichun Wu, Ya Chen

Reproductive Medicine Center of The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)

Med Sci Monit 2020; 26:e916175

DOI: 10.12659/MSM.916175

Available online: 2020-12-11

Published: 2020-12-11

BACKGROUND: This retrospective study aimed to evaluate the predictive value of the follicular output rate (FORT) on the pregnancy outcome of patients with polycystic ovary syndrome (PCOS) undergoing in vitro fertilization and embryo transfer (IVF-ET).
MATERIAL AND METHODS: Between January 2012 and June 2016, a total of 1,541 patients with PCOS who underwent IVF-ET at our center were enrolled in the study. FORT was calculated as the pre-ovulatory follicle count (PFC)/antral follicle count (AFC)×100%.
RESULTS: According to the FORT, patients were divided into low, medium, and high FORT groups. With an increase in the FORT, the PFC and serum estradiol at the day of human chorionic gonadotropin (hCG) injection, the number of retrieved oocytes, metaphase II (MII) oocytes, total number of embryos, and number of high-quality embryos significantly increased (P<0.05 and P<0.001) from the low to high FORT groups, while the AFC, gonadotropin (Gn) stimulation day, and total Gn decreased significantly (P<0.001). The live birth rate from frozen embryo transfer and the cumulative live birth rate was the lowest in middle FORT group but increased significantly in high FORT group (P<0.05). The correlation analysis between FORT and related factors showed that the FORT was negatively correlated with body mass index (BMI), Gn stimulation days, and total Gn (P<0.05).
CONCLUSIONS: FORT is a powerful tool for measuring ovarian reactivity. For patients with PCOS, a high FORT to obtain high-quality embryos and perform frozen embryo transplantation can achieve good pregnancy outcome.

Keywords: Embryo Transfer, Pregnancy Complications, Reproductive Techniques, Assisted