Study of ovarian recovery time after oocyte retrieval and the relationship between pregnancy outcomes and embryo transfer time in patients who undergo freeze-all strategy
10.3760/cma.j.cn101441-20191129-00535
- VernacularTitle:全部胚胎冷冻患者取卵后卵巢恢复情况及妊娠结局的相关因素分析
- Author:
Yue NIU
1
;
Lei XIE
1
;
Juanjuan LU
1
;
Daimin WEI
1
Author Information
1. 山东大学附属生殖医院，济南 250021
- Publication Type:Journal Article
- Keywords:
Frozen embryo;
Embryo transfer;
Estradiol;
Ovulation;
Pregnancy outcome
- From:
Chinese Journal of Reproduction and Contraception
2021;41(1):62-67
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the recovery time of ovary in patients who underwent all embryo freezing after oocyte retrieval in in vitro fertilization (IVF) and the relationship between pregnancy outcome and embryo transfer time. Methods:This research included 53 patients who underwent all embryos freezing in the Reproductive Hospital of Shandong University from July to December in 2017. The baseline level of serum estradiol in the first menstrual cycle after oocyte retrieval and the ovulation time during the second menstrual cycle after oocyte retrieval was assessed in 53 patients. In addition, the pregnancy outcomes of all patients underwent frozen-thawed embryo transfer were followed up.Results:During the second to the fourth day of the first menstrual cycle after oocyte retrieval, 88.68% (47/53) of the patients had a blood estradiol level below 50 ng/L, which had no relationship with the age of the patients (≤30 years old, >30 years old) ( P=0.161), the method of ovulation induction ( P=0.516), with or without polycystic ovary syndrome ( P=0.661), the number of oocyte obtained (≤15, >15) ( P=0.671). Among patients without polycystic ovary syndrome and regular menstrual cycle, 76.00% (19/25) of patients had recovered ovulation in the second menstrual cycle after oocyte retrieval, and the median ovulation time was the 16th day of menstruation cycle. There was no significant difference in the pregnancy outcomes between patients who had embryo transfer during the second menstrual cycle and patients who had embryo transfer during the third menstrual cycle or later ( P>0.05). Conclusion:It is rational to transfer embryo earlier for patients who underwent all embryo freezing after oocyte retrieval in IVF.
