Objective: To investigate the effect of human chorionic gonadotropin (HCG)day serum progesterone (P) level on the live birth rate (LBR) of fresh embryo transfer with GnRH antagonist protocols. Methods: Patients who underwent the first IVF/ICSI in the Reproductive Center of the Third Affiliated Hospital of Zhengzhou University from January 2018 to December 2020 were included for analysis. The patients with normal ovarian response with GnRH antagonist protocols were included (n=765). The receiver operating characteristic curve (ROC) was used to select the optimal cut-off value of serum P on HCG day (0.83 μg/L), and the included cycles were divided into two groups: P<0.83 μg/L (n=444) and P≥0.83 μg/L (n=321). The primary outcome measure was LBR. Secondary outcome measures included clinical pregnancy rate (CPR) and early miscarriage rate. The difference of the above indexes between the two groups was compared. Multivariate logistic regression model was used to analyze the effect of serum P level on LBR in fresh embryo transfer cycles. Results: The maternal ages in P<0.83 μg/L group and P≥0.83 μg/L group were (32.40±5.49) years and (32.53±5.51) yeas, respectively. The paternal ages were (33.35±6.34) years and (33.43±6.38) years, respectively of which, the difference was not statistically significant (P>0.05). The CPR in the P<0.83 μg/L group was 45.9% (n=204), which was significantly higher than that in the P≥0.83 μg/L group (37.1%) (n=119) (P=0.014). There was no significant difference in the early miscarriage rate between the two groups [14.2% (n=29) vs 14.3% (n=17), P=0.986]. The LBR in the P<0.83 μg/L group was significantly higher than that in the P≥0.83 μg/L group [36.3% (n=161) vs 28.0% (n=90), P=0.017]. By multivariate logistic regression model analysis, the maternal age, type of embryo transferred, number of embryos transferred, endometrial thickness on HCG day and serum P level on HCG day were independent risk factors of LBR. The adjust OR(95%CI) were 0.91(0.88-0.94), 2.36(1.04-5.35), 1.84(1.14-2.95), 1.16(1.07-1.25)and 0.63(0.44-0.89), all P<0.05. Conclusion: When the GnRH antagonist protocol is applied in the normal ovarian response population, as the serum P on the HCG trigger day≥0.83 μg/L, the CPR and LBR of fresh embryo transfer are decreased.
目的： 分析人绒毛膜促性腺激素（HCG）日血清孕酮（P）水平对拮抗剂方案新鲜周期移植活产率（LBR）的影响。 方法： 纳入2018—2020年在郑州大学第三附属医院生殖医学科首次行体外受精（IVF）/卵胞质内单精子注射（ICSI）助孕且卵巢正常反应患者，行拮抗剂方案且行新鲜周期胚胎移植，共765周期（765例患者）。采用受试者工作特征（ROC）曲线选取HCG日血清P最佳截断值为0.83 μg/L，将纳入周期分为2组：P<0.83 μg/L（444周期）和P≥0.83 μg/L（321周期）。主要观察指标为LBR，次要观察指标包括临床妊娠率（CPR）和早期流产率，并比较2组患者上述指标差异，采用多因素logistic回归模型分析HCG日血清P水平对拮抗剂方案新鲜周期移植LBR的影响。 结果： P<0.83 μg/L组和P≥0.83 μg/L组患者女方年龄分别为（32.40±5.49）和（32.53±5.51）岁，男方年龄分别为（33.35±6.34）和（33.43±6.38）岁，差异均无统计学意义（均P>0.05）；P<0.83 μg/L组CPR为45.9%（204周期）高于P≥0.83 μg/L组的37.1%（119周期），差异具有统计学意义（P=0.014）；2组患者的早期流产率差异无统计学意义（P=0.986）；P<0.83 μg/L组患者的LBR为36.3%（161周期），高于P≥0.83 μg/L组患者的28.0%（90周期），差异具有统计学意义（P=0.017）。多因素分析结果显示，女方年龄、移植胚胎类型、移植胚胎数、HCG日子宫内膜厚度和HCG日血清P水平是LBR的相关因素，OR（95%CI）分别为0.91（0.88~0.94）、2.36（1.04~5.35）、1.84（1.14~2.95）、1.16（1.07~1.25）、0.63（0.44~0.89），均P<0.05。 结论： 在卵巢正常反应人群中应用拮抗剂方案，当HCG日P≥0.83 μg/L时，新鲜胚胎移植CPR和LBR降低。.