国际生殖健康/计划生育 ›› 2021, Vol. 40 ›› Issue (6): 446-451.doi: 10.12280/gjszjk.20210292

• 论著 • 上一篇    下一篇

女性低体质量指数对冻融胚胎移植结局的影响

谢奇君, 李欣, 姜薇, 赵纯, 凌秀凤()   

  1. 210004 南京医科大学附属妇产医院生殖中心
  • 收稿日期:2021-07-05 出版日期:2021-11-15 发布日期:2021-11-30
  • 通讯作者: 凌秀凤 E-mail:lingxiufeng_njfy@163.com
  • 基金资助:
    国家自然科学基金(81871210)

Impacts of Female Low Body Mass Index on Pregnancy and Perinatal Outcomes of Frozen-Thawed Embryo Transfer

XIE Qi-jun, LI Xin, JIANG Wei, ZHAO Chun, LING Xiu-feng()   

  1. Reproductive Center, Women′s Hospital of Nanjing Medical University, Nanjing 210004, China
  • Received:2021-07-05 Published:2021-11-15 Online:2021-11-30
  • Contact: LING Xiu-feng E-mail:lingxiufeng_njfy@163.com

摘要:

目的: 探讨女性低体质量指数(body mass index,BMI)对冻融胚胎移植(frozen-thawed embryo transfer,FET)临床及围生期结局的影响。方法: 回顾性分析2015年1月—2020年6月在本中心行FET的5 952例患者的临床资料,按BMI分为A组(低BMI组,BMI<18.5 kg/m2,697例)和B组(正常BMI组,BMI为18.5~23.9 kg/m2, 5 255例);按移植胚胎数将A组和B组分为A1亚组(178例)和B1亚组(1 275例),各移植1枚胚胎;A2亚组(519例)和B2亚组(3 980例),各移植2枚胚胎。比较①A1与A2亚组、A1与B1亚组及A2与B2亚组的妊娠结局;②A组与B组单胎分娩的围生期结局。结果: ①A1亚组的胚胎种植率(P=0.000)、单胎活产率(P=0.000)、妊娠时间(P=0.003)和新生儿出生体质量(P=0.000)高于A2组,双胎活产率(P=0.000)、早产率(P=0.004)和低出生体质量儿发生率(P=0.000)显著低于A2组;A1亚组的新生儿出生体质量低于B1亚组(P=0.013);A2亚组的胚胎种植率(P=0.000)、临床妊娠率(P=0.000)、活产率(P=0.000)、单胎活产率(P=0.006)、早产率(P=0.035)显著低于B2亚组。②二元Logistic回归校正混杂因素后,A组巨大儿和大于胎龄儿(>90th)的发生率仍显著低于B组(aOR=0.493,95%CI:0.296~0.821,P=0.007;aOR=0.645,95%CI:0.473~0.878,P=0.005)。结论: FET周期中,低BMI患者移植1枚胚胎能显著降低早产率和多胎率,提高胚胎种植率和新生儿出生体质量,改善妊娠及围生期结局。

关键词: 人体质量指数, 冻融胚胎移植, 胚胎移植, 低温保存, 冷冻, 妊娠结局

Abstract:

Objective: To investigate the impacts of female low body mass index (BMI) on pregnancy and perinatal outcomes of frozen-thawed embryo transfer (FET). Methods: The clinical data of 5 952 women underwent FET in our center from January 2015 to June 2020 were retrospectively analyzed. These cases were divided into two groups according to BMI: group A (BMI<18.5 kg/m2, 697 cases) and group B (BMI=18.5~23.9 kg/m2, 5 255 cases). Then, group A and group B were subgrouped into A1 (1 embryo transferred, 178 cases) and A2 (2 embryos transferred, 519 cases), B1 (1 embryo transferred, 1 275 cases) and B2 (2 embryos transferred, 3 980 cases) according to the transferred embryos. ①The pregnancy outcomes were compared between A1 and A2 subgroup, A1 and B1 subgroup, A2 and B2 subgroup; ②The perinatal outcomes of singleton women were compared between group A and B group. Results: ①The embryo implantation rate (P=0.000), single live birth rate(P=0.000), gestational age (P=0.003) and neonatal birth weight (P=0.000) in subgroup A1 were significantly higher than those in subgroup A2, while the live birth rate of twins(P=0.000), preterm birth rate(P=0.004) and low birth weight rate(P=0.000) in subgroup A1 were significantly lower than those in subgroup A2. The neonatal birth weight in subgroup A1 was significantly lower than that in subgroup B1 (P=0.013). The embryo implantation rate(P=0.000), clinical pregnancy rate (P=0.000), live birth rate(P=0.000), single birth rate(P=0.006) and preterm birth rate (P=0.035) in subgroup A2 were significantly lower than those in subgroup B2. ②After adjusting the confounding factors through multiple logistic regression, the rates of macrosomia and large for gestational age (>90th) in A group was significantly lower than those in B group (aOR=0.493, 95%CI: 0.296-0.821, P=0.007; aOR=0.645, 95%CI=0.473-0.878, P=0.005). Conclusions: In FET cycle, transfering one embryo in the patients with low BMI can significantly reduce the preterm birth rate and multiple pregnancy rate with the advantages of increasing embryo implantation rate and neonatal birth weight and improving pregnancy and perinatal outcomes.

Key words: Body mass index, Frozen-thawed embryo transfer, Embryo transfer, Cryopreservation, Freezing, Pregnancy outcome