中山大学附属第三医院生殖中心,广东 广州 510630
张小霞,学士,初级检验师,研究方向:生殖医学,E-mail:zhangxx93@mail.sysu.edu.cn
收稿:2021-12-06,
纸质出版:2022-03-20
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张小霞,王辉田,李涛.囊胚培养为主时解冻卵裂期胚胎移植的妊娠结局分析[J].中山大学学报(医学科学版),2022,43(02):253-260.
ZHANG Xiao-xia,WANG Hui-tian,LI Tao.Pregnancy Outcome of Frozen Cleavage-stage Embryo Transfer When Blastocyst Culture Is the Main Treatment of IVF Patients[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(02):253-260.
张小霞,王辉田,李涛.囊胚培养为主时解冻卵裂期胚胎移植的妊娠结局分析[J].中山大学学报(医学科学版),2022,43(02):253-260. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0211.
ZHANG Xiao-xia,WANG Hui-tian,LI Tao.Pregnancy Outcome of Frozen Cleavage-stage Embryo Transfer When Blastocyst Culture Is the Main Treatment of IVF Patients[J].Journal of Sun Yat-sen University(Medical Sciences),2022,43(02):253-260. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).2022.0211.
目的
2
探讨以囊胚培养及解冻囊胚移植为主流时,移植解冻卵裂期胚胎的妊娠结局,评价冻存卵裂期胚胎的价值,以及影响解冻卵裂期胚胎移植妊娠率的因素。
方法
2
回顾性分析本中心2015年9月至2020年6月共1 607例解冻卵裂期胚胎移植的临床结局,根据是否行囊胚培养及是否有可用囊胚,分为3组,即无养囊组、养囊失败组、养囊成功组。分析3组人群的年龄、不孕年限、基础FSH、BMI、获卵数、D3优胚数等基本资料,以及使用logistic回归分析影响解冻卵裂期胚胎移植临床妊娠率的因素。
结果
2
解冻D3卵裂胚移植的总体临床妊娠率较低(35.2%,565/1 607),未养囊组随着女方年龄的增加妊娠率显著下降。养囊失败组例数较少(98例),妊娠组与未妊娠组间临床资料及胚胎发育情况差异无统计学意义。养囊成功但有移植囊胚失败史的病人,解冻卵裂胚的总体临床妊娠率高于其他两组,为46.9%,年龄、获卵数、D3优胚数、可用囊胚数、移植胚胎评分不影响此组妊娠率。与囊胚已解冻完相比,剩余冻存囊胚数≥1的妊娠率显著升高,OR
95%CI为3.789(2.088,6.877),
P
<0.001。ICSI病人临床妊娠率略高于常规IVF病人,OR
95%CI为1.783(0.987,3.224),
P
=0.055。
结论
2
对于卵巢反应差无养囊的病人,临床妊娠率与年龄和胚胎质量有关;于养囊病人,即使养囊失败,或者移植囊胚失败(未妊娠),解冻卵裂胚胚胎移植仍有相当的临床妊娠机会。因此在养囊为主流的情况下,建议D3冻存部分卵裂期胚胎,可根据患者自身条件及中心的囊胚培养效率,选择一定数量及质量的卵裂期冻存。
Objective
2
To analyze the pregnancy outcome of thawed cleavage staged embryo transfer (TET) cycles and factors affecting the clinical pregnancy rate of these TET cycles when blastocyst culture and transfer are the main treatment of IVF patients, and to analyze the value of freezing 1 to 2 cleavage staged embryos on day 3 before blastocyst culture.
Methods
2
We retrospectively analyzed the clinical outcome of 1 607 cleavage staged TET cycles in our IVF center from September 2015 to June 2020, which were divided into three groups: no extended culture group, and extended culture groups with or without usable blastocysts. Basic data such as patients,age, years of infertility, basic FSH, BMI, number of retrieved oocytes and day 3 good quality embryos of the three groups were analyzed. Multivariate logistic regression was used to analyze factors affecting clinical pregnancy rates of the three groups.
Results
2
The overall clinical pregnancy rate of all cleavage staged TET was low (35.2%, 565/1 607). The clinical pregnancy rate was associated with the patient's age and quality of transferred embryos for the group without blastocyst culture. There were only 98 patients included in the extended culture group without usable blastocysts, and there was no statistical difference in patients’ data, embryonic development and quality of transferred embryos between the pregnant and non-pregnant patients. Patients with a history of blastocysts transfer and failed pregnancy had a higher clinical pregnancy rate than those of the other two groups, 46.9%. The age, oocyte number, number of day 3 good quality embryos, number of usable blastocysts, and quality of transferred embryos did not affect the clinical pregnancy rate in this group, while the remaining number of frozen blastocyst had effects on the pregnancy rate [≥1 versus 0, OR 95% CI:3.789(2.088, 6.877),
P
<
0.001]. The clinical pregnancy rate of ICSI patients was slightly higher than that of conventional IVF patients, OR 95% CI: 1.783(0.987, 3.224),
P
=0.055.
Conclusions
2
For patients with no extended culture, the pregnancy rate is associated with the patient age and quality of transferred embryos. For the extended culture groups with or without transferrable blastocysts, transferring the cryopreserved cleavage staged embryos could achieve a good chance of clinical pregnancy. Therefore, cryopreserve a minimal number of cleavage staged embryos before extended culture could increase the chance of clinical pregnancy when blastocyst culture and transfer are the main treatments of IVF patients. The number and quality of cleavage staged embryos cryopreserved on day 3 should be decided according to the patients’ charateristics and the blastocyst culture efficiency of IVF center.
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