Thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh IVF/ICSI embryo transfer cycles: a retrospective cohort study of 9,266 singleton births

Abstract Background Thin endometrial thickness (EMT) has been suggested to be associated with reduced incidence of pregnancy rate after in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) treatment, but the effect of thin endometrium on obstetric outcome is less investigated. This stu...

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Main Authors: Xiaojie Liu, Jingwan Wang, Xiao Fu, Jing Li, Meng Zhang, Junhao Yan, Shanshan Gao, Jinlong Ma
Format: Article
Language:English
Published: BMC 2021-04-01
Series:Reproductive Biology and Endocrinology
Subjects:
Online Access:https://doi.org/10.1186/s12958-021-00738-9
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author Xiaojie Liu
Jingwan Wang
Xiao Fu
Jing Li
Meng Zhang
Junhao Yan
Shanshan Gao
Jinlong Ma
author_facet Xiaojie Liu
Jingwan Wang
Xiao Fu
Jing Li
Meng Zhang
Junhao Yan
Shanshan Gao
Jinlong Ma
author_sort Xiaojie Liu
collection DOAJ
description Abstract Background Thin endometrial thickness (EMT) has been suggested to be associated with reduced incidence of pregnancy rate after in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) treatment, but the effect of thin endometrium on obstetric outcome is less investigated. This study aims to determine whether EMT affects the incidence of obstetric complications in fresh IVF/ICSI-embryo transfer (ET) cycles. Methods We conducted a retrospective cohort study collecting a total of 9266 women who had singleton livebirths after fresh IVF/ICSI-ET treatment cycles at the Center for Reproductive Medicine Affiliated to Shandong University between January 2014 and December 2018. The women were divided into three groups according to the EMT: 544 women with an EMT ≤8 mm, 6234 with an EMT > 8–12 mm, and 2488 with an EMT > 12 mm. The primary outcomes were the incidence of obstetric complications including hypertensive disorders of pregnancy (HDP), gestational diabetes mellitus (GDM), placental abruption, placenta previa, postpartum hemorrhage (PPH) and cesarean section. Multivariable logistic regression analysis was performed to calculate the odds ratios (ORs) and 95% confidence intervals (CIs) for associations between the EMT measured on the day of human chorionic gonadotropin (HCG) trigger and the risk of the outcomes of interest. Results The HDP incidence rate of pregnant women was highest in EMT ≤ 8 mm group and significantly higher than those in EMT from > 8–12 mm and EMT > 12 mm group, respectively (6.8% versus 3.6 and 3.5%, respectively; P = 0.001). After adjustment for confounding variables by multivariate logistic regression analysis, a thin EMT was still statistically significant associated with an increased risk of HDP. Compared with women with an EMT > 8–12 mm, women with an EMT ≤8 mm had an increased risk of HDP (aOR = 1.853, 95% CI 1.281–2.679, P = 0.001). Conclusion A thin endometrium (≤8 mm) was found to be associated with an increased risk of HDP after adjustment for confounding variables, indicating that the thin endometrium itself is a risk factor for HDP. Obstetricians should remain aware of the possibility of HDP when women with a thin EMT achieve pregnancy through fresh IVF/ICSI–ET treatment cycles.
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spelling doaj.art-a9794c8a86ae487f88422613b2116b9c2022-12-21T22:07:04ZengBMCReproductive Biology and Endocrinology1477-78272021-04-011911910.1186/s12958-021-00738-9Thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh IVF/ICSI embryo transfer cycles: a retrospective cohort study of 9,266 singleton birthsXiaojie Liu0Jingwan Wang1Xiao Fu2Jing Li3Meng Zhang4Junhao Yan5Shanshan Gao6Jinlong Ma7Cheeloo College of Medicine, Shandong UniversityCheeloo College of Medicine, Shandong UniversityCheeloo College of Medicine, Shandong UniversityCheeloo College of Medicine, Shandong UniversityCheeloo College of Medicine, Shandong UniversityCenter for Reproductive Medicine, Shandong UniversityCenter for Reproductive Medicine, Shandong UniversityCenter for Reproductive Medicine, Shandong UniversityAbstract Background Thin endometrial thickness (EMT) has been suggested to be associated with reduced incidence of pregnancy rate after in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) treatment, but the effect of thin endometrium on obstetric outcome is less investigated. This study aims to determine whether EMT affects the incidence of obstetric complications in fresh IVF/ICSI-embryo transfer (ET) cycles. Methods We conducted a retrospective cohort study collecting a total of 9266 women who had singleton livebirths after fresh IVF/ICSI-ET treatment cycles at the Center for Reproductive Medicine Affiliated to Shandong University between January 2014 and December 2018. The women were divided into three groups according to the EMT: 544 women with an EMT ≤8 mm, 6234 with an EMT > 8–12 mm, and 2488 with an EMT > 12 mm. The primary outcomes were the incidence of obstetric complications including hypertensive disorders of pregnancy (HDP), gestational diabetes mellitus (GDM), placental abruption, placenta previa, postpartum hemorrhage (PPH) and cesarean section. Multivariable logistic regression analysis was performed to calculate the odds ratios (ORs) and 95% confidence intervals (CIs) for associations between the EMT measured on the day of human chorionic gonadotropin (HCG) trigger and the risk of the outcomes of interest. Results The HDP incidence rate of pregnant women was highest in EMT ≤ 8 mm group and significantly higher than those in EMT from > 8–12 mm and EMT > 12 mm group, respectively (6.8% versus 3.6 and 3.5%, respectively; P = 0.001). After adjustment for confounding variables by multivariate logistic regression analysis, a thin EMT was still statistically significant associated with an increased risk of HDP. Compared with women with an EMT > 8–12 mm, women with an EMT ≤8 mm had an increased risk of HDP (aOR = 1.853, 95% CI 1.281–2.679, P = 0.001). Conclusion A thin endometrium (≤8 mm) was found to be associated with an increased risk of HDP after adjustment for confounding variables, indicating that the thin endometrium itself is a risk factor for HDP. Obstetricians should remain aware of the possibility of HDP when women with a thin EMT achieve pregnancy through fresh IVF/ICSI–ET treatment cycles.https://doi.org/10.1186/s12958-021-00738-9Endometrial thicknessHypertensive disorders of pregnancyFresh IVF/ICSI embryo transferObstetric complicationPerinatal outcome
spellingShingle Xiaojie Liu
Jingwan Wang
Xiao Fu
Jing Li
Meng Zhang
Junhao Yan
Shanshan Gao
Jinlong Ma
Thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh IVF/ICSI embryo transfer cycles: a retrospective cohort study of 9,266 singleton births
Reproductive Biology and Endocrinology
Endometrial thickness
Hypertensive disorders of pregnancy
Fresh IVF/ICSI embryo transfer
Obstetric complication
Perinatal outcome
title Thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh IVF/ICSI embryo transfer cycles: a retrospective cohort study of 9,266 singleton births
title_full Thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh IVF/ICSI embryo transfer cycles: a retrospective cohort study of 9,266 singleton births
title_fullStr Thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh IVF/ICSI embryo transfer cycles: a retrospective cohort study of 9,266 singleton births
title_full_unstemmed Thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh IVF/ICSI embryo transfer cycles: a retrospective cohort study of 9,266 singleton births
title_short Thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh IVF/ICSI embryo transfer cycles: a retrospective cohort study of 9,266 singleton births
title_sort thin endometrium is associated with the risk of hypertensive disorders of pregnancy in fresh ivf icsi embryo transfer cycles a retrospective cohort study of 9 266 singleton births
topic Endometrial thickness
Hypertensive disorders of pregnancy
Fresh IVF/ICSI embryo transfer
Obstetric complication
Perinatal outcome
url https://doi.org/10.1186/s12958-021-00738-9
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