Comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancy

Introduction: Recent researches have indicated that pregnancies with frozen embryo transfer are associated with the increment of risk of maternal and neonatal complications, especially hypertension during pregnancy. The present study aimed to compare the occurrence rate of gestational hypertension i...

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Main Authors: Farideh Moramezi, Roshan Nikbakht, Najimeh Saadati, Elham Farhadi, Negin Raad
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2023-12-01
Series:Journal of Family Medicine and Primary Care
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Online Access:https://journals.lww.com/10.4103/jfmpc.jfmpc_2429_22
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author Farideh Moramezi
Roshan Nikbakht
Najimeh Saadati
Elham Farhadi
Negin Raad
author_facet Farideh Moramezi
Roshan Nikbakht
Najimeh Saadati
Elham Farhadi
Negin Raad
author_sort Farideh Moramezi
collection DOAJ
description Introduction: Recent researches have indicated that pregnancies with frozen embryo transfer are associated with the increment of risk of maternal and neonatal complications, especially hypertension during pregnancy. The present study aimed to compare the occurrence rate of gestational hypertension in pregnancy with frozen embryo transfer and normal pregnancy. Materials and Methods: This research, as a retrospective cross-sectional study, was performed on pregnant women with frozen embryo transfer (n = 97) and women with normal pregnancies (n = 164) referring to medical centers under the supervision of Ahvaz University of Medical Sciences in 2021. Women aged 18–35 were included in the study after week 20th of pregnancy. Maternal and neonatal outcomes including hypertensive disorders of pregnancy (including gestational hypertension and preeclampsia), preterm birth (before the week 37th), low birth weight (lower than 2500 g), neonatal asphyxia (Apgar score >7 in minute 5th), intrauterine growth restriction (IUGR) and bleeding in the first trimester of pregnancy were evaluated. The association between frozen embryo transfer and pregnancy outcomes was evaluated using multiple logistic regressions. Results: The findings of this study indicated that pregnancy hypertension was observed in 23 people (23.7%) from the frozen embryo transfer group vs. 18 people (11.0%) from the normal pregnancy group (P = 0.006). Frozen embryo transfer pregnancy has a higher risk of gestational hypertension (OR = 2.521, 95% CI: 1.281-4.962; P = 0.007), preterm birth (OR = 2.264, 95% CI: 1.335-3.840; P = 0.002), and low birth weight (OR = 2.017, 95% CI: 1.178-3.455; P = 0.011). However, the incidence of birth asphyxia (P = 0.850), intrauterine growth restriction (P = 0.068), first-trimester bleeding (P = 0.809), and placenta accreta (P = 0.143) did not show a significant difference between two types of normal pregnancy and frozen embryo transfer pregnancy. Conclusion: Frozen embryo transfer pregnancy was associated with a higher risk of maternal and neonatal complications, hypertension, preterm birth, and low birth weight compared to natural and spontaneous pregnancies.
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spelling doaj-art-5424ae5301d3464ebf0f1eb1a238af4f2024-11-11T13:53:30ZengWolters Kluwer Medknow PublicationsJournal of Family Medicine and Primary Care2249-48632278-71352023-12-0112123312331810.4103/jfmpc.jfmpc_2429_22Comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancyFarideh MorameziRoshan NikbakhtNajimeh SaadatiElham FarhadiNegin RaadIntroduction: Recent researches have indicated that pregnancies with frozen embryo transfer are associated with the increment of risk of maternal and neonatal complications, especially hypertension during pregnancy. The present study aimed to compare the occurrence rate of gestational hypertension in pregnancy with frozen embryo transfer and normal pregnancy. Materials and Methods: This research, as a retrospective cross-sectional study, was performed on pregnant women with frozen embryo transfer (n = 97) and women with normal pregnancies (n = 164) referring to medical centers under the supervision of Ahvaz University of Medical Sciences in 2021. Women aged 18–35 were included in the study after week 20th of pregnancy. Maternal and neonatal outcomes including hypertensive disorders of pregnancy (including gestational hypertension and preeclampsia), preterm birth (before the week 37th), low birth weight (lower than 2500 g), neonatal asphyxia (Apgar score >7 in minute 5th), intrauterine growth restriction (IUGR) and bleeding in the first trimester of pregnancy were evaluated. The association between frozen embryo transfer and pregnancy outcomes was evaluated using multiple logistic regressions. Results: The findings of this study indicated that pregnancy hypertension was observed in 23 people (23.7%) from the frozen embryo transfer group vs. 18 people (11.0%) from the normal pregnancy group (P = 0.006). Frozen embryo transfer pregnancy has a higher risk of gestational hypertension (OR = 2.521, 95% CI: 1.281-4.962; P = 0.007), preterm birth (OR = 2.264, 95% CI: 1.335-3.840; P = 0.002), and low birth weight (OR = 2.017, 95% CI: 1.178-3.455; P = 0.011). However, the incidence of birth asphyxia (P = 0.850), intrauterine growth restriction (P = 0.068), first-trimester bleeding (P = 0.809), and placenta accreta (P = 0.143) did not show a significant difference between two types of normal pregnancy and frozen embryo transfer pregnancy. Conclusion: Frozen embryo transfer pregnancy was associated with a higher risk of maternal and neonatal complications, hypertension, preterm birth, and low birth weight compared to natural and spontaneous pregnancies.https://journals.lww.com/10.4103/jfmpc.jfmpc_2429_22frozen embryo transfergestational hypertensionin vitro fertilizationpreeclampsia
spellingShingle Farideh Moramezi
Roshan Nikbakht
Najimeh Saadati
Elham Farhadi
Negin Raad
Comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancy
Journal of Family Medicine and Primary Care
frozen embryo transfer
gestational hypertension
in vitro fertilization
preeclampsia
title Comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancy
title_full Comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancy
title_fullStr Comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancy
title_full_unstemmed Comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancy
title_short Comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancy
title_sort comparing the occurrence rate of gestational hypertension during pregnancy with frozen embryo transfer and natural pregnancy
topic frozen embryo transfer
gestational hypertension
in vitro fertilization
preeclampsia
url https://journals.lww.com/10.4103/jfmpc.jfmpc_2429_22
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AT najimehsaadati comparingtheoccurrencerateofgestationalhypertensionduringpregnancywithfrozenembryotransferandnaturalpregnancy
AT elhamfarhadi comparingtheoccurrencerateofgestationalhypertensionduringpregnancywithfrozenembryotransferandnaturalpregnancy
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