Increased body mass index associated with increased preterm delivery in frozen embryo transfers

OBJECTIVE: To investigate the effects of pre-pregnancy body mass index and weight gain during pregnancy on perinatal outcomes and delivery mode. STUDY DESIGN: In this retrospective cohort study, 722 pregnant women giving birth between 2018-2019 were screened from our hospital database. First, they were divided into four groups according to their pre-pregnancy body mass index (low-weight/normal-weight/overweight/obese), and then they were redivided into three groups according to pregnancy weight gain (≤7/8-15/≥16 kg). Prenatal body mass index and pregnancy weight gain were compared concerning maternal-neonatal results and mode of delivery. RESULTS: According to pre-pregnancy body mass index, among the obese pregnant group, gestational diabetes mellitus (p<0.001), preeclampsia (p=0.029), preterm delivery (p=0.011) and cesarean delivery (p=0.061) rates were more common. As the body mass index increases, neonatal intensive care requirement (p=0.0020) and low 1st minute APGAR scores (p=0.019) were detected more frequently. However, as pregnancy weight gain decreased, preterm delivery (p=0.041) increased. Also, birth weight increased (p<0.001) with the weight gain of the pregnant. Pregnant women gaining more than 16 kg were associated either with a lower <2500 g or a higher birth weight risk >4000 g. CONCLUSION: Pre-pregnancy high body mass index is associated with negative obstetric outcomes like gestational diabetes, preeclampsia, preterm delivery, and increased cesarean rates, and poor fetal incidences with a low APGAR score and high neonatal intensive care admission rates.

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O697 Maternal body mass index and preterm birth: Impact of subtype of preterm delivery

International Journal of Gynecology & Obstetrics ◽

10.1016/s0020-7292(09)61070-5 ◽

2009 ◽

Vol 107 ◽

pp. S292-S293

Author(s):

A. Odibo ◽

Y. Zhong ◽

A. Cahill ◽

G. Macones

Keyword(s):

Body Mass Index ◽

Preterm Birth ◽

Preterm Delivery ◽

Body Mass ◽

Maternal Body Mass Index ◽

Maternal Body

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ABC trial: body mass index and percentage body fat are not different in positive predictive vaue of miscarriage or preterm delivery in patients undergoing IVF

Fertility and Sterility ◽

10.1016/j.fertnstert.2019.07.669 ◽

2019 ◽

Vol 112 (3) ◽

pp. e212-e213

Author(s):

Julia G. Kim ◽

George Patounakis ◽

Caroline R. Juneau ◽

Jason M. Franasiak ◽

Scott J. Morin ◽

...

Keyword(s):

Body Mass Index ◽

Preterm Delivery ◽

Body Mass ◽

Body Fat ◽

Percentage Body Fat

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Does Fetal Sex Influence the Risk of Preterm Delivery in Dichorionic Twin Pregnancies After Spontaneous Conception?

Twin Research and Human Genetics ◽

10.1375/twin.13.5.495 ◽

2010 ◽

Vol 13 (5) ◽

pp. 495-500 ◽

Cited By ~ 6

Author(s):

Katharina Klein ◽

Christof Worda ◽

Maria Stammler-Safar ◽

Peter Husslein ◽

Norbert Gleicher ◽

...

Keyword(s):

Body Mass Index ◽

Preterm Delivery ◽

Body Mass ◽

Maternal Age ◽

Maternal Body Mass Index ◽

Fetal Sex ◽

Spontaneous Conception ◽

Spontaneous Preterm Delivery ◽

The Impact ◽

Twin Pregnancies

Objective: The incidence of preterm delivery has been increasing, and our aim was to estimate the influence of fetal sex on the risk of preterm delivery in dichorionic twins after spontaneous conception.Methods: 125 spontaneously conceived dichorionic twin gestations, with viable fetuses, born after 24 weeks and delivered spontaneously before 37 weeks, were enrolled. The impact of fetal sex, previous preterm delivery, maternal age, body-mass-index, smoking, and parity on gestational age at birth were evaluated.Results: Despite similar baseline characteristics in all three groups, women with one or two male fetuses delivered significantly more often before 34 weeks than patients with two female fetuses, 48% (23/48) and 43% (19/44) vs 21% (7/33),p= .04. Regression analyses, including fetal sex, maternal age, maternal body-mass-index, smoking, previous preterm delivery and parity, revealed that only fetal sex was significantly associated with spontaneous preterm delivery (p= .03).Conclusion: Fetal sex appears to be a risk factor for preterm delivery in spontaneously conceived dichorionic twin gestations. Twin pregnancies with one or two male fetuses seem to be at higher risk for spontaneous preterm delivery than those with only females.

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