Slow change in body mass index during early triplet pregnancy is associated with decreased birth weight
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Liran Levy
Abstract
Objective: This study evaluates the impact of an average change in body mass index (BMI) during the first 16–25 weeks on outcomes of triplet pregnancies.
Study design: In this retrospective observational study we evaluated a cohort of triplets born to 1235 nulliparas and 705 multiparas. The difference between the pregravid body mass index (BMI) and that obtained upon admission at 16–25 weeks' gestation was averaged to obtain the weekly change in BMI, defined as slow, typical, or fast by values <1SD, ±1SD, and >1SD from the mean average weekly change in BMI. We compared gestational age and birth weight parameters in these three subgroups and by parity.
Results: The average weekly BMI-adjusted weight gain was 0.18±0.08 and 0.17±0.08 kg/m2/week for nulliparas and multiparas, respectively. In both parity groups, differences were noted between slow and typical and between slow and fast, but not between typical and fast weight gain. Nulliparas with slow weight gain had a significantly higher incidence of infants weighing <1000 g (OR 2.0–2.5), 1000–1500 g (OR 1.4 compared with fast weight gain), and included 60–100% more sets with at least 1 SGA infant. In multiparas, there was no effect on gestational age, but otherwise, a similar trend for birth weight parameters was found.
Conclusion: Slow weekly change in BMI (<1 SD from the mean) at 16–25 weeks is associated with decreased birth weight but there was no advantage for fast over a typical weigh gain.
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©2007 by Walter de Gruyter Berlin New York
Articles in the same Issue
- Cervical surgery and preterm birth
- How useful is 3D and 4D ultrasound in perinatal medicine?
- The combined effect of maternal smoking and obesity on the risk of preeclampsia
- Slow change in body mass index during early triplet pregnancy is associated with decreased birth weight
- Examining the relationship between positive mid-gestational fetal fibronectin assays and histological evidence of acute placental inflammation
- Paternal smoking is associated with a decreased prevalence of type 1 diabetes mellitus among offspring in two national British birth cohort studies (NCDS and BCS70)
- Three-dimensional ultrasound power Doppler assessment of the cervix: comparison between nulliparas and multiparas
- Gender- and parity-specific reference charts for fetal size in low risk singleton pregnancies at the onset of the third trimester
- Near term twin pregnancy: clinical relevance of weight discordance at birth
- Intracerebellar hemorrhage in premature infants: sonographic detection and outcome
- Determining the least time required for measuring energy expenditure in premature neonates
- Neither maternal nor fetal mutation (E474Q) in the α-subunit of the trifunctional protein is frequent in pregnancies complicated by HELLP syndrome
- Long-term subcutaneous morphine administration after surgery in newborns
- Superior sagittal sinus thrombosis: a rare but serious complication of hypernatremic dehydration in newborns
- Congress Calendar
- Roster of Perinatal Societies
Articles in the same Issue
- Cervical surgery and preterm birth
- How useful is 3D and 4D ultrasound in perinatal medicine?
- The combined effect of maternal smoking and obesity on the risk of preeclampsia
- Slow change in body mass index during early triplet pregnancy is associated with decreased birth weight
- Examining the relationship between positive mid-gestational fetal fibronectin assays and histological evidence of acute placental inflammation
- Paternal smoking is associated with a decreased prevalence of type 1 diabetes mellitus among offspring in two national British birth cohort studies (NCDS and BCS70)
- Three-dimensional ultrasound power Doppler assessment of the cervix: comparison between nulliparas and multiparas
- Gender- and parity-specific reference charts for fetal size in low risk singleton pregnancies at the onset of the third trimester
- Near term twin pregnancy: clinical relevance of weight discordance at birth
- Intracerebellar hemorrhage in premature infants: sonographic detection and outcome
- Determining the least time required for measuring energy expenditure in premature neonates
- Neither maternal nor fetal mutation (E474Q) in the α-subunit of the trifunctional protein is frequent in pregnancies complicated by HELLP syndrome
- Long-term subcutaneous morphine administration after surgery in newborns
- Superior sagittal sinus thrombosis: a rare but serious complication of hypernatremic dehydration in newborns
- Congress Calendar
- Roster of Perinatal Societies
