[Is low pre-pregnancy body mass index a risk factor for preterm birth and low neonatal birth weight?].
ABSTRACT A pregnant woman's weight is an extremely important factor in the course of pregnancy and delivery. Not only obesity but also being underweight may lead to complications in pregnancy such as: preterm delivery and low neonatal birth weight.
The aim of this study was to analyze the relationship between a low BMI and outcome of pregnancy, birth weight and general well being of the neonates.
415 patients who were hospitalized in the Department of Obstetrics and Reproduction Wrocław Medical University between 1996-2005 was done. The patients were divided into 3 groups I--Underweight (BMI <19,8), II--Appropriate weight (BMI 19,8-26,0) and III--Overweight (BMI>26,0).
The frequency of preterm deliveries as well as low neonatal birth weight <2500g, in underweight mothers was higher than in other groups.
Low pre-pregnancy BMI is an important factor risk factor in preterm deliveries. There was no correlation between BMI and the general well being of the neonates.
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ABSTRACT: Background: The prevalence of obesity is increasing throughout the world.Obesity assessed by body mass index (BMI) has shown to be associated with gestational complications while the relationship using waist circumference (WC) is not clear yet. The present study was aimed to determine the relationship between WC and adverse pregnancy complications. Methods: In this prospective cohort study, 1140 nulliparous pregnant women at 1st trimester of pregnancy referred to health care centers in Tabriz, Iran were enrolled in 2009-2010. Anthropometric indexes including (weight, height and WC) were measured using standardized measures and methods. BMI was classified into normal, overweight and obesity based on WHO classification. Abdominal obesity was defined as WC ≥ 88 cm. Pregnancy complication including gestational diabetes, hypertension and preeclamsia. Data were analyzed using SPSS, version 16. Results: Mean of BMI and WC were 24.32±4.08 kg/m(2), 81.84±9.25cm at 1(st) trimester of pregnancy, respectively. Prevalence of overweight (BMI=25-29.9kg/m(2)) and obesity (BMI>29.9 kg/m(2)) was 27.6%, 8.8%, respectively. Abdominal obesity based on WC was 34.8%. Significant correlations were found between BMI and WC (r=0.73, P =0.0001). Women with BMI>29.9 kg/m(2) and WC>88 cm were more likely to suffer from gestational pregnancy and hypertension, as well as preeclampsia and preterm delivery. Conclusion: Early maternal WC similar to BMI is related with pregnancy complications.Health promotion perspectives. 01/2013; 3(1):73-9.
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ABSTRACT: To identify the risk factors associated with low birth weight (< 2500 grams). Unmatched case-control study performed in a tertiary maternity hospital in Campinas, Brazil, involving 43,499 liveborn infants delivered in the institution between 1986 and 2004. Analysis of the database containing information on deliveries of women who gave birth to infants with low (6,477 cases) and normal (37,467) birth weight were performed. Factors associated with low birth weight were identified according to the odds ratio (OR) and 95% confidence interval (95%CI) in the bivariate analysis and according to the adjusted OR in the multivariate analysis. Sociodemographic characteristics, reproductive history, previous morbidity and factors related to current prenatal care were studied. Extremes of reproductive age, poor education, low maternal weight, smoking beyond the fourth month of pregnancy, previous cesarean section, interdelivery interval < or = 24 months and > or 37 months, maternal history of hypertension, cardiopathy and premature delivery, few (< or = 5) prenatal visits and beginning prenatal care late in pregnancy (after the 3rd month), premature rupture of membranes, increased blood pressure, infectious diseases and hemorrhages during current pregnancy were all associated with low birth weight. Maternal obesity and being a primipara were found to be protective factors. These results confirm the findings of previous studies. The detection and prenatal management of modifiable factors, counseling, pre-conception intervention, adequate prenatal care and the implementation of primary and secondary prevention of maternal morbidity should be a target for all obstetrician as a potential source for reducing the incidence of low birth weight.Revista da Associação Médica Brasileira 01/2009; 55(6):692-9. · 0.77 Impact Factor