Smaller pelvic size in pregnant adolescents contributes to lower birth weight
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João G. Alves
,
Lídia C. Siqueira
Abstract
Adolescent pregnancy is associated with low birth weight. This has been explained by socioeconomic or emotional factors. However, an adolescent’s pelvis may not be completely developed and this can contribute to impairing fetal growth. Our aim was to compare the relationship between pelvic size and birth weight among adolescents and adult mothers. A cross-sectional study was carried out at Instituto de Medicina Infantil Professor Fernando Figueira (IMIP), Brazil. We studied 125 healthy adolescents and 207 healthy adult women, all of whom were primiparous with a singleton term and low-risk pregnancy. The conjugate, intercristal and interspinous diameters were assessed by the Collins pelvimeter. The effect of pelvic size on the birth weight was evaluated using principal component analysis and multiple linear regression model. The mean pelvic size was smaller in adolescent mothers compared to adult ones (35.1 cm vs. 37.5 cm; p<0.001; t-test). After adjusting for other confounding variables, the predicted birth weights corresponding to these mean values of pelvic size were: 3020±27 g for adolescent mothers and 3145±26 g for adult mothers and showed a significant difference (p<0.001). We concluded that a pelvis that is less than fully developed in adolescents, as assessed by pelvic size, may contribute to lower birth weight in adolescent mothers.
Coauthor Lidia Cardoso de Siqueira was sponsored by Programa Institucional de Bolsas de Iniciação Científica (PIBIC), Conselho Nacional de Desenvolvimento Científico e Tecnológico de Pesquisa (CNPq).
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©2013 by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Masthead
- Masthead
- Editorial
- Unintentional death in childhood and adolescence
- Review
- Detached, distraught or discerning? Fathers of adolescents with chronic illness: a review of the literature
- Original Articles
- Perception of transition readiness and preferences for use of technology in transition programs: teens’ ideas for the future
- Adaptation of an internet-based depression prevention intervention for Chinese adolescents: from “CATCH-IT” to “grasp the opportunity”
- Smaller pelvic size in pregnant adolescents contributes to lower birth weight
- R620W polymorphism of protein tyrosine phosphatase PTPN22 in Egyptian children and adolescents with systemic lupus erythematosus: relation to thyroid autoimmunity
- Motivational stage of change in young patients undergoing day treatment for eating disorders
- Leveraging microfinance to impact HIV and financial behaviors among adolescents and their mothers in West Bengal: a cluster randomized trial
- Patterns of contraception choice among Hispanic and non-Hispanic female adolescents
- Translation of children’s cycling into steps: the share of cycling in 10-year-olds’ physical activity
- Weight gain in an eating disorders day program
- Case Report
- Weight loss as a result of religious zeal in young Orthodox Jewish males
