Tobacco use in the third trimester of pregnancy and its relationship to birth weight. A prospective study in Spain
Por:
Vila Candel R, Soriano-Vidal FJ, Hevilla Cucarella E, Castro-Sánchez E and Martin-Moreno JM
Publicada:
1 dic 2015
Resumen:
Background: Few studies have been carried out in Spain examining the use of tobacco amongst expectant mothers and its effect on birth weight.
Aims: To observe the proportion of expectant mothers who smoke during their pregnancy, and the impact of tobacco consumption on maternal and birth weight. We also aimed to identify the trimester of pregnancy in which tobacco use produced the greatest reduction in birth weight.
Methods: Prospective observational study in Spain. A random sampling strategy was used to select health centres and participant women. A total of 137 individuals were enrolled in the study. Exposure to tobacco was measured through a self-reported questionnaire. Regressions were performed to obtain a predictive model for birth weight related to smoking.
Findings: Overall, 35% of study participants were smokers during the pre-gestational period (27% in the first trimester, 21.9% in the second and 21.2% in the third). 38.7% of smoking cessation attempts took place in the third-trimester. Pregnant women who smoked up to the third trimester had a higher risk of giving birth to a baby under 3000 g, compared to non-smokers (OR = 5.94, CI 95%: 1.94-18.16). Each additional unit of tobacco consumed daily in the 3rd trimester led to a 32 g reduction in birth weight.
Conclusion: An important proportion of pregnant women in Spain smoke during pregnancy. Pregnant women exposed to tobacco have newborns with lower birth weight. Smoking during the 3rd trimester of pregnancy is associated with the greatest risk of lower birth weight. (C) 2015 Australian College of Midwives. Published by Elsevier Australia (a division of Reed International Books Australia Pty Ltd). All rights reserved.
Filiaciones:
:
Department of Obstetrics and Gynecology, Hospital Universitario de la Ribera, Crta. Corbera km 1, 46.600 Valencia, Spain
Department of Nursing, Universidad Católica de Valencia, C/ Jesús, 10, 46.007 Valencia, Spain(b)
:
Department of Nursing, Universidad Católica de Valencia, C/ Jesús, 10, 46.007 Valencia, Spain(b)
Department of Obstetrics and Gynecology, Hospital Luis Alcanyis, Avda. Ausias March, 46.800 Xativa, Spain(c)
Hevilla Cucarella E:
Department of Nursing, Universidad Católica de Valencia, C/ Jesús, 10, 46.007 Valencia, Spain(b)
Department of Public Health, Conselleria de Sanitat de Valencia, C/ Micer Mascó, 31, 46010 Valencia, Spain(d)
Castro-Sánchez E:
National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Healthcare Associated Infection and Antimicrobial Resistance at Imperial College London, Du Cane Road, London W12 0NN, United Kingdom(e)
Martin-Moreno JM:
Department of Preventive Medicine and Public Health, Universitat de Valencia, Avda. Blasco Ibañez, 15, 46.010 Valencia, Spain(f)
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