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Influence on fetal growth of exposure to tobacco smoke during pregnancy
J M Roquer1, J Figueras, F Botet
1Department of Pediatrics, Clinic Hospital, Spain.
Insights
Exposure to tobacco smoke during pregnancy, both active and passive, significantly reduces fetal growth. Heavy maternal smoking led to greater weight deficits in newborns compared to passive smoke exposure.
Area of Science:
- Obstetrics and Gynecology
- Neonatal Health
- Environmental Health
Background:
- Prenatal exposure to environmental toxins is a growing concern.
- Tobacco smoke contains numerous harmful compounds affecting fetal development.
- Understanding the impact of maternal smoking on neonatal outcomes is crucial.
Purpose of the Study:
- To investigate the association between maternal tobacco smoke exposure and fetal growth parameters.
- To quantify the effects of active versus passive smoking on newborn measurements.
Main Methods:
- Analysis of 129 term newborns.
- Classification of infants based on maternal smoking status (active/passive) via questionnaire.
- Measurement of fetal growth parameters including weight, length, and head/chest circumference.
Main Results:
- Both active and passive tobacco smoke exposure during pregnancy were linked to reduced birth weight, length, and head/chest perimeters.
- Infants of heavy smokers experienced greater weight deficits (458g) than those exposed to passive smoke (192g).
Conclusions:
- Maternal tobacco smoke exposure, including passive, negatively impacts fetal growth.
- Passive smoking is a significant factor influencing neonatal growth parameters and warrants consideration in research and clinical practice.
Abstract:
We analysed the effect of exposure to tobacco smoke during pregnancy on fetal growth parameters in 129 term newborns. Children were classified into four depending on exposure on the basis of a questionnaire completed by the mother. The results confirmed that tobacco smoking reduced weight, length, cranial and thoracic perimeters at birth when exposure was due to either active or passive smoking. Weight deficits of infants whose mothers smoked heavily (458 g) were higher than those whose mothers were exposed to passive smoking (192 g). We conclude that passive smoking is a very important variable and should be taken into account in any study of neonatal growth parameters.