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Vol. 43. Issue 2.
Pages 81-85 (February 2007)
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Vol. 43. Issue 2.
Pages 81-85 (February 2007)
Original Articles
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Parental Smoking and Lung Function in Healthy Children and Adolescents
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Francisco Javier González Barcalaa,
Corresponding author
fjgbarcala@telefonica.net

Correspondence: Dr. F.J. González Barcala. Servicio de Neumología. Hospital Clínico Universitario. Choupana, s/n. 15706 Santiago de Compostela. A Coruña. España
, Bahi Takkoucheb, Luis Valdésa, Enrique Temesc, Rosaura Leisd, Rodrigo Cabanasd, José Ramón Rodríguez Suáreza, Rafael Tojod
a Servicio de Neumología, Hospital Clínico Universitario, Santiago de Compostela, A Coruña, Spain
b Departamento de Medicina Preventiva, Facultad de Medicina. Universidad de Santiago de Compostela, Santiago de Compostela, A Coruña, Spain
c Servicio de Neumología, Hospital de Pontevedra, Pontevedra, Spain
d Departamento de Pediatría, Facultad de Medicina, Universidad de Santiago de Compostela, Santiago de Compostela, A Coruía, Spain
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Objective

The debate continues on the effect of passive smoking on nonsmokers. The effect of parental smoking on the lung function of children varies considerably according to geographic area, source of passive smoking, and sex. The objective of this study was to evaluate the effect of parental smoking on the lung function of children.

Population and Methods

A cross-sectional study was performed on a sample of the population of healthy children and adolescents between 6 and 18 years of age in Galicia. Subjects were selected by means of 2-stage cluster sampling grouped by sex and age.

Results

Approximately 56% of the children were exposed to the tobacco smoke of one of their parents. Children whose fathers were smokers presented a 40% higher risk of reduced forced expiratory flow at 75% of forced vital capacity (FEF75%) and a 30% higher risk of reduced FEF25%–75%. Children whose mothers were smokers presented a 30% higher risk of reduced forced expiratory volume in the first second and a 40% higher risk of reduced FEF50%. There was a 60% increase in risk of reduced FEF75%. The fact that both parents smoked did not appear to increase the risk of reduced lung function.

Conclusions

Parental smoking has a considerable effect on the lung function of children and adolescents. Smoking by either the mother or the father has a decisive influence. The fact that this effect is independent of the growth of the child and that the obstructive effect is located principally in the distal airways appears to confirm the hypothesis that this effect is produced after birth.

Key words:
Lung function
Passive smoking
Spirometry
Objetivo

Continúa la controversia sobre el efecto del tabaquismo pasivo en los no fumadores. El efecto del tabaquismo de los padres sobre la función pulmonar de los hijos presenta gran variabilidad entre diferentes zonas geográficas, fuente del tabaquismo pasivo y sexos. El objetivo del presente estudio ha sido valorar el efecto del tabaquismo de los padres sobre la función pulmonar de sus hijos.

Población y Métodos

Hemos llevado a cabo un estudio transversal en una muestra de la población de niños y adolescentes sanos de 6 a 18 años de Galicia, seleccionada mediante un muestreo bietápico en racimos y estratificada por sexo y edad.

Resultados

Alrededor del 56% de los niños estaban expuestos al humo del tabaco de alguno de sus padres. Los niños de padres fumadores presentaban un 40% más de riesgo de reducción del flujo espiratorio forzado al 75% de la capacidad vital forzada (FEF75%), y un 30% de reducción del FEF25–75%. Los niños cuyas madres eran fumadoras tenían un 30% más de riesgo de reducción del volumen espiratorio forzado en el primer segundo, y un 40% de reducción del FEF50%. El incremento de riesgo de reducción del FEF75% fue del 60%. El hecho de que fumaran ambos progenitores no pareció incrementar el riesgo de función pulmonar reducida.

Conclusiones

El tabaquismo parental tiene un importante efecto sobre la función pulmonar de niños y adolescentes. Tanto el tabaquismo materno como el paterno influyen decisivamente. El hecho de que este efecto sea independiente del crecimiento del niño y que el efecto obstructivo se localice fundamentalmente en la vía aérea distal parece confirmar la hipótesis de que este efecto se produce después del nacimiento.

Palabras clave:
Función pulmonar
Tabaquismo pasivo
Espirometría
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This study was funded by the Universidad de Santiago de Compostela and the Department of Health of the government (Xunta) of the Autonomous Community of Galicia.

Copyright © 2007. Sociedad Española de Neumología y Cirugía Torácica (SEPAR)
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