PASSIVE SMOKING AND IMPAIRED LUNG-FUNCTION IN CYSTIC-FIBROSIS

Passive smoking was measured in 57 children with cystic fibrosis and i n 51 controls using a questionnaire and a measurement of urinary cotin ine concentration. In the cystic fibrosis group, cotinine was signific antly lower than in the controls. Also in this group, when the parents smoked the child's forced expiratory volume in one second decreased b y 4% and the forced vital capacity by 3% for every 10 cigarettes smoke d in the household each day.