Ventilation in homes and bronchial obstruction in young children.

A study was done to find a link between bronchial obstruction in infants under two years old and ventilation rate in residential buildings. A matched case control study was carried out in Oslo over two years. It was found that the risk of bronchial obstruction was not directly associated with the ventilation rate in litres per second and per person. Environmental tobacco smoke affected the incidence of bronchial obstruction, as well as dampness, presence of textile wallpaper and plasticiser-containing surfaces. Concludes that low ventilation rates strengthen the effects of indoor air pollutants.