Source: Annual Congress 2002 - Exposure to chemicals
Disease area: Airway diseases

Abstract

In asthma and allergy a hereditary is often seen, but for the manifestation of the diease, environmental factors may play an important role. The increased prevalence of asthma may be due to changes in our environment. This study included asthmatics (n=98) and non asthmatics controls (n=97), matched for age, gender and type of accommodation. The aim was to investigate the home environment regarding to risk factors, for developing or deterioration, of respiratory symptoms. For individual asthmatics we identified risk factors at levels that may be can increase the symptoms. Measurements of temperature, relative humidity, carbon dioxide, formaldehyde, nitrogen dioxide and allergens from house dust mites were performed. House calls were done in both groups and professionals performed an assessment of the construction and condition of the building. Generally there was no difference between the Swedish groups. There was however, a significant higher level at the controls for internal moisture supply. In the Estonian investigation there was a tendency that the cases' home environment had higher levels of formaldehyde and house dust mites. There was a significant higher level of relative humidity at the cases, compared with the controls. The highest level of nitrogen dioxide was found in Estonia. The results indicate that preventive interventions in asthmatics' home environment can be needed in both Sweden and Estonia.

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M. L. A. Frisk, A. Raukas-Kivioja, H. Andersson, H. M. Loit, M. Meren, G. Stridh (Örebro, Uppsala, Sweden; Tallinn, Estonia). A case/control study in asthmatics and healthy persons home environment - assessments of the indoor climate in Sweden and Estonia.. Eur Respir J 2002; 20: Suppl. 38, 868

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