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Revista Portuguesa de Pneumologia

versão impressa ISSN 0873-2159

Resumo

MARTINS, Pedro et al. The clinical use of exhaled nitric oxide in wheezing children. Rev Port Pneumol [online]. 2008, vol.14, n.2, pp.195-218. ISSN 0873-2159.

The body of published work on the role of exhaled nitric oxide (FENO) in the study of bronchial inflammation allows it to be classed as a simple, non-invasive measurement that is very useful in evaluating asthmatic patients. During a prospective study into the effects of air pollution on the health of the population of Viseu (Saud'AR Project), children with a clinical history of wheezing were identified through using the International Study of Asthma and Allergy in Childhood (ISAAC) questionnaire. Children later filled in a new standardised questionnaire and underwent skin-prick-tests, spirometry and FENO measurement. Their mean age was 7.8±1.1 years. Comparing those who wheezed in the 6 months before evaluation (n=27) with those who didn’t, statistical differences for ÄFEV1 (8% median versus 4.5%, p=0.0399) and for FENO (23 ppb median versus 12 ppb, p=0.0195, respectively) were observed. Concerning children who needed a bronchodilator in the six previous months (n=19) and those who didn’t, there was also a statistically significant difference in FENO: 27 ppb median versus 11 ppb median, respectively; p<0.0001. When comparing children who needed an unscheduled medical appointment in the six months previous to the evaluation (n=9) and those who didn’t, there was also significant differences for FENO: 28 ppb median versus 13 ppb median, p=0.0029. In conclusion, the existence of symptoms seems to be better related to FENO than spirometry.

Palavras-chave : Wheezing; asthma; nitric oxide; FENO.

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