Objective: To evaluate the association between fraction of exhaled nitric oxide (FeNO) values and forced expiratory volume in the first second (FEV1) and the level of asthma control, as proposed by the Global Initiative for Asthma (GINA), in asthmatic children and adolescents attended at the National Institute of Women, Children and Adolescents Health Fernandes Figueira of Fundação Oswaldo Cruz (IFF/FIOCRUZ).Methods: This was a cross-sectional study, with a review of medical records of 90 asthmatics between 7 and 17 years old, who were followed up at the IFF/FIOCRUZ Asthma Outpatient Clinic and were referred to perform respiratory function tests (RFT)between March 2013 and September 2014. After classification according to GINA, patients performed complete spirometry and FeNO measurement. Subsequently, they were separated into two groups: regular and non-regular inhaled corticosteroid (ICS) use, regardless of the ventilatory pattern in spirometry. Results: The association between FEV1 values and the degree of asthma control according to GINA (p=0.001) was observed in all patients, regardless of ICS use, but there was no association between FEV1 and levels of FeNO.Conclusions: The correlation observed between GINA and FEV1 reinforces the importance of spirometry in the clinical follow-up of these patients. Although no association was found between the value of FeNO and the degree of asthma control and FEV1, FeNO may be an early method to detect airway inflammation, even before the symptoms and spirometric changes.

Objective: Evaluate the presence of association between the classification of the level of asthma control, using the method proposed by the Global Initiative for Asthma (GINA), the Asthma Control Test (ACT)/Childhood-ACT and the forced expiratory volume in the 1st second (FEV1), in asthmatic children and adolescents treated with inhaled corticosteroids, followed up at the National Institute of Women's, Children's and Adolescents' Health FernandesFigueira of the Oswaldo Cruz Foundation (IFF / FIOCRUZ). Method: A cross-sectional study was carried out with a review of the medical records of all children between 7 and 17 years of age followed up at the Asthma Outpatient Clinic and referred to the Respiratory Insertion Test (PFR) sector between March 2013 and September 2014. In the same day were applied the C-ACT/ACT questionnaires, an asthma control method proposed by the GINA and the FEV1 value in a spirometrictest. Results: From the total number of records evaluated (72), 16 children were excluded because they did not meet the required criteria for performing spirometry. The sample studied (56 children) was predominantly male (58.9%) and median age was 12 (7-17) years. It was observed an association between FEV1 and GINA values ??(p <0.01). Conclusion: The results found in this study indicate that FEV1 measurement is a useful component among the instruments for assessing clinical control of asthma by GINA.