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Archivos argentinos de pediatría

Print version ISSN 0325-0075

Abstract

IANIERO, Luciano et al. Analysis of the fow-volume curve in children and adolescents with allergic rhinitis without asthma. Arch. argent. pediatr. [online]. 2013, vol.111, n.4, pp.322-327. ISSN 0325-0075.  http://dx.doi.org/10.5546/aap.2013.322.

Introduction. There is epidemiological, functional and pathologic evidence that relates upper and lower airways, clinically known as a single respiratory tract. Patients with allergic rhinitis without asthma may present subclinical abnormal spirometry parameters. Objectives. To describe the results of the fow-volume curve in a group of patients with allergic rhinitis without asthma and analyze the possible associations between anthropometric, clinical and biochemical outcome measures with abnormal spirometry results. Population and Methods. Observational, descriptive study including children and adolescents aged 6 to 18 years old with symptoms of allergic rhinitis without asthma. Age, gender, body mass index and duration of rhinitis were determined as per the subject's medical record. Allergen skin tests, fow-volume curve spirometry, determination of eosinophil count in blood and in nasal secretions, and total serum IgE were performed. Results. A total of 84 patients were studied; 21 (25%; 95% CI: 15.1-34.8) presented at least one altered spirometry outcome measure. The FEV1/FVC ratio was the most affected outcome measure (10/84; 12%; 95% CI: 4.3-19.4). The multiple logistic regression analysis determined that spirometry alterations were associated with the number of blood eosinophils (OR: 1.00229; 95% CI: 1.00022-1.00436; p= 0.03) and the body mass index (OR: 1.31282; 95% CI: 1.08611-1.58685; p= 0.0049). Conclusions. Our results showed spirometry alterations in a considerable percentage of children and adolescents with allergic rhinitis without asthma. The blood eosinophil count and the body mass index could be associated with a sub-clinical alteration of pulmonary function.

Keywords : Allergic rhinitis; Spirometry; Pulmonary function tests.

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