Alteraciones de la función pulmonar medida por espirometría y oscilometría de impulso en niños asmáticos con sobrepeso y obesidad

Abstract

Introduction: Increased body mass index asthma affects lung function in asthma. Objective: to determine if asthmatics with overweight or obesity have alterations in Impulse oscillometry (IOS) and spirometry compared to eutrophic Method: Study carried out in children and adolescents with persis- tent asthma. IOS-Spirometry pre and post bronchodilator were performed successively according to ATS/ERS/SER criteria. The patients were classified as: eutrophic (AE), overweight (ASP) and obese (OA). Baseline and bronchodilator response (BR) averages were compared in spirometry and IOS with ANOVA and Tukey’s post hoc analysis of variance. A power of80% and a error of 5% were considered. Results: 559 patients were analyzed, mean age 9.2 years, 50.9% male. AE 52.4%, ASP 31.3% and OA 16.3%. Significant differences were found between OA vs AE (X5, AX, D5-20, FEV1/FVC, FEF25-75 / FVC, RB FEV1), and between ASP vs AE (AX, D5-20, FEV1/FVC). Significant differences were also found in men, not women (X5, D5-20, FEV1/FVC, BR FVC, BR FEV1). Conclusions: Asthmatic children with overweight and obesity have a greater compromise of pulmonary function parameters measured by spirometry and IOS than asthmatics with normal nutritional status. There are gender differences in spirometry and IOS alterations.