TY - JOUR T1 - Impulse oscillometry and obesity in children JO - Jornal de Pediatria (English Edition) T2 - AU - Assumpção,Maíra S. de AU - Ribeiro,José D. AU - Wamosy,Renata M.G. AU - Figueiredo,Fernanda C.X.S. de AU - Parazzi,Paloma L.F. AU - Schivinski,Camila I.S. SN - 00217557 M3 - 10.1016/j.jped.2017.06.007 DO - 10.1016/j.jped.2017.06.007 UR - https://jped.elsevier.es/en-impulse-oscillometry-obesity-in-children-articulo-S0021755717301043 AB - ObjectiveTo compare impulse oscillometry system parameters of normal-weight children with overweight and obese children. MethodAll participants were submitted to the evaluation of lung function (spirometry and impulse oscillometry) following the American Thoracic Society standards. The evaluation of respiratory mechanics was performed using the Jaeger™ MasterScreen™ Impulse Oscillometry System (Erich Jaeger, Germany), three tests were recorded, with acquisition for at least 20seconds. ResultsThe study included 81 children (30 in the control group, 21 in the overweight group, and 30 the in obesity group), matched for age and sex. Regarding spirometry data, obesity group showed higher numerical values in relation to the control group; however, there were no significant differences among the three groups. For impulse oscillometry parameters, there was a difference between control group and obesity group for respiratory impedance (p=0.036), resistance at 5hertz (p=0.026), resonant frequency (p=0.029), and reactance area (p=0.014). For the parameters expressed in percentage of predicted, there were differences in resistance at 5 hertz, resonant frequency, and reactance area between control group and obesity group. ConclusionsObese children showed increased oscillometry parameters values representative of airway obstruction, compared to normal-weight children. Changes in some oscillometry parameters can already be observed in overweight school-aged children. ER -