TY - JOUR T1 - Volumetric capnography (VC) as a complementary tool in lung function evaluation in obese children and adolescents JF - European Respiratory Journal JO - Eur Respir J VL - 42 IS - Suppl 57 SP - P1100 AU - Mariana Ferreira AU - Roberto Mendes AU - Maria Ângela Ribeiro AU - Mariana Zambon AU - José Dirceu Ribeiro Y1 - 2013/09/01 UR - http://erj.ersjournals.com/content/42/Suppl_57/P1100.abstract N2 - Introduction: Effects of obesity on lung function are not clear in children and adolescents.Aim: To compare the lung function in an obese group(OG) versus a control group of healthy subjects(HG) using Spirometry and VC.Methods: Cross-sectional study including 77subjects(38OG and 39HG) aged between 5.56 and 16.34 years. The subjects performed Spirometry(ERS/ATS) and VC.Results: OG had a significantly higher forced vital capacity(FVC)(p=0.03), lower Tiffenau rate(p=0.00) and lower forced expiratory flow 25%-75%(FEF25-75)(p=0.00). About 36.80% of the OG showed flow obstruction. There were no differences between the groups on forced expiratory volume in 1 second(FEV1). The VC data showing significant differences between OG and HG are shown on table 1.View this table:Table 1: VC variables statistically different between the groups.Conclusions: Spirometry and VC detected differences between the groups. The OG reduction in FEF25-75 reflects an obstruction by the flows. Higher values of FVC and pulmonary volumes may represent an adaptation to the increased ventilatory demand due to excessive body mass and airway obstruction. The reduction in Slp3/Ve indicates that despite the damages mentioned, there are no changes in ventilation homogeneity. More studies are required to confirm the results. ER -