RT info:eu-repo/semantics/article T1 Spirometry and respiratory oscillometry: Feasibility and concordance in schoolchildren with asthma A1 Domínguez Martín, Clara A1 Cano Garcinuño, Alfredo A1 Díez Monge, Nuria A1 Alonso Rubio, Ana María A1 Pérez García, Isabel A1 Arroyo Romo, María Teresa A1 Casares Alonso, Irene A1 Barbero Rodríguez, Ana María A1 Grande Álvarez, Reyes A1 Martínez Rivera, María Teresa A1 Sanz Fernández, Mónica K1 Asthma K1 Child K1 Cross‐sectional studies K1 Oscillometry K1 Spirometry K1 32 Ciencias Médicas K1 3201.10 Pediatría AB Objective:The purpose of this study was to describe the feasibility of respiratory oscillometry (RO) in schoolchildren with asthma, and the concordance of its results with those of spirometry, to determine its clinical usefulness.Methods:RO and spirometry were performed in 154 children (6 to 14-year-old) with asthma, following strict quality criteria for the tests. Their feasibility (probability of valid test, time of execution, number of maneuvers needed to achieve a valid test, and perceived difficulty) was compared. The factors that influence feasibility were analyzed with multivariate methods. FEV1, FEV1/FVC, FVC and FEF25-75 for spirometry, and R5, AX and R5-19 for RO, were converted into z-scores and their concordance was investigated through intraclass correlation coefficients (ICC) and kappa indices for normal/abnormal values.Results:There were no differences in the probability of obtaining a valid RO or spirometry (83.1% vs. 81.8%, p = 0.868). RO required a lower number of maneuvers [mean (SD) 4.2 (1.8) versus 6.0 (1.6), p < 0.001] and less execution time [5.1 (2.7) versus 7.6 (2.4) minutes, p < 0.001], and patients considered it less difficult. Age increased the probability of obtaining valid RO and spirometry. The concordance of results between RO and spirometry was low, and only between zFEV1 and zAX could it be considered moderate (ICC = 0.412, kappa = 0.427).Conclusion:RO and spirometry are feasible in children with asthma. RO has some practical advantages, but the concordance of its results with spirometry is low. PB Wiley SN 8755-6863 YR 2023 FD 2023 LK https://uvadoc.uva.es/handle/10324/59255 UL https://uvadoc.uva.es/handle/10324/59255 LA eng NO Pediatric Pulmonology, 2023. NO Producción Científica DS UVaDOC RD 23-may-2024