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792 ISBN: 978-84-09-24491-1 ÁREA DE ESPECIALIDAD • NEUMOLOGÍA ASOCIACIÓN ESPAÑOLA DE PEDIATRÍA ESTUDIO. The most frequent inhaler technique errors in sibilant children Mafalda Casinhas Santos 1 , Sara Mâncio Limão 1 , Helena Margarida Carrolo 1 , Joana Gil Pedro 2 , David Marques Lito 1 1 Pediatric Service of Hospital Vila Franca de Xira, Lisboa, Portugal 2 Department of Pediatrics, Santa María Hospital-CHLN, Academic Medical Center of Lisbon, Portugal INTRODUCCIÓN Y OBJETIVOS Despite therapeutic advances, asthma continues tobe one of themost frequent chronic conditions in thepae- diatric population. Inhalermisuse by children and car- egivers has been frequently observed andhas obvious consequences in drug efficiency and disease control. The aim of this study was to identify the most frequent inhaler technique errors and its correlation with sociodemographic data and previous technique demonstration. MÉTODOS We conducted a prospective observational study on pMDI+spacer technique between 2013 and 2019. One hundred pMDI users were enrolled during medical appointments. Caregivers were asked to demon- strate inhaler technique and eight variables were analysed and registered by the assistant physician as “yes” or “no” according to patient/caregiver per- formance. Analysis was performed with SPSS 20.0.0 and R Statistics Software. RESULTADOS There were 65.6%males with ages ranged from seven months to 12 years old, and an average age of 2.8 years old. Themost common diagnosis was multiple trigger recurrent wheezing (36.3%), followed by unspecified recurrent wheezing (24.2%), viral induced recurrent wheezing (22.0%) and asthma (15.4%). The inhaler was used by the mother in 61.9%, the father in 7.2%, both parents in 25.8%, grandparents or parents in 2.1%, parents and childcare workers in 2.1% and the patient himself in 1%. Only 15%had previously dem- onstrated their inhalatory technique. When asked to exhibit therapeutic administra- tion with pMDI+spacer, only 64.7% patients cor- rectly performed the eight steps evaluated; 27.5% commited one error, 2% two errors and 5.9% three errors. On average the patients presented 0.63 er- rors, but when analyzed separately, there was a sig- nificantly lower error rate among the sample who had previously demonstrated the inhalatory tech- nique (0.07 errors versus 0.76 errors). Among the 15 patients whose technique had been observed, only one (7%) presented one error or more, contrasting with the 41 of 80 (51%) which had failed at least one step among the sample who had not technique demonstration. With regard of error type, the most frequently ob- served was no mouth-washing after inhalant corti- cotherapy (49%) followed by no shaking the inhaler before use (28%) and not counting 10 seconds after inhalation has been performed (28%). CONCLUSIONES In our study almost half of patients presented some error during therapeutic administration. The error rate appears to be lower if patient had previously demonstrated the inhaler technique. So this study elucidates the child-care professional’ need to demonstrate the correct inhaler technique during medical appointments.