Acceptability of remote lung function testing using portable spirometry devices: perspectives of children and young people with respiratory conditions and their caregivers.

<bold>Background:</bold> Portable spirometry devices enable children and young people (CYP) with respiratory conditions to undergo remote lung function assessment. Although previous research indicates the efficacy of portable spirometry devices compared to hospital-based equipment, it is important to explore user perspectives prior to implementation. <bold>Aims:</bold> Understand the acceptability of portable spirometry devices in CYP with respiratory conditions and caregivers. <bold>Methods:</bold> As part of a multicentre prospective cohort study conducted between 2021-22, n=73 CYP performed supervised spirometry (via video link) and unsupervised spirometry using a portable device at home. CYP and caregivers subsequently completed mixed-methods questionnaires assessing the acceptability of portable spirometers. Quantitative and qualitative data were analysed using descriptive statistics and content analysis, respectively. <bold>Results:</bold> n=60 CYP (n=25 children and n=35 adolescents) aged 5-16 years (mean 12 years), and caregivers, completed the study. 96% of children and 100% of adolescents and caregivers reported a positive experience of portable spirometry. Participants considered the approach reliable and time efficient – with 94% taking <10 mins – and cited societal benefits including reduced travel and school absence. However, challenges included device set-up and CYP lacking motivation to test. <bold>Conclusions:</bold> Findings from this preliminary analysis suggest portable spirometers are considered acceptable, convenient and empower caregivers to monitor lung function to support better self-management. Cost-benefit-analysis remains a research priority.