Aymerich, ClaudiaRodríguez Lázaro, Miguel A.Solana, GorkaFarré Ventura, RamonOtero Díaz, Jorge2023-03-152023-03-152021-08-261664-042Xhttps://hdl.handle.net/2445/195330The measurement of maximal inspiratory (MIP) and maximal expiratory (MEP) pressures is a widely used technique to non-invasively evaluate respiratory muscle strength in clinical practice. The commercial devices that perform this test range from whole body plethysmographs to portable spirometers, both expensive and include a wide range of other respiratory tests. Given that a portable, low-cost, and specific option for MIP and MEP measuring device is not currently available in the market. A high-performance and easy-to-build prototype has been developed and the detailed technical information to easily reproduce it is freely released. A novel device is based on an Arduino microcontroller with a digital display, an integrated pressure transducer, and three-dimensional (3D) printed enclosure (total retail cost e80). The validation of the device was performed by comparison with a laboratory reference setting, and results showed accuracy within ±1%. As the device design is available according to the open-source hardware approach, measuring MIP/MEP can greatly facilitate easily available point-of-care devices for the monitoring of patients and, most important, for making this lung function measurement tool affordable to users in low- and middle-income countries.6 p.application/pdfengcc-by (c) Aymerich, Claudia et al., 2021https://creativecommons.org/licenses/by/4.0/PressióDispositius magnèticsProgramari lliurePulmóProves funcionals respiratòriesPressureMagnetic devicesOpen source softwareLungRespiratory function testsinfo:eu-repo/semantics/article7151212023-03-15info:eu-repo/semantics/openAccess34512389