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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/173053
Low-cost, easy-to-build noninvasive pressure support ventilator for under-resourced regions: open source hardware description, performance and feasibility testing
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Aim: Current pricing of commercial mechanical ventilators in low-/middle-income countries (LMICs) markedly restricts their availability, and consequently a considerable number of patients with acute/chronic respiratory failure cannot be adequately treated. Our aim was to design and test an affordable and easy-to- build noninvasive bilevel pressure ventilator to allow a reduction in the serious shortage of ventilators in LMICs. Methods: The ventilator was built using off-the-shelf materials available via e-commerce and was based on a high-pressure blower, two pressure transducers and an Arduino Nano controller with a digital display (total retail cost <75 USD), with construction details provided open source for free replication. The ventilator was evaluated, and compared with a commercially available device (Lumis 150 ventilator; Resmed, San Diego, CA, USA): 1) in the bench setting using an actively breathing patient simulator mimicking a range of obstructive/restrictive diseases; and b) in 12 healthy volunteers wearing high airway resistance and thoracic/abdominal bands to mimic obstructive/restrictive patients. Results: The designed ventilator provided inspiratory/expiratory pressures up to 20/10cmH2O, respectively, with no faulty triggering or cycling; both in the bench test and in volunteers. The breathing difficulty score rated (1-10 scale) by the loaded breathing subjects was significantly (p<0.005) decreased from 5.45±1.68 without support to 2.83±1.66 when using the prototype ventilator, which showed no difference with the commercial device (2.80±1.48; p=1.000). Conclusion: The low-cost, easy-to-build noninvasive ventilator performs similarly to a high-quality commercial device, with its open-source hardware description, which will allow for free replication and use in LMICs, facilitating application of this life-saving therapy to patients who otherwise could not be treated.
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GARMENDIA, Onintza, RODRÍGUEZ LAZARO, Miguel a., OTERO DÍAZ, Jorge, PHAN, Phuong, STOYANOVA, Alexandrina petrova, DINH-XUAN, Anh tuan, GOZAL, David, NAVAJAS NAVARRO, Daniel, MONTSERRAT, Josep m., FARRÉ VENTURA, Ramon. Low-cost, easy-to-build noninvasive pressure support ventilator for under-resourced regions: open source hardware description, performance and feasibility testing. _European Respiratory Journal_. 2020. Vol. 55, núm. 6, pàgs. 2000846. [consulta: 23 de gener de 2026]. ISSN: 0903-1936. [Disponible a: https://hdl.handle.net/2445/173053]