@article {Vargasrespcare.05930, author = {Maria Vargas and Annachiara Marra and Luigi Vivona and Lorenzo Ball and Valeria Marin{\`o} and Paolo Pelosi and Giuseppe Servillo}, title = {Performances of CPAP Devices With an Oronasal Mask}, elocation-id = {respcare.05930}, year = {2018}, doi = {10.4187/respcare.05930}, publisher = {Respiratory Care}, abstract = {BACKGROUND: The aim of this bench study was to investigate the performances of 8 devices for noninvasive CPAP.METHODS: Eight devices for noninvasive CPAP with an orofacial mask were studied: Ventumask, Ventumask 30, EasyVent, EasyVent Emergency, Compact Model II, Flowone, Superflow, Boussignac CPAP valve. Each device was tested at oxygen input flows from 5 to 20 L/min, and the output gas flow was measured in static conditions. Each device was evaluated during a eupneic and a tachypneic simulated breathing test.RESULTS: The gas output flow generated by each device increased with higher oxygen input flow; EasyVent and Flowone produced the highest output flow (P \< .001). At the simulated eupneic breathing test, Superflow and EasyVent showed a more stable pressure swing at different PEEP levels, whereas the other masks had a greater swing, between 10 and 15 cm H2O PEEP (P = .002 for all pairwise comparisons). During the tachypneic breathing test, the pressure swing was stable with Flowone and EasyVent (P = .055), whereas it had increased with other masks (P = .002 for all pairwise comparisons).CONCLUSIONS: We found a significant variation in the performances of the 8 CPAP devices examined in this study. The technical characteristics and limitations of different CPAP devices should be considered when using in patients with hypoxemic acute respiratory failure.}, issn = {0020-1324}, URL = {https://rc.rcjournal.com/content/early/2018/05/29/respcare.05930}, eprint = {https://rc.rcjournal.com/content/early/2018/05/29/respcare.05930.full.pdf}, journal = {Respiratory Care} }