• Maria Vargas, Annachiara Marra, Luigi Vivona, Lorenzo Ball, Valeria Marinò, Paolo Pelosi, and Giuseppe Servillo.
• Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples, Federico II, Naples, Italy. vargas.maria82@gmail.com.
• Respir Care. 2018 Aug 1; 63 (8): 1033-1039.

BackgroundThe aim of this bench study was to investigate the performances of 8 devices for noninvasive CPAP.MethodsEight 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.ResultsThe 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).ConclusionsWe 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.Copyright © 2018 by Daedalus Enterprises.

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