PT  - JOURNAL ARTICLE
AU  - Maria Vargas
AU  - Annachiara Marra
AU  - Luigi Vivona
AU  - Lorenzo Ball
AU  - Valeria Marinò
AU  - Paolo Pelosi
AU  - Giuseppe Servillo
TI  - Performances of CPAP Devices With an Oronasal Mask
AID  - 10.4187/respcare.05930
DP  - 2018 Aug 01
TA  - Respiratory Care
PG  - 1033--1039
VI  - 63
IP  - 8
4099  - http://rc.rcjournal.com/content/63/8/1033.short
4100  - http://rc.rcjournal.com/content/63/8/1033.full
AB  - 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.