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Objective To evaluate the performance of a new helmet (NH) recently introduced into clinical use relative to that of the standard helmet (SH) in terms of delivering non-invasive continuous positive airway pressure (nCPAP) and pressure support ventilation (nPSV). Design This was a bench study using a mannequin connected to an active lung simulator. The SH was fastened to the mannequin by armpit braces,...
Objective To evaluate patient–ventilator interaction during pressure support ventilation (PSV) delivered with three interfaces [endotracheal tube (ET), face mask (FM), and helmet (H)] at different pressurization times (Timepress), cycling-off flow thresholds (Trexp), and respiratory rates (RR) in a bench study, and with FM and H in a healthy volunteers study. Design Bench study using a mannequin...
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