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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,...
Purpose To compare patient–ventilator interaction during PSV and PAV+ in patients that are difficult to wean. Methods This was a physiologic study involving 11 patients. During three consecutive trials (PSV first trial—PSV1, followed by PAV+, followed by a second PSV trial—PSV2, with the same settings as PSV1) we evaluated mechanical and patient respiratory pattern; inspiratory effort from excursion...
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