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Figure 1 | Critical Care

Figure 1

From: High flow biphasic positive airway pressure by helmet – effects on pressurization, tidal volume, carbon dioxide accumulation and noise exposure

Figure 1

Setup for the study of the HF-BiPAP system. The inspiratory tube was directly connected to the hospital's gas supply via a flow meter, while the expiratory tube was connected to the HF-BiPAP. During conventional PSV and BiVent, the inspiratory and expiratory tubes were connected to the ventilator. BiVent = time-cycled pressure controlled switching between two continuous positive airway pressure levels; HF-BiPAP = high flow biphasic positive airway pressure; PSV = pressure support ventilation.

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Critical Care

ISSN: 1364-8535