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Figure 1 | Critical Care

Figure 1

From: Regional lung aeration and ventilation during pressure support and biphasic positive airway pressure ventilation in experimental lung injury

Figure 1

Distributions of hyperaerated (hyper), normally aerated (normal), poorly aerated (poorly) and nonaerated (non) compartments at end-expiration during pressure support ventilation (PSV), biphasic positive pressure ventilation + spontaneous breaths (BIPAP+SB mean ), controlled (BIPAP+SB controlled ) and spontaneous (BIPAP+SB spont ) breath cycles. Calculations were performed for different lung zones from ventral to dorsal (1 = ventral, 2 = mid-ventral, 3 = mid-dorsal, and 4 = dorsal) at lungs apex, hilum, and base using dynamic computed tomography. The contributions of BIPAP+SBspont and BIPAP+SBcontrolled to BIPAP+SBmean were weighted by their respective rates (weighted mean). Bars and vertical lines represent means and standard deviations, respectively. * P < 0.05 vs. PSV; † P < 0.05 vs. BIPAP+SBcontrolled.

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Critical Care

ISSN: 1364-8535