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Fig. 3 | Critical Care

Fig. 3

From: Neural versus pneumatic control of pressure support in patients with chronic obstructive pulmonary diseases at different levels of positive end expiratory pressure: a physiological study

Fig. 3

Neural and mechanical effort during neurally triggered and cycled-off pressure support (PSN) and pneumatically triggered and cycled-off pressure support (PSP) at different levels of extrinsic positive end-expiratory pressure (PEEPe). Top panel: peak diaphragm electrical activity (ÊAdi, y-axis) for PSP (blue bars) and PSN (red bars) for triggering (darker bars) and total inspiration (darker bars + lighter bars) with increasing PEEPe (x-axis). Bottom panel: mean inspiratory deflection in esophageal pressure (ΔP̅es, y-axis) for PSP (blue bars) and PSN (red bars) for triggering (darker bars) and total inspiration (darker bars + lighter bars) with increasing PEEPe (x-axis). Median and interquartile ranges are presented. For clarity, a corresponding statistical description is provided in Table 4

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