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Fig. 2 | Critical Care

Fig. 2

From: Dorsal recruitment with flow-controlled expiration (FLEX): an experimental study in mechanically ventilated lung-healthy and lung-injured pigs

Fig. 2

a Global impedance curve of pig number 7 before established lung injury. To help visualization, the different ventilation modes are separated by vertical lines. The elevation of the baseline of the global impedance curve during flow-controlled expiration (FLEX) was significant (p < 0.001) for all pigs regardless of whether the lung was healthy or injured. The local impedance curves representing the ventral and dorsal areas of the lung showed a similar significant elevation under FLEX ventilation. b, c Sequence of several breaths extracted from the global impedance curve of the electrical impedance tomography recordings of pig number 1. In b, breaths using volume-controlled ventilation (VCV1) are depicted. In c, breaths during usage of FLEX are shown. The time of no flow was significantly reduced under FLEX (p < 0.001) and the associated impedance decrease δZ was significantly less (p = 0.04) than under VCV only

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