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Figure 4 | Critical Care

Figure 4

From: Electrical impedance tomography measured at two thoracic levels can visualize the ventilation distribution changes at the bedside during a decremental positive end-expiratory lung pressure trial

Figure 4

Tidal impedance variation divided by tidal volume obtained from (A) regions of interest (ROIs) to include all anatomical lung tissue and from ROIs selected to minimize caudal diaphragmatic influence (ROI: 4 × 32 pixels) (B). (C) Center of gravity index. Measurements were taken during decremental positive end-expiratory pressure (PEEP) steps at the caudal and cranial thoracic levels. Data are as means + standard errors of the mean. Significance compared to 15 cm H2O positive end-expiratory pressure (PEEP): *P < 0.05, **P < 0.01, ***P < 0.001.

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Critical Care

ISSN: 1364-8535