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Annals of Intensive Care
Fig. 1 | Annals of Intensive Care

Fig. 1

From: Lung aeration and ventilation after percutaneous tracheotomy measured by electrical impedance tomography in non-hypoxemic critically ill patients: a prospective observational study

Fig. 1

Exemplary sequences of four original impedance tracings at the four study time points acquired in two patients. a baseline: before application of muscle relaxant, b NMB: 2 min after application of muscle relaxant, c PDT: after tracheotomy and d RM: after a final standardized recruitment maneuver. The corresponding graphical displays of regional ventilation (“minute images”) are shown above. The top patient (age 57 years, BMI 24 kg/m2; duration of MV 234 h) showed a pronounced decrease in global EELI after PDT which was reversed by application of a RM. The bottom patient (age 54 years; BMI 19 kg/m2, duration of MV 228 h) did not show any marked changes in EELI among the four study time points. This latter result was detected in the majority of the studied patients and represents the overall study findings

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