Fig. 4From: Lung aeration and ventilation after percutaneous tracheotomy measured by electrical impedance tomography in non-hypoxemic critically ill patients: a prospective observational studyMean global tidal variation during each measurement phase: a before neuromuscular blockade (baseline), b after neuromuscular blockade (NMB), c after tracheotomy (PDT) and d after a subsequent recruitment maneuver (RM) (n = 29; RM ANOVA; p > 0.05)Back to article page