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Annals of Intensive Care
Fig. 2 | Annals of Intensive Care

Fig. 2

From: Use of airway pressure-based indices to detect high and low inspiratory effort during pressure support ventilation: a diagnostic accuracy study

Fig. 2

Example of discarded measurement of pressure muscle index during offline analysis. A Too short plateau airway pressure (Paw) during end-inspiratory occlusion (set a priori as shorter than 1.5 s); B presence of air leak, which is indicated by a continued decrease in Paw without reaching a plateau simultaneous with a relatively stable plateau esophageal pressure (Pes) during end-inspiratory occlusion; C suspicion of additional inspiratory effort. During the end-inspiratory occlusion, additional inspiratory effort is suspected by the simultaneous decrease of Paw and Pes (arrows); D suspicion of additional expiratory effort. During the end-inspiratory occlusion, additional expiratory effort was suspected by the increase in Paw and Pes (arrows)

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