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Fig. 1 | Critical Care

Fig. 1

From: Nasal pressure swings as the measure of inspiratory effort in spontaneously breathing patients with de novo acute respiratory failure

Fig. 1

A Simultaneous positioning of esophageal catheter for ΔPes assessment and nasal plug made of hypoallergenic foam ear plug equipped with a 16 Gauge polyurethane intravenous cannula for ΔPnos measurements. The contralateral nostril was kept open. B, C Simultaneous assessment of ΔPnos and ΔPes during unsupported spontaneous breathing, showing in phase waveforms with a 196 ms time latency of ΔPnos over the onset of inspiratory effort captured by ΔPes. D, E Simultaneous assessment of ΔPnos and ΔPes, showing decremental inspiratory effort after NIV placement

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Critical Care

ISSN: 1364-8535