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Figure 3 | Critical Care

Figure 3

From: Biphasic positive airway pressure minimizes biological impact on lung tissue in mild acute lung injury independent of etiology

Figure 3

Original tracheal, esophageal and transpulmonary pressure and airflow tracings. Top panel: Original tracings of tracheal (black line), esophageal (red line) and transpulmonary (green line) pressure. Note the two levels of continuous positive airway pressure (Phigh = 10 cmH2O and Plow = 5 cmH2O) in controlled and mixed cycles (blue boxes). Black arrows in top and middle panels indicate beginning of inspiration. Middle panel: Original tracings of tracheal (black line), esophageal (red line) and transpulmonary (green line) pressure at different rates of time-cycled controlled breaths: 100, 75 and 50 breaths/min. Bottom panel: Original tracings of esophageal and transpulmonary pressure and airflow. Blue circles: PTP area. BIVENT: biphasic positive airway pressure; Phigh: high level of continuous positive airway pressure; Plow: low level of continuous positive airway pressure; PTP: pressure–time product per breath.

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Critical Care

ISSN: 1364-8535