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Figure 2 | Critical Care

Figure 2

From: Effect of spontaneous breathing on ventilator-induced lung injury in mechanically ventilated healthy rabbits: a randomized, controlled, experimental study

Figure 2

Representative recordings of airway pressure (Paw), flow and volume (Vol) in experimental groups. The upper panel (A) shows that the animal has no spontaneous breathing, the BIPAP is equal to PCV. The mechanical RR was 37 breaths/minute, and the Pmean was 5 cmH2O. The lower panel (B) shows that non-supported spontaneous breathings (black arrows) were possible during each phase of the ventilatory cycle. The mechanical RR was set at 30 breaths/minute, total RR was 40 breaths/min and the Pmean was also 5 cmH2O. A and B had equal I:E ratio (1:1), PI (8 cmH2O) and PEEP (2 cmH2O). BIPAP, biphasic positive airway pressure; I:E, inspiratory-to-expiratory ratio; PCV, pressure control ventilation; PEEP, positive end-expiration pressure; PI, inspiratory pressure; Pmean, mean airway pressure; RR, respiratory rate.

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Critical Care

ISSN: 1364-8535