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. 2018 Feb 13;18(2):52–56. doi: 10.1016/j.tjem.2018.01.002

Fig. 2.

Fig. 2

BPAP IPAP: Inspiratory positive airway pressure, EPAP: Expiratory positive airway pressure, PS: Pressure Support. Here inspiration is triggered by patient effort and intra alveolar pressure increases; at the end of the inspiration a constant pressure (EPAP) is applied during expiration.