Positive End Expiratory Pressure (PEEP)
Positive end expiratory pressure is the amount of pressure in the breathing circuit at the end of exhalation. The initial PEEP for patients admitted to ICU is usually between 5 and 10 cm H2O.
Figure 1. Example of a pressure/time curve for a patient on mechanical ventilation. Paw= airway pressure, Insp = inspiratory phase and exp = expiratory phase. PEEP in this example is about 10 cm H20.