Due to its widespread applications, Positive End Expiratory Pressure (PEEP) has been itself emerged as a separate entity in mechanical ventilation. PEEP increases the end-expiratory or baseline airway pressure to a value greater than atmospheric pressure. It is often used to improve patient s oxygen status, especially in refractory hypoxemia. Positive End Expiratory Pressure is not a separate mode; rather it is applied in conjunction with other modes of ventilation.
Physiology of Positive End Expiratory Pressure- Positive End Expiratory Pressure (PEEP) inflates collapsed alveoli and maintains alveolar inflation during exhalation. Thus, PEEP recruits more alveoli and improves the activity of functioning alveoli. PEEP provides more area for diffusion, and time for gaseous exchange thus improves oxygenation. Safety Level- Positive End Expiratory Pressure level below 10 cm of water is…
