PEEP
Pronunciation: PEEP (pronounced as word)
Also written as: PEEP — Positive End-Expiratory Pressure
Positive end-expiratory pressure; pressure maintained in the airway at the end of expiration during mechanical ventilation.
Full Definition
Positive end-expiratory pressure (PEEP) is the pressure maintained in the airways and alveoli at the end of expiration during mechanical ventilation or CPAP. PEEP prevents alveolar collapse, improves functional residual capacity, and enhances oxygenation by maintaining lung recruitment. In neonatal ventilation, PEEP is typically set between 4-8 cmH2O depending on the underlying lung pathology, with careful monitoring to avoid overdistension and compromised venous return.
Usage
Usage note: Always specify pressure value in cmH2O; essential parameter for ventilator management.
In Context
- "PEEP was increased from 5 to 6 cmH2O to improve oxygenation and reduce FiO2 requirements." — Ventilator management note
- "The infant was maintained on CPAP with 5 cmH2O of PEEP for ongoing respiratory support." — Respiratory therapy documentation