Professional
Technical
In the Industry Vocabulary Test
positive end-expiratory pressure
Also written as: PEEP — Positive End-Expiratory Pressure
Pressure maintained in airways at end-expiration to prevent alveolar collapse.
Full Definition
A ventilatory support parameter that maintains pressure in the airways and alveoli at the end of expiration, preventing complete alveolar collapse and improving oxygenation. PEEP is measured in centimeters of water (cmH2O) and is a critical component of mechanical ventilation in neonates with respiratory distress. Optimal PEEP levels help maintain functional residual capacity while avoiding overdistension and barotrauma.
Usage
Usage note: Express values with units (cmH2O); hyphenate in compound modifier usage.
In Context
- "The ventilator settings included PEEP of 5 cmH2O to maintain adequate lung recruitment." — Respiratory therapy note
- "Increasing positive end-expiratory pressure to 6 cmH2O improved oxygenation without compromising cardiac output." — Medical progress note
Also known as
PEEP
Contrasted with
zero end-expiratory pressure
Don't confuse with
peak inspiratory pressure
mean airway pressure