
Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Positive end expiratory pressure
Introduction
Synonyms and keywords: PEEP
Overview
Overview
Positive end-expiratory pressure (PEEP) is a term used in mechanical ventilation to denote the amount of pressure above atmospheric pressure present in the airway at the end of the expiratory cycle. The equivalent in a spontaneously breathing patient is CPAP. PEEP is set on the ventilator.
Physiology
Physiology
PEEP improves gas exchange by preventing alveolar collapse, recruiting more lung units, increasing functional residual capacity, and redistributing fluid in the alveoli.
Contraindications
Contraindications
- Increased Intracranial Pressure
- Pneumothorax that has not been treated
- Bronchopleural fistula
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
