What does Plateau Pressure measure?

Plateau pressure specifically measures the pressure applied to the small airways and alveoli when there is no airflow in the lungs, typically evaluated during mechanical ventilation. This measurement reflects the elastic recoil of the lung and chest wall at the end of inspiration and helps assess lung compliance. It is particularly useful in identifying the presence of conditions like acute respiratory distress syndrome (ARDS) or pulmonary edema, as it indicates how well the lungs are expanding and if there are any issues such as stiff or collapsed alveoli.

Understanding plateau pressure is crucial for healthcare providers, especially when managing ventilated patients, since high plateau pressures can signify decreased lung compliance, which often requires immediate attention to prevent further respiratory distress or injury.