What does plateau pressure measure in mechanical ventilation?

Plateau pressure specifically measures the pressure applied to the small airways and alveoli at the end of inspiration. It is obtained from a static measurement when the airflow has stopped, making it indicative of the pressure within the lungs when they are fully inflated. This reading helps with assessing lung compliance; lower plateau pressures typically reflect better compliance, while higher pressures may suggest potential issues such as lung stiffness or decreased compliance.

Understanding plateau pressure is crucial in mechanical ventilation settings because it provides insight into the pressures that are necessary to inflate the alveoli and achieve adequate ventilation. Monitoring this measurement is vital for preventing ventilator-induced lung injury, as excessively high plateau pressures can lead to overdistension of the alveoli. This information is essential for setting appropriate ventilator parameters and ensuring patient safety during mechanical ventilation.