What is static compliance in ards?

Static compliance in Acute Respiratory Distress Syndrome (ARDS) refers to the measurement of the lung's ability to expand under a constant pressure, typically assessed during mechanical ventilation. It is calculated as the change in lung volume divided by the change in pressure applied to the lung, specifically the plateau pressure minus the end-expiratory pressure. A decrease in static compliance indicates stiffer lungs, which is common in ARDS due to factors like atelectasis and pulmonary edema. Monitoring static compliance helps guide ventilation strategies and assess the severity of lung injury.