The normal value of lung compliance in a normal adult is 0.2 liters per centimeter of water column when breathing calmly.
Lung compliance refers to the change in volume per unit of pressure and reflects the elasticity of lung tissue. In normal adults, lung compliance is about 0.2 L/cm water column during calm breathing.
In patients with pulmonary fibrosis, pulmonary edema, and acute respiratory distress syndrome, lung compliance may be reduced and patients may experience inspiratory dyspnea.
On the contrary, in patients with emphysema, because the elastic components of the lungs are largely destroyed, the lung retraction force is reduced, the compliance of the lungs increases, and the patient may experience expiratory dyspnea.
In the event of abnormal lung compliance or symptoms of dyspnea, it is advisable to seek medical attention for the necessary intervention and treatment.