what happens when lung fills with fluid
When the germs that cause pneumonia reach your lungs, the lungs' air sacs (alveoli) become inflamed and fill up with fluid. This causes the symptoms of pneumonia, such as a cough, fever, chills, and trouble breathing. When you have pneumonia, oxygen may have trouble reaching your blood.
Noncardiogenic Pulmonary Edema in Dogs. Noncardiogenic edema is caused by an increased permeability (or the ability to pass through, as by osmosis) of the blood vessels of the lungs. This increased permeability results in the leakage of fluid into the lung, causing edema, or swelling. If this becomes severe, the edema may be accompanied by an inflammatory response and an accumulation of inflammatory cells in the lung.
When the airway is blocked, the blood absorbs the air inside the air sacs (alveoli). Without more air, the sac shrinks. The space where the lung was before the collapse fills up with blood cells, fluids and mucus. It may then become infected. Other factors can lead to a collapsed lung include: A plug of mucus, a tumor or something breathed into the lungs.