How long can lung fibrosis last?

Pulmonary fibrosis disease can extensively involve lung parenchyma and lung interstitium, normal lung tissue is replaced by fibrous connective tissue, functional units are destroyed, normal also accompanied by persistent inflammatory damage. Physical examination, often visible signs such as cyanosis of lips, clubbing fingers. Due to chronic hypoxia, patients can also normally show pulmonary hypertension and symptoms and signs of cardiac insufficiency, such as jugular vein filling anger, lower limb edema, hepatosplenomegaly, etc. Pulmonary fibrosis is mostly unknown etiology, at this stage clinical lack of effective treatment drugs, the disease is difficult to control, the disease is expected to survive less than 6 months, most cases eventually died of respiratory failure. Secondary lung infections can progress rapidly and patients can die within as little as two weeks.