Hilar shadows

Pulmonary edema blurs and enlarges hilar shadows on X-ray examination. Pulmonary edema refers to the imbalance in the generation and return of tissue fluid in the lung due to some reason, so that a large amount of tissue fluid cannot be absorbed by the pulmonary lymphatic and pulmonary venous systems within a short period of time. In the alveoli, interstitial lungs, and small bronchial tubes, which causes severe impaired pulmonary ventilation and ventilation. Clinical manifestations are extreme dyspnea, sitting breathing, cyanosis, sweating, paroxysmal cough with a large amount of white or pink Color foamy sputum, bilateral lungs covered with symmetric wet rales, chest X-ray film can see the two lungs butterfly-shaped fuzzy shadow, shock may occur in the late stage or even death. Early arterial blood gas analysis may have low O2, low CO2 partial pressure, severe lack of O2, CO2 retention, and mixed acidosis, which is one of the clinically critical diseases.