Pulmonary edema is usually divided into the following categories:
First, cardiogenic pulmonary edema
Generally, such patients have a history of heart disease, such as acute myocardial infarction, hypertension, heart disease, cardiomyopathy and other diseases. With the rapid onset, patients will suddenly have difficulty breathing, sit up and breathe, cough frequently, and be accompanied by foam sputum. At the same time, the patient's face is pale, his lips are blue and sweaty, and in severe cases, he will cough up a lot of pink foam sputum, and even have syncope and cardiac arrest.
Second, pulmonary edema after lung recruitment
This disease mainly occurs when the lung collapses for more than 3 days and the degree of lung collapse is serious. Pulmonary edema after lung recruitment may be caused by excessive aspiration or inhalation (generally greater than 1500ml) or rapid aspiration. At the onset, the patient showed sudden onset within minutes to hours after lung recruitment, dyspnea, shortness of breath, frequent coughing, coughing up a lot of white or pink foam sputum, irritability and even shock, and extensive moist rales in the lungs.
Third, high altitude pulmonary edema
As the name implies, this kind of pulmonary edema is caused by high altitude hypoxia, which mostly occurs in areas above 4000m above sea level, and the onset time is about 1-3 days or 7- 14 days after entering high altitude areas. At the time of onset, the patient developed fatigue, discomfort, palpitation, shortness of breath, dizziness and persistent irritation of dry cough, similar to altitude sickness. At this time, they should be on high alert, and then there will be pulmonary edema such as sitting breathing, cyanosis, coughing up a lot of pink foam sputum or hemoptysis. In this case, we should retreat to the area below 2000 meters above sea level in time.
Four. Pulmonary vein occlusive disease
Most of these diseases occur before the age of 20, and their clinical manifestations are accompanied by activities such as hypoxemia, polycythemia, pulmonary hypertension, cor pulmonale and right heart failure.
Five, chemical pulmonary edema
Chemical pulmonary edema caused by inhalation of irritating toxic gases.
Six, central nervous pulmonary edema
Animal experiments show that when the head is innovated, the attack rate of pulmonary edema is high and the attack speed is fast, almost within a few seconds after injury, up to several minutes at the longest. In addition, various brain diseases can also cause pulmonary edema, but if the primary disease improves and recovers, pulmonary edema will also improve itself.
The above are the causes and clinical symptoms of six types of pulmonary edema induced by external factors, such as high altitude pulmonary edema and chemical pulmonary edema. We should prevent in advance, control induced conditions and reduce risks. Pulmonary edema caused by pathological changes should be sent to the hospital in time after the attack, so as not to delay the illness.