A chest x-ray of a patient with nitrogen oxide poisoning shows corn-like shadows all over both lungs. Nitrogen oxides (nitrogenoxides) include a variety of compounds, such as nitrous oxide (N2O), nitric oxide (N0), nitrogen dioxide (NO2), dinitrogen trioxide (N203), dinitrogen tetraoxide (N204) and dinitrogen pentoxide (N205). In addition to nitrogen dioxide, other nitrogen oxides are extremely unstable, light, moisture or heat into nitrogen dioxide and nitric oxide, nitric oxide and into nitrogen dioxide. Therefore, the occupational environment is exposed to a mixture of several gases often called nitrous fumes (gas), mainly nitric oxide and nitrogen dioxide, and nitrogen dioxide is the main. So, what are the symptoms that need to be checked and diagnosed with two lungs full of corn shadows? The following is a list of diagnostic tests for the diagnosis of two lungs full of corn-like shadows. Segmental or lobar faint shadows around the lower lobe of the lung are the x-ray findings of lobar pneumonia. The main target organ of acute nitrogen oxide poisoning is the respiratory system. According to the clinical manifestations, it is divided into: 1. Delayed obstructive capillary bronchitis After inhalation of NOx gas without obvious symptoms of acute poisoning or about 2 weeks after the recovery phase of pulmonary edema, coughing, chest tightness, progressive dyspnea and obvious cyanosis suddenly occur. Dry and wet rales or fine wet rales can be heard in both lungs. A chest X-ray shows that both lungs are covered with corn-like shadows. Long-term exposure to low concentrations (exceeding the maximum permissible concentration) of nitrogen oxides can cause bronchitis and emphysema. 2.Acute severe poisoning Those who show one of the following clinical manifestations are considered to be severely poisoned. (1) pulmonary edema: respiratory distress, increased coughing, coughing up large amounts of white or pink foamy sputum, and obvious cyanosis. Both lungs can be heard as dry and wet? sound. Chest X-ray shows that the two lungs are covered with low density, blurred patchy shadows or cloudy shadows of different sizes, and some of them fuse with each other to form a large patchy shadow. Complications such as pneumothorax and mediastinal emphysema may be present. Blood gas analysis:Arterial partial pressure of oxygen is less than 8kPa (60mmHg) in the presence of high oxygen inhalation (>50%). (2)Coma or asphyxia. (3) Acute respiratory distress syndrome (ARDS). 3.Acute moderate poisoning There is dyspnea, chest urgency, increased cough, coughing sputum or coughing blood sputum, often accompanied by dizziness, headache, weakness, palpitation, nausea and other symptoms, and mild cyanosis. There are dry rales or scattered wet rales in both lungs. Total blood leukocyte count is elevated. Chest X-ray shows reduced lung field translucency, increased, disorganized and blurred lung texture in the form of reticular shadows; or there are localized or scattered dotted shadows, or they fuse with each other to form patchy shadows with blurred edges. Blood gas analysis:The partial pressure of arterial blood oxygen can be maintained at greater than 8kPa (6OmmHg) only when low concentration of oxygen is inhaled (less than 50%). 4.Acute mild poisoning Generally, after a few hours to 72h incubation period of nitrogen oxide inhalation, chest tightness, cough, coughing, etc., accompanied by mild headache, dizziness, weakness, palpitations, nausea, fever and other symptoms; mild congestion of conjunctiva and nasopharynx and scattered dry rales in the lungs. Chest X-ray shows enhanced lung texture or blurred lung texture margins. Blood gas analysis:When breathing air, the arterial partial pressure of oxygen may be lower than the expected value of 1.33-2.66 kPa (l0-2O mmHg). Other common pulmonary examination symptoms: Clinical manifestations of Q fever, X-ray often reveals segmental or lobar faint shadows around the lower lobe of the lung, and the lungs or around the bronchi may show thickening of the texture and infiltration, similar to bronchopneumonia. Hairy glassy corn-like or nodular changes in both lungs are common on chest radiographs and CT in patients with cytomegalovirus pneumonia. Intrapulmonary cavities are a common imaging manifestation of lung diseases, especially tuberculosis. As tuberculosis is controlled, the proportion of pulmonary cavities caused by other diseases is significantly higher, and when pulmonary cavities are found, they should be examined at the hospital as soon as possible to determine the cause as soon as possible to avoid misdiagnosis and mistreatment. Pulmonary edema has blurred and enlarged hilar shadows on x-ray. Chest X-ray shows isolated nodules in the lungs: lung lesions with diffuse corn-like or small nodular shadows in both lungs on X-ray chest, or reticular nodular shadows, which may be accompanied by enlarged hilar lymph nodes.