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The clinical manifestations of viral pneumonia are generally mild, The symptoms of mycoplasmal pneumonia are similar. Slow onset, headache, fatigue, fever, cough, and cough a small amount of sticky. Signs are often absent. X-ray examination of lung inflammation is spotted, flaky or evenly shadowed. The total number of white blood cells can be normal, reduced or slightly increased. The course of the disease is usually 1 to 2 weeks. In patients with immunodeficiency, viral pneumonia is often more severe, with persistent hyperthermia, palpitations, shortness of breath, cyanosis, extreme exhaustion, with shock, heart failure and azotemia. Due to alveolar interstitial and alveolar edema, severe respiratory distress syndrome can occur. The physical examination may have a wet rales. X-ray examination showed diffuse nodular infiltration, more common in two 2/3 lung fields.
1. History, symptoms:
The onset is slow, and there are many dry throats and sore throats at the beginning. Sneezing, salivation, fever, headache, anorexia and body aches and other upper respiratory symptoms, lesions involving the lung parenchyma may have cough (mostly paroxysmal dry cough), chest pain, shortness of breath and other symptoms, medical history should pay special attention to the presence or absence of immunodeficiency Or immunosuppressive conditions.
Second, physical examination found:
The physical signs are not obvious, and sometimes the small blisters can be heard in the lower part of the lungs.
Three, auxiliary examination:
(1) X-ray chest, the lungs are reticular shadows, the lungs are thickened and blurred, and the severe lungs are diffused in the middle and lower fields. Sexual nodular shadows are rare.
(2) Blood test: The white blood cell count is generally normal, but it can be slightly higher or lower. When the bacterial infection is secondary, the white blood cell count and neutrophils can be increased.
(3) Pathogen examination: virus culture is difficult and difficult to carry out routinely. The sputum smear of pneumonia patients only found scattered bacteria and a large number of nucleated cells, or could not find The pathogen should be suspected of viral pneumonia.
(4) Serological examination: duplicate serum in the acute phase and recovery phase, supplementation test, neutralization test or serum inhibition test antibody titer increased by 4 times or more has a diagnostic significance. In recent years, the use of serum to monitor specific antibodies to the virus has helped early diagnosis. Immunofluorescence, enzyme-linked immunosorbent assay, enzyme labeling method, horseradish peroxidase-anti-horse root peroxidase method, etc., can be used for rapid diagnosis of virus specificity.
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