Examination for mycoplasma pneumonia

The examination of mycoplasma pneumonia includes imaging examination, etiological examination and routine examination, and X-ray examination mostly shows unilateral lesions, most of which are in the lower lobe, sometimes only the hilar shadow is weighted, and most of them are irregular cloud-like pulmonary infiltrates, extending from the hilum to the lobes of the lungs, especially the two lower lobes are the most common, most of them are lobar consolidation, and atelectasis can be seen.Often, one place dissipates and a new infiltration occurs elsewhere. Sometimes there are bilateral diffuse reticular or nodular infiltrate opacities or interstitial pneumonia without segmental or lobar consolidation. Subtle signs and prominent opacities on chest x-ray are a hallmark of the disease. Chest CT may provide more diagnostic information than a common chest x-ray and can help distinguish it from other lung diseases such as tuberculosis, but the indications for CT should be closely understood. Etiological examination, isolation of Mycoplasma pneumoniae from the throat, nasal cavity, pleural fluid or body fluid of the child from isolation and culture is a reliable standard for diagnosing infection, but routine culture takes 10~14 days, or even longer, and has little value for early diagnosis.

Serological tests specific to the following: gelatin particle agglutination test and enzyme-linked immunosorbent assay, both of which can confirm the diagnosis of Mycoplasma pneumoniae infection when the antibody titer is ≥4-fold or decreased in the convalescent and acute phases; Non-specific tests include the cold agglutination test, which has a positive rate of only 50% at the time of infection, and some viral infections can induce the production of serum cold agglutinin, which is only of reference value.