Reason: Rest can reduce physical exertion, slow down blood circulation, slow down breathing, and help to prolong the detention time of drugs in the affected parts.

Etiology: Mycobacterium tuberculosis belongs to Actinomyces, Mycobacterium of Mycobacteriaceae, which is a virulent acid-resistant bacterium. Mainly divided into human, cattle, birds, rats and other types. Human-type bacteria are the main pathogens, and bovine-type bacteria are rarely infected.

Extended data:

Clinical manifestations of pulmonary tuberculosis:

1. Symptoms: there is a history of close contact with tuberculosis, and the onset can be acute or slow, mostly low fever (especially in the afternoon), night sweats, fatigue, anorexia, emaciation, and menstrual disorder in women. Respiratory symptoms include cough, expectoration, hemoptysis, chest pain, chest tightness or dyspnea in different degrees.

2. Signs: Lung signs vary according to the severity of the disease and the scope of the lesion.

(1) Early stage: it is difficult to find positive signs in a small range of tuberculosis, and those with a wide range of lesions will make a sound by percussion, with aggravated tremor, low alveolar respiration and moist rales.

(2) Late stage: tuberculosis forms fibrosis, and local contraction causes pleural collapse and mediastinal displacement. At the early stage of tuberculous pleurisy, there is pleural fricative sound. When a large amount of pleural effusion is formed, the chest wall is full, and the percussion is cloudy, twitching and breathing sounds are reduced or disappeared.

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