肺结核是由结核杆菌引起的一种慢性传染病，按病变的活动程度分为进展期，吸收好转期和稳定期三期。一般吸收好转期和稳定期为病情好转，进展期为恶化。其判断应根据临床症状、X线表现和排菌情况综合分析，可参考以下指标。llta床症状：注意观察有无午后低热、夜间盗汗、食欲不 Tuberculosis is a chronic infectious disease caused by Mycobacterium tuberculosis, according to the degree of activity of the disease is divided into advanced, absorption and transition period of stable three. The general absorption of good and stable period for the improvement of the disease, the progress of deterioration. The judgment should be based on clinical symptoms, X-ray performance and a comprehensive analysis of bacteria discharge, refer to the following indicators. llta bed symptoms: pay attention to observe whether afternoon heat, night sweats, loss of appetite