Analysis of clinical data and missed diagnosis of pulmonary tuberculosis with positive sputum tuberculosis in old patients

Objective To analyse clinical data and missed diagnosis of pulmonary tuberculosis associated with lung infection in old patients.Methods Clinical data of 70 old patients with pulmonary tuberculosis associated with lung infection in a hospital in recent three years were analysed.Results All 70 patients were type Ⅲ pulmonary tuberculosis,the main manifestations were fever,cough,expectoration,hemoptysis,lung rales,(64.29%) of patients were with a history of tuberculosis,60% were PPD negative;chest X-ray suggested the lesion were mainly distributed at apicoposterior segment of upper lobes and dorsal segment of lower lobes(65 cases) and basal segment of lower lobes(5 cases).57 and 13 cases of lung infection was caused by bacteria and fungi respectively.58 cases were diagnosed as lung infection at initial diagnosis,(82.86%) of pulmonary tuberculosis diagnosis were missed.Conclusion Pulmonary tuberculosis with positive bacteria sputum is apt to develop lung infection,and missed diagnosis is high,screen of pulmonary tuberculosis in old patients should be strengthened.