Abstract:Objective Grading pleural adhesion of tuberculous pleural effusion by medical thoracoscopy, then explore the possible influential factors. Methods 99 patients with tuberculous pleural effusion were diagnosed by local anesthesia-assisted thoracoscopy, and the pleural adhesion was divided into 6 levels. With degree of plueral adhesion as dependent variable and general conditions including pH, total protein, lactate dehydrogenase, adenosine deaminase, glucose, percentage of mononuclear cells, age, duration, peripheral blood white blood cell count, C- reactive protein, pure protein derivatives test as independent variables, then screened the influencing factors with logistic regression analysis of ordered multi classification. Results The degree of pleural adhesion in 99 patients was grade 0 (n = 12), grade 1 (n = 33), grade 2 (n = 21), grade 3 (n = 21), grade 4 (n = 12), grade 5 (n = 0), respectively. Pleural adhesion was significantly related to pH of pleural effusion and duration of disease(P < 0.05). Conclusions The pleural adhesion of tuberculous pleural effusion could be classified by medical thoracoscopy. The value of pH in pleural effusion was the protective factor, and the duration of disease was the risk factor for the increase in the degree of pleural adhesion. Therefore, pH and duration are helpful to the prediction of the degree of pleural adhesion.