Abstract: Objective To analyze rick factors for postoperative recurrence of spontaneous pneumothorax surgery. Methods The clinic characteristics of 1 128 patients who received spontaneous pneumothorax surgery in Tianjin Chest Hospital were collected from January 2009 to March 2015. The relationship between clinic characteristics and the pulmonary bullae was analyzed. Logistic regression analysis was used to assess factors affecting the postoperative relapse of spontaneous pneumothorax. Results The pulmonary bullae were found in 877 patients of 1 128 during the operation. The incidence of pulmonary bullae was significantly high in patients with age below 25 years compared with patients over 25 years (P＜0.05). The duration of surgery was significantly longer in patients with pulmonary bullae compared with that of patients without pulmonary bullae (P＜0.05). Postoperative recurrence occurred in 21 cases, with a recurrence rate of 1.86% . Logistic regression analysis showed that pulmonary bullae, pleurodesis without pleura friction, delayed drainage duration (＞ 3 d) were independent risk factors of postoperative recurrence for spontaneous pneumothorax (P＜0.05). Conclusion Pulmonary bullae, pleurodesis without pleura friction and delayed drainage duration are risk factors of postoperative recurrence for spontaneous pneumothorax, which should be paid more attention in clinic.

Key words: pneumothorax, recurrence, pleurodesis, drainage, Logistic models, risk factors, lung bullae