Improving Primary Spontaneous Pneumothorax (PSP) Treatment Techniques in VATS

The purpose of this study is to: 1. Evaluate the validity of using abnormal characteristics of the pneumothorax line, as evaluated from chest X-ray film, as the operative indications for video-assisted thoracic surgery (VATS) on primary spontaneous pneumothorax (PSP). 2. Through a randomized double blind controlled trial on patients whose PSP was caused by lung bullae, evaluate the effectiveness of pleurodesis in terms of the rate of recurrence of PSP and the trauma of the operation on patients. 3. Based on the findings, establish selection standards for the timing of surgery to treat PSP by VATS and establish technical specifications for performing operations on different types of lung bullae. The goal is to improve the diagnosis and treatment of PSP so as to reduce the recurrence rate of pneumothorax, reduce the trauma of operation, shorten hospital stays and postoperative recovery time, and provide better services for returning to everyday life and improving the quality of life for patients.