Pulmonary function changes after uniportal video-assisted thoracoscopic anatomical lung resection

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Abstract
Background: Some early staged NSCLC appears as non-subpleural peripheral pulmonary nodules. Thoracic surgeons usually adopt extended wedge resection or segmentectomy to remove these nodules. Video-assisted thoracoscopic surgery (VATS) has been carried out extensively worldwide in lung surgeries. The purpose of this study was to evaluate changes in postoperative pulmonary function changes after undergoing VATS wedge resection and VATS segmentectomy anatomical lung ‏resection. Methods: This retrospective study was carried out on 80 patients scheduled for UVATS sublobar resection lung surgery. Patients were divided equally into two groups according to the surgical procedures, VATS wedge resection group, and VATS segmentectomy group. All patients were subjected to full history taking length of stapler on CT scan, preoperative and postoperative pulmonary function tests include Forced vital capacity (FVC), Forced expiratory volume (FEV1), FEV1/FVC ratio, operation characteristics, postoperative recovery, treatment and hospitalization expenses. Results: FVC loss after segmentectomy was significantly greater than after wedge resection (17.1 ± 1.58%, vs. 7.9 ± 1.59% P < 0.001). Preoperative pulmonary function (FEV1 and FVC) was statistically different between the two groups of patients. Postoperative pulmonary function (FEV1, FVC and FEV1/-FVC) was statistically different between the two groups of patients.

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