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Objective The present study aimed to evaluate the clinical effectiveness of endoscopic bronchial occlusion (EBO) with endobronchial Watanabe spigots (EWSs) for the management of prolonged pulmonary air leaks, such as intractable pneumothorax, pyothorax with bronchial fistula, and postoperative air leakage. Methods This was a retrospective study. Between April 2005 and March 2018, we recruited 21 patients with intractable pneumothorax (10 cases), pyothorax with bronchial fistula (7 cases), and postsurgical pulmonary fistula (4 cases) in whom appropriate drainage for 2 weeks had been unsuccessful and who were unsuitable for surgery. An EWS was inserted using a flexible bronchoscope via an endotracheal or a tracheostomy tube. Results The mean number of sessions with EWS procedures was 1.94, and the mean number of inserted EWS per patient was 6.5. In addition to EWS procedures, pleural washing and pleural adhesion therapy were performed in all cases with pyothorax, whereas pleural adhesion therapy was performed in three patients with pneumothorax. The successful treatment rate was 85.7%. Reduction of air leakage was observed in 19/21 patients. The mean duration of reduction of air leaks was 4.1 days (median, 1; range, 0-24 days) following EWS procedures. The mean duration from tube insertion to chest tube removal was 43.4 days (median, 29; range, 16-105 days). Complications included spigot migration and infection (aspergillosis); no complications caused significant mortality. Conclusion Performing EBO using an EWS appears to be a reasonable option for the management of intractable pneumothorax, pyothorax with pulmonary fistula, and postoperative air leakage.

internal medicine

Clinical Evaluation of Endoscopic Bronchial Occlusion with an Endobronchial Watanabe Spigot for the Management of Intractable Pneumothorax, Pyothorax with Bronchial Fistula, and Postoperative Air Leakage