What is the allowed volume threshold for chest tube removal after lobectomy: A randomized controlled trial

INTRODUCTION: The management of chest tubes and the volume threshold for chest tube removal after pulmonary resection remain controversial. Several studies have reported the volume threshold for chest tube removal following pulmonary resection to range from 200 to 450 mL/24 h. METHODS: A prospective randomized single-blind clinical study was performed with data collected from patients who had undergone lobectomy and lymph node dissection at our hospital between June 2014 and April 2018. The patients were randomly assigned to the High group (removal of chest tube when drainage was <450 mL/24 h) or Low group (removal of chest tube when drainage was <200 mL/24 h) at postoperative day (POD) 2. The primary end point was drainage time. The secondary end point were complications and rate of thoracentesis. RESULTS: Seventy patients met the inclusion criteria and were randomized, with 35 patients assigned to the High group and 35 patients to the Low group. The average duration of chest tube placement was 2.05 days in the High group and 2.31 days in the Low group. The duration of chest tube placement in the High group was significantly shorter than that in the Low group (p = 0.02). There were no major postoperative complications in either group. Thoracentesis was not necessary in either group. CONCLUSION: Pleural effusion of 450 mL/day is tolerable as the volume threshold for the removal of a chest tube after pulmonary resection.