• Toshinori Maezawa, Machi Yanai, Ji Young Huh, and Koichi Ariyoshi.
• Department of Emergency Medicine, Kobe City Medical Center General Hospital, Japan. Electronic address: toshinori_maezawa@kcho.jp.
• Am J Emerg Med. 2020 Dec 1; 38 (12): 2658-2660.

IntroductionTube thoracostomy is an important treatment for traumatic hemothorax and pneumothorax. The optimal tube diameter remains unclear. To reduce invasiveness, we use small-bore chest tubes (≤20 Fr) for all trauma patients for whom tube thoracostomy is indicated in our emergency department (ED). The aim of this study was to investigate the effectiveness and safety of small-bore tube thoracostomy for traumatic hemothorax or pneumothorax.MethodWe conducted a retrospective observational study at a single emergency medical center. This study included adult patients (≥18 years old) who had undergone tube thoracostomy for chest trauma in the ED during the 5 years from October 2013 to September 2018. We used 20 Fr chest tubes or 8 Fr pigtail catheters. The examined outcome was tube-related complications, such as tube obstruction, retained hemothorax, and unresolved pneumothorax.ResultsA total of 107 tube thoracostomies were performed in 102 patients. The mean Injury Severity Score of these patients was 17.8 (±9.6), and the mean duration of the tube placement period was 3.9 days (±1.8). Eight patients developed tube-related complications (7.8%) (retained hemothorax: 4 patients (3.9%), unresolved pneumothorax: 4 patients (3.9%)). None of these cases were caused by tube obstruction. Although the drainage itself was effective, they underwent definitive invasive interventions to stop bleeding or air leak.ConclusionOur study showed that the use of small-bore (≤20 Fr) chest tubes to treat traumatic hemothorax/pneumothorax achieved the purposes of tube thoracostomy. It might be possible to safely manage chest trauma with small-bore chest tubes.Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.

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