To the Editor We read the article by Joseph et al¹ on balloon aortic occlusion with interest. In this study, the authors used the Trauma Quality Improvement Project to examine outcomes of primarily patients with blunt trauma who underwent resuscitative endovascular balloon occlusion of the aorta (REBOA) compared with a propensity score–matched group of patients who did not receive REBOA. The study reported higher mortality and a greater incidence of acute kidney injury and lower extremity amputation in the REBOA group. We applaud the authors for attempting to analyze REBOA outcomes, but fundamental limitations of the propensity score–matching approach applied in this study warrant additional consideration.

致编辑我们感兴趣地阅读了约瑟夫等人¹关于气囊主动脉闭塞的文章。在这项研究中，作者使用创伤质量改善计划来检查主要钝性创伤患者的结果，这些钝性创伤患者接受了复苏性主动脉血管内球囊闭塞（REBOA），而倾向评分匹配组未接受REBOA。该研究报告说，REBOA组的死亡率更高，急性肾损伤和下肢截肢的发生率更高。我们赞扬作者尝试分析REBOA结果，但是本研究中使用的倾向得分匹配方法的基本局限性值得进一步考虑。