BACKGROUND The concerns regarding air leak following lung surgery or spontaneous pneumothorax include detection and duration. Prior studies have suggested that digital drainage systems permit a shorter chest tube duration and hospital length of stay (LOS) by earlier detection of air leak cessation. We conducted a systematic review to assess the impact of digital drainage on chest tube duration and hospital LOS following pulmonary surgery and spontaneous pneumothorax. METHODS Ovid MEDLINE, PubMed, Embase, the Cochrane Library, Scopus, and Google Scholar were searched from inception through January 2019. We included randomized controlled trials, cohort studies, and case series of adult patients using digital or traditional drainage devices for air leaks of either post-surgical or spontaneous pneumothorax origin. RESULTS Of 1,272 references reviewed, 23 articles were included. Nineteen articles addressed post-operative air leak, while 4 articles pertained to air leak after spontaneous pneumothorax. Thirteen studies were randomized controlled trials. Digital drainage resulted in significantly shorter chest tube duration in 8 of 18 studies and shorter hospital LOS in 6 of 14 studies for post-operative air leak. For post-pneumothorax air leak, digital drainage resulted in a significantly shorter chest tube duration in 2 of 3 studies and hospital LOS in 1 of 2 studies with an analog control group. CONCLUSIONS Most studies show no significant differences in chest tube duration and hospital LOS with digital versus analog drainage systems for patients with air leak after pulmonary resection. For post spontaneous pneumothorax air leak, the limited published evidence suggests a shorter chest tube duration and hospital LOS with analog drainage systems.

中文翻译：

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数字与模拟引流术治疗手术切除或自发性气胸后漏气的系统评价

背景关于肺部手术或自发性气胸后漏气的问题包括检测和持续时间。先前的研究表明，数字引流系统可以通过更早地检测到漏气停止来缩短胸管持续时间和住院时间 (LOS)。我们进行了一项系统评价，以评估数字引流对肺部手术和自发性气胸后胸管持续时间和医院 LOS 的影响。方法 Ovid MEDLINE、PubMed、Embase、Cochrane 图书馆、Scopus 和谷歌学术搜索从一开始到 2019 年 1 月进行了搜索。我们纳入了随机对照试验、队列研究和使用数字或传统引流装置处理漏气的成年患者的病例系列。手术后或自发性气胸起源。结果 审查了 1,272 篇参考文献，收录文章23篇。19 篇文章涉及术后漏气，而 4 篇文章涉及自发性气胸后漏气。13 项研究是随机对照试验。在 18 项研究中的 8 项中，数字引流导致胸管持续时间显着缩短，14 项研究中有 6 项因术后漏气导致住院时间缩短。对于气胸后漏气，在 3 项研究中的 2 项中，数字引流导致胸管持续时间显着缩短，在 2 项研究中的 1 项中使用模拟对照组显着缩短了住院时间。结论 大多数研究表明，对于肺切除术后漏气的患者，使用数字引流系统与模拟引流系统在胸管持续时间和医院 LOS 方面没有显着差异。对于自发性气胸漏气，