Objective. The purpose of this study is to explore the effectiveness and safety of Montgomery T-tube placement in treating Cotton-Myer IV subglottic airway atresia after bi-level airway recanalization. Methods. This study is a retrospective study. 11 patients who were treated for IV subglottic airway atresia between January 2017 and January 2019 in the Second Affiliated Hospital of Jiaxing University were involved in this study. The 11 patients all had undergone tracheotomies at our hospital, and they were transferred to the Department of Pulmonary and Critical Care Medicine for Montgomery T-tube placement after bi-level airway recanalization when their subglottic airway was atretic. Patients were observed for their clinical manifestations after placement. The effectiveness of T-tube placement after bi-level airway recanalization was assessed. The incidence of short-term and long-term complications after surgery was assessed. Patients were followed up for 3 to 24 months for evaluating their airway recovery. Results. T-tubes were successfully placed in 11 patients. The atretic airways of all patients were recanalized after treatment. Eight patients got restoration of vocal ability, and 3 patients could only say simple words. None of the patients needed assisted oxygen inhalation. The SpO2 average level was increased from before treatment to after treatment. Patients had significant relief of cough or sputum, and they had less difficulty in dyspnea. All short- or long-term complications were self-relieved or controlled without further malignant progression after treatment by doctors. The average postoperative extubating time was () months. Conclusion. The application of Montgomery T-tube placement in treating Cotton-Myer IV subglottic airway atresia after bi-level airway recanalization is well effective and safe for patients, and it can be promoted in clinical treatment.

中文翻译：

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Montgomery T形管置入治疗双水平气道再通后Cotton-Myer IV声门下气道闭锁的应用

客观的。本研究旨在探讨蒙哥马利T管置入治疗双水平气道再通后Cotton-Myer IV声门下气道闭锁的有效性和安全性。方法。本研究为回顾性研究。2017年1月至2019年1月期间在嘉兴大学第二附属医院接受IV声门下气道闭锁治疗的11例患者参与本研究。11例患者均在我院进行了气管切开术，转入蒙哥马利T-肺危重症医学科当他们的声门下气道闭锁时，在双水平气道再通后放置导管。放置后观察患者的临床表现。评估了双水平气道再通后放置 T 管的有效性。评估了手术后短期和长期并发症的发生率。对患者进行了 3 至 24 个月的随访，以评估他们的气道恢复情况。结果。11 名患者成功置入T管。治疗后所有患者闭锁气道均通畅。8名患者恢复了发声能力，3名患者只能说简单的单词。没有患者需要辅助吸氧。SpO2 平均水平从治疗前治疗后。患者咳嗽或咳痰明显缓解，呼吸困难困难较少。经医生治疗，所有短期或长期并发症均自行缓解或控制，无进一步恶性进展。术后平均拔管时间为（)个月。结论。应用蒙哥马利T形管置入治疗双水平气道再通后Cotton-Myer IV声门下气道闭锁，对患者安全有效，可在临床治疗中推广。