Optics

Physics

Internal medicine

Engineering

Surgery

Retrospective cohort study

Ventilation (architecture)

Fistula

Intensive care unit

Mechanical ventilation

Tracheoesophageal fistula

Tertiary referral hospital

Incidence (geometry)

Medicine

Cohort

Mechanical engineering

JAMA Otolaryngology–Head & Neck Surgery

<h3>Importance</h3> Full-thickness tracheal lesions and tracheoesophageal fistulas are severe complications of invasive mechanical ventilation. The incidence of tracheal complications in ventilated patients with coronavirus disease 2019 (COVID-19) is unknown. <h3>Objective</h3> To evaluate whether patients with COVID-19 have a higher incidence of full-thickness tracheal lesions and tracheoesophageal fistulas than matched controls and to investigate potential mechanisms. <h3>Design, Setting, and Participants</h3> This is a retrospective cohort study in patients admitted to the intensive care unit in a tertiary referral hospital. Among 98 consecutive patients with COVID-19 with severe respiratory failure, 30 underwent prolonged (≥14 days) invasive mechanical ventilation and were included in the COVID-19 group. The control group included 45 patients without COVID-19. Patients with COVID-19 were selected from March 1 to May 31, 2020, while the control group was selected from March 1 to May 31, 2019. <h3>Exposures</h3> Patients with COVID-19 had severe acute respiratory syndrome coronavirus 2 infection diagnosed by nasopharyngeal/oropharyngeal swabs and were treated according to local therapeutic procedures. <h3>Main Outcomes and Measures</h3> The primary study outcome was the incidence of full-thickness tracheal lesions or tracheoesophageal fistulas in patients with prolonged invasive mechanical ventilation. <h3>Results</h3> The mean (SD) age was 68.8 (9.0) years in the COVID-19 group and 68.5 (14.1) years in the control group (effect size, 0.3; 95% CI, −5.0 to 5.6). Eight (27%) and 15 (33%) women were enrolled in the COVID-19 group and the control group, respectively. Fourteen patients (47%) in the COVID-19 group had full-thickness tracheal lesions (n = 10, 33%) or tracheoesophageal fistulas (n = 4, 13%), while 1 patient (2.2%) in the control group had a full-thickness tracheal lesion (odds ratio, 38.4; 95% CI, 4.7 to 316.9). Clinical and radiological presentations of tracheal lesions were pneumomediastinum (n = 10, 71%), pneumothorax (n = 6, 43%), and/or subcutaneous emphysema (n = 13, 93%). <h3>Conclusions and Relevance</h3> In this cohort study, almost half of patients with COVID-19 developed full-thickness tracheal lesions and/or tracheoesophageal fistulas after prolonged invasive mechanical ventilation. Attempts to prevent these lesions should be made and quickly recognized when they occur to avoid potentially life-threatening complications in ventilated patients with COVID-19.

Evaluation of the Incidence and Potential Mechanisms of Tracheal Complications in Patients With COVID-19