Humidified Nebulizer to Prevent Tracheostomy Cannula From Obstruction During the COVID-19 Pandemic
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Background and Objectives Obstruction of tracheostomy cannula (T-cannula) may result in devastating results, such as hypoxic brain injury and even death. Since the recent coronavirus disease 2019 (COVID-19) outbreak, nebulizing for humidification to prevent tracheostomy cannula obstruction has been controversial due to concerns about viral spreading through aerosol. The present study evaluated the risk of cannula obstruction and thereby suggest an adequate prevention method during the COVID-19 pandemic.Materials and Method From January 2020 to October 2020, we retrospectively analyzed medical records of patients who underwent tracheostomy at the Department of Otolaryngology at Asan Medical Center, Seoul, Korea. The frequency of tracheostomy tube obstruction was compared in patients who were or were not nebulized. Additional clinical variates included patient’s sex, age, smoking history, medical history, and current medical history were evaluated.Results Enrolled 226 patients were divided into obstruction (n=62) and non-obstruction group (n=164). T-cannula obstruction was related to period of tracheostomy, smoking history, pulmonary diseases, and nebulized use. In Cox proportional hazards analysis, ex-smoking (hazard ratio [HR]=1.962, p=0.033), current smoking (HR=2.108, p=0.027), and pulmonary diseases (HR=1.740, p=0.038) were related to T-cannula obstruction. When other factors were corrected, the risk of tracheostomy obstruction was significantly decreased in the nebulized group (HR=0.216, p<0.001). Mortality rate of this group was affected by only pulmonary diseases.Conclusion Nebulizer can be applied safely and helps to avoid the risk of T-cannula obstruction.
Abstract
Background and Objectives Obstruction of tracheostomy cannula (T-cannula) may result in devastating results, such as hypoxic brain injury and even death. Since the recent coronavirus disease 2019 (COVID-19) outbreak, nebulizing for humidification to prevent tracheostomy cannula obstruction has been controversial due to concerns about viral spreading through aerosol. The present study evaluated the risk of cannula obstruction and thereby suggest an adequate prevention method during the COVID-19 pandemic.Materials and Method From January 2020 to October 2020, we retrospectively analyzed medical records of patients who underwent tracheostomy at the Department of Otolaryngology at Asan Medical Center, Seoul, Korea. The frequency of tracheostomy tube obstruction was compared in patients who were or were not nebulized. Additional clinical variates included patient’s sex, age, smoking history, medical history, and current medical history were evaluated.Results Enrolled 226 patients were divided into obstruction (n=62) and non-obstruction group (n=164). T-cannula obstruction was related to period of tracheostomy, smoking history, pulmonary diseases, and nebulized use. In Cox proportional hazards analysis, ex-smoking (hazard ratio [HR]=1.962, p=0.033), current smoking (HR=2.108, p=0.027), and pulmonary diseases (HR=1.740, p=0.038) were related to T-cannula obstruction. When other factors were corrected, the risk of tracheostomy obstruction was significantly decreased in the nebulized group (HR=0.216, p<0.001). Mortality rate of this group was affected by only pulmonary diseases.Conclusion Nebulizer can be applied safely and helps to avoid the risk of T-cannula obstruction.
참고문헌 (17)
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