Comparative impact of COVID-19 infection on tracheostomy patients

Purpose: We study outcomes after tracheostomy in COVID-19 positive patients versus COVID-19 negative patients who underwent tracheostomy during the same time frame in an effort to better understand the influence of COVID-19 despite variances in virus strain and treatment practices.

Materials and methods: This is a retrospective cohort study of all Veterans Affairs centers nationwide, using data provided by the Veterans Affairs Informatics and Computing Infrastructure. Our cohort consisted of veteran patients who underwent tracheostomy between March 2020 and September 2022. Patients who tested positive for COVID-19 within three months prior to tracheostomy were compared to patients who had never tested positive for COVID-19.

Results: 956 patients were included in the analysis, and nearly 96 % of these patients were male. The COVID-19 positive group spent one more week on the ventilator and experienced lower rates of successful ventilator weaning (hazard ratio 0.74, 95 % confidence interval [0.62, 0.88], P < 0.001). Survival curves were non-proportional, and while the COVID-19 positive group had higher 30-day mortality (relative risk 1.37, 95 % confidence interval [1.09, 1.73], P = 0.007), the COVID-19 negative group had higher long-term mortality.

Conclusions: Our findings suggest that while infection with COVID-19 has a significant effect on short-term outcomes after tracheostomy, chronic comorbidities seem to have the more enduring impact. In spite of prolonged ventilation and higher short-term mortality, tracheostomy in COVID-19 can be a positive intervention that does not necessarily predestine patients to the same level of long-term morbidity and mortality of typical tracheostomies.