Respiratory failure & ventilation

Trends in characteristics, interventions, and outcomes of hospitalized patients with COVID-19 in Canada: a multicentre prospective cohort study

Can J AnaesthPublished Prospective cohort study

Authors' conclusion

Among patients hospitalized in Canada with COVID-19, several clinical factors including prior vaccination were associated with lower mortality, but pandemic wave was not.

Study context

Population
Adults and children admitted with COVID-19 to 47 Canadian hospitals, 2 January 2020 to 8 February 2022
Participants
5,285 adults · 47 hospitals
Exposure
Five pandemic waves
Outcome
Hospital mortality
Methodological detailsmulticentre
  • Multicentre

Main finding

As reported in the abstract

Observational data: associations, not effects.

Further findings

Intensive care unit (ICU) admission

Required admission to ICU
48% (n = 2,539)

Invasive mechanical ventilation among ICU patients

Underwent invasive mechanical ventilation
60.3% (n = 1,530)

Corticosteroid treatment

Treated with corticosteroids (most common treatment)
48.7%; n = 2,575
Use of corticosteroids and other evidence-based treatments increased over time

Hospital mortality, ICU and invasive mechanical ventilation subgroups (subgroup)

Hospital mortality among those admitted to ICU
30.2% (n = 766)
Hospital mortality among those requiring invasive mechanical ventilation
37.9% (n = 580)

Vaccination and ICU progression over waves

Proportion of vaccinated patients increased over time
Proportion of vaccinated hospitalized patients progressing to ICU fell over waves; unvaccinated did not

Original publication

Trends in characteristics, interventions, and outcomes of hospitalized patients with COVID-19 in Canada: a multicentre prospective cohort study. Can J Anaesth. Published 4 September 2024. doi:10.1007/s12630-024-02826-x

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