· There was no source of Canadian data (published or grey, federal or provincial) to address this question and differentiate between types of ventilation.
· There are several studies available assessing the proportions seen in other countries and a lot of theoretical literature about using non-invasive ventilation (NIV) as a first-line intervention to hopefully avoid intubation and invasive mechanical ventilation (IMV), for which there is weak evidence.
· Key studies include an analysis of 36 ICU patients in Wuhan in which 41.7% received NIV and 47.2% received MIV. Another large-scale study of 1,099 hospitalized patients reported IMV in 6.1% with no report of NIV.
Badea, A; Groot, G; Dalidowicz, M; Miller, L. In similar jurisdictions experiencing the COVID-19 pandemic, what is the proportion of patients receiving non-invasive ventilation versus those receiving intermittent mandatory ventilation? 2020 May 22; Document no.: EOC052102 RR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2020. 8 p. (CEST rapid review report)