High flow oxygen and risk of mortality in patients with a suspected acute coronary syndrome: pragmatic, cluster randomised, crossover trial

Trial (n=40,872) found high flow oxygen (6-8 L/min by face mask for ischaemic symptoms or electrocardiographic changes) was not associated with an increase or decrease in 30 day mortality vs a low oxygen protocol (oxygen only if SpO2 was less than 90%).

Source:

British Medical Journal