How effective is routine inhaled oxygen therapy for patients with acute myocardial infarction (AMI)?
The evidence in this area is sparse, of poor quality and predates advances in reperfusion techniques and trial methods. The evidence available suggests harm but lacks power, so these results could be due to chance.
Oxygen is widely recommended for patients with AMI yet a narrative review has suggested it may do more harm than good. Other systematic reviews have also concluded there is insufficient evidence to know whether oxygen reduced, increased or had no effect on the heart, ischaemia or infarct size.