When will you give oxygen in acute STEMI patient?

When will you give oxygen in acute STEMI patient?

A. At presentation despite his current O2 saturation.
B. O2 sat. level between 90 and 95%.
C. O2 sat. level below 90%.
D. O2 sat. level below 80%.
E. Whenever the patient asks for oxygen.

#Emergency_Medicine

Ans B