Out of hospital cardiac arrest management has become increasingly complex and consequently so has the role of the online medical control physician. This session will briefly review the latest science on out of hospital cardiac arrest. I will use actual online medical control calls to help the audience learn the science and best practices for managing an out of hospital cardiac arrest from the EMS radio. The main points covered include 1) When to transport? Work patient on scene versus expedited transport. 2) When to terminate? Termination of resuscitation science including how to incorporate ETCO2 into the TOR rules. This session was recorded on Monday, April 24, 2023 at
the 29th Annual Scientific Assembly (AAEM23) in New Orleans, LA.