[stuckindoors]

This need some clarification.Not all CRP should be put in one bucket.

Out of hospital/unwitnessed arrests - mortality is bad.

In hospital/witnessed arrests - CRP mortality was better.

Downtime (ie time without perfusion makes a difference) the longer it is - the worse the outcome. The difference between long and short is minutes.

That doesn't mean CRP isn't worth trying. The hard part is making sure families understand when futility begins. Some families never get there.