When it is offered
When breathing is described as normal, when you ask for it, and on the most acute pathways.
SosTriage
Look when it changes the assessment
Video is a clinical aid. It is not a task you give a caller who is alone with someone who is not breathing.
When it is not offered
Not during resuscitation, and not in a way that sends the caller away from the patient to fetch equipment.
What you see
The picture comes to the desk. It is not a finding until you have seen it.