Phenomenological study exploring ethics in prehospital research from the paramedic's perspective: experiences from the Paramedic-2 trial in a UK ambulance service.

A paucity of evidence exists to support any beneficial role of epinephrine in OHCA. Despite this, some paramedics were reluctant to participate in Paramedic-2 and relied on their personal perceptions and experiences of epinephrine to guide their decision regarding participation. Failure to acknowledge the importance of individual perspectives may jeopardise the success of future out-of-hospital trials.