Cardioversion and adenosine in a kid whose history you know very little about is not something to be taken lightly;
Your right; but with this thought we shouldn't treat a lot of the patients that we treat.
I have given Adenocard, and then cardioverted patients that I knew nothing about their medical history because they were unconscious. Their friend had given them 2 doses of Narcan (because he thought it was an OD) at least he tried. Fire is yelling at me to IV push more Narcan (patient was breathing ok, just not awake).
I got a line, and my partner put him on a monitor and HR was over 200. Pushed Adenocard and HR slowed down to about 80, good 12 lead, then sped back up to 210, 12 lead showed SVT. I tried 12mg and got same results. Cardioverted him twice before it broke enough that I could get a BP that was readable. Ground transported him 130 miles to a hospital that could handle him, because we couldn't get a helicopter.
I knew nothing about him, except his friend thought he OD'd Turned out he had no drug history or drugs in his blood. He also had no cardiac history, before that day.