Dr. Keith Wesley, an emergency medicine physician who has authored several EMS textbooks and articles, viewed the 4chan post at BuzzFeed News’ request and said it lays out standard procedures for paramedics.

“This sounds like standard American Heart Association guidelines, which most EMS agencies use,” Wesley said.

Part of the post refers to “telemetry advised bicarb.” According to Wesley, this could mean the first responders were also speaking with the hospital as they were trying to resuscitate their patient.

It struck me that one of the guards who was "not a regular correctional officer" could be the leaker, but "telemetry advised bicarb" sounds pretty medical.