This project evaluated whether practice change occurred amongst Paramedics directly after the publication of the PARAMEDIC2 trial, regarding adrenaline administration during out-of-hospital cardiac arrest (OHCA) without a change in guidelines. When Paramedics are exposed to a seminal publication there is anecdotal concern their autonomous practice changes, based on comprehension of findings ahead of potential guideline changes, however little evidence appraises whether this really occurs. https://emj.bmj.com/content/37/10/e4.3 This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. http://creativecommons.org/licenses/by-nc/4.0/ DOI http://dx.doi.org/10.1136/emermed-2020-999abs.7