Editing Automated external defibrillator (section)

===Benefit===
Observational studies have shown that in out of hospital cardiac arrest, public access defibrillators when used were associated with 40% median survival. When operated by non-dispatched lay first responders they have the highest likelihood of leading to survival.<ref>{{cite journal|title=The Effects of Public Access Defibrillation on Survival After Out-of-Hospital Cardiac Arrest: A Systematic Review of Observational Studies|last1=Bækgaard|first1=Josefine S.|last2=Viereck|first2=Søren|last3=Møller|first3=Thea Palsgaard|last4=Ersbøl|journal=Circulation |year=2017 |volume=136 |issue=10 |pages=954–965 |doi=10.1161/CIRCULATIONAHA.117.029067 |pmid=28687709|s2cid=21249432 |doi-access=free}}</ref>