“…The evidence that supported this change is dated and of low quality, but the weight of evidence at the time argued against any benefit in such cases. [103][104][105] Since the publication of the 2010 AHA guidelines, a study from the Survey of Survivors of Cardiac Arrest in the Kanto Area (SOS-KANTO) Study Group was published that compared the efficacy of epinephrine and epinephrine plus atropine for patients presenting with pulseless electric activity or asystole. There was no benefit from atropine plus epinephrine compared with epinephrine alone for patients presenting with pulseless electric activity as measured by rate of ROSC, survival to hospital admission, 30-day survival, or 30-day favorable neurological outcome.…”