OHCA transported to ER, CPR at home for 50 min +, and eventually spontaneous heart beat was restored 

Family members found and alerted in time + 2 times of defibrillation +8 epinephrine + a EMS group of 4 people with continuous chest compression + on-site timely tracheal intubation + early opening of the green channel. Finally, the patient successfully recovered spontaneous heartbeat and electrocardiogram showed inferior myocardial infarction