| VF | Ventricular Fibrillation |
| RVF | Refractory Ventricular Fibrillation |
| ERC | European Resuscitation Council |
| AHA | American Heart Association |
| RCT | Randomized Controlled Trial |
| DSED | Double Sequential External Defibrillation |
| VC | Vector Change |
| OHCA | Out-of-Hospital Cardiac Arrest |
| IHCA | In-Hospital Cardiac Arrest |
| CPR | Cardiopulmonary Resuscitation |
| ROSC | Return of Spontaneous Circulation |
| PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
| NOS | Newcastle–Ottawa Scale |
| RoB 2 | Cochrane Risk of Bias 2 Tool |
| EMS | Emergency Medical Services |
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