| ACEP | American College of Emergency Physicians |
| ACLS | advanced cardiac life support |
| AED | automated external defibrillator |
| AMI | acute myocardial infarction |
| ARREST | Amsterdam Resuscitation Study of North Holland |
| BLS | basic life support |
| CAD | coronary artery disease |
| CARES | Cardiac Arrest Registry to Enhance Survival |
| CCU | critical care unit |
| CDC | Centers for Disease Control and Prevention |
| CMS | Centers for Medicare & Medicaid Services |
| CNS | central nervous system |
| COCPR | compression-only cardiopulmonary resuscitation |
| CPC | Cerebral Performance Category |
| CPR | cardiopulmonary resuscitation |
| CQI | continuous quality improvement |
| CT | computed tomography |
| CTSA | Clinical and Translational Science Awards |
| DHS | U.S. Department of Homeland Security |
| DNAR | do-not-attempt-resuscitation status |
| DOT | U.S. Department of Transportation |
| DRG | diagnosis-related group |
| ECC | emergency cardiac care |
| ECMO | extracorporeal membrane oxygenation |
| ECPR | extracorporeal cardiopulmonary resuscitation |
| ED | emergency department |
| EGDT | early goal-directed therapy |
| EKG | electrocardiogram |
| EMDPRS | emergency medical dispatch protocol reference system |
| EMS | emergency medical services |
| EMT | emergency medical technician |
| ERC | European Resuscitation Council |
| EuPSF | European Patient Safety Foundation |
| EuReCa | European Registry of Cardiac Arrest |
| FAA | Federal Aviation Administration |
| FDA | U.S. Food and Drug Administration |
| FICEMS | Federal Interagency Committee on EMS |
| FRP | first responder program |
| FRR | first recorded cardiac rhythm |
| GCS | Glasgow Coma Scale |
| GWTG-R | Get With The Guidelines-Resuscitation |
| IAEMSC | International Association of EMS Chiefs |
| ICD | International Classification of Diseases |
| ICU | intensive care unit |
| IHCA | in-hospital cardiac arrest |
| ILCOR | International Liaison Committee on Resuscitation |
| IOM | Institute of Medicine |
| MAUDE | Manufacturer and User Device Experience |
| MET | medical emergency team |
| mRS | Modified Rankin Scale |
| NAEMSP | National Association of EMS Physicians |
| NAS | National Academy of Sciences |
| NASEMSO | National Association of State EMS Officials |
| NATA | National Athletic Trainers’ Association |
| NCAC | National Cardiac Arrest Collaborative |
| NEMSAC | National EMS Advisory Council |
| NEMSIS | National Emergency Medical Systems Information System |
| NG911 | Next Generation 911 |
| NHLBI | National Heart, Lung, and Blood Institute |
| NHTSA | National Highway Transportation Safety Administration |
| NICHHD | National Institute of Child Health and Human Development |
| NIH | National Institutes of Health |
| NINDS | National Institute of Neurological Disorders and Stroke |
| NRC | National Research Council |
| NRCPR | National Registry for CPR |
| OHCAR | National Out-of-Hospital Cardiac Arrest Register Project |
| OHCA | out-of-hospital cardiac arrest |
| OPALS | Ontario Prehospital Advanced Life Support Study |
| OR | odds ratio |
| OSHA | Occupational Safety and Health Administration |
| PAD | public access defibrillation |
| PALS | pediatric advanced life support |
| PAROS | Pan-Asian Resuscitation Outcomes Study |
| PATH | Penn Alliance for Therapeutic Hypothermia |
| PCI | percutaneous coronary intervention |
| PCNASR | Paul Coverdell National Acute Stroke Registry |
| PCORI | Patient-Centered Outcomes Research Institute |
| PEA | pulseless electrical activity |
| PEWS | Pediatric Early Warning Score |
| PMA | premarket approval |
| PSAP | public safety answering point |
| PSHSB | Public Safety & Homeland Security Bureau |
| pVT | pulseless ventricular tachycardia |
| QALY | quality-adjusted life-year |
| ROC | Resuscitation Outcomes Consortium |
| ROSC | return of spontaneous circulation |
| RRT | rapid response team |
| SCAR | Swedish Cardiac Arrest Register |
| SES | socioeconomic status |
| SHARE | Save Hearts in Arizona Registry and Education |
| SIREN | Strategies to Innovate EmeRgeNcy Care Clinical Coordinating Center |
| STEMI | ST segment elevation myocardial infarction |
| T-CPR | telecommunicator-assisted cardiopulmonary resuscitation |
| THAPCA | Therapeutic Hypothermia After Pediatric Cardiac Arrest |
| TOR | termination of resuscitation |
| TTM | targeted temperature management |
| VA | U.S. Department of Veterans Affairs |
| VACAR | Victorian Ambulance Cardiac Arrest Registry |
| VF | ventricular fibrillation |
| VoIP | Voice over Internet Protocol |
| VT | ventricular tachycardia |
| WFSA | World Federation of Societies of Anaesthesiologists |