b'2024 DATASETTable 3. Cerebral Performance Category (CPC) ScoresCPC Score DescriptionCPC 1 Good Cerebral PerformanceConscious, alert, able to work and lead a normal life.Moderate Cerebral DisabilityCPC 2 Conscious and able to function independently (dress, travel, prepare food), but may have hemiplegia, seizures, or permanent memory or mental changes.Severe Cerebral DisabilityCPC 3 Conscious, dependent on others for daily support because of impaired brain function (in an institution or at home with exceptional family effort).Coma, Vegetative StateCPC 4 Not conscious. Unaware of surroundings, no cognition. No verbal or psychological interactions with environment.CPC 5 DeathARREST CHARACTERISTICS AND OUTCOMESSurvival outcomes differed markedly across etiology, presenting rhythm, and witness status categories.Patients with an arrest of presumed cardiac etiology had an unadjusted survival rate to hospital discharge of 9.6%. Survival rates were slightly higher among patients with an arrest caused by a respiratory mechanism or drowning (13.7 and 13.0%, respectively), whereas patients with an overdose-related arrest had a survival rate of 19.0%. Survival was lowest among patients with an arrest due to exsanguination or hemorrhage (2.6%) (Figure 17).Patients presenting with an initial shockable rhythm of ventricular fibrillation (VF) or ventricular tachycardia (VT) have a significantly higher chance of survival compared to those presenting with a non-shockable rhythm, such as asystole or pulseless electrical activity (PEA) (Figure 18). Patients who presented in a shockable rhythm had a survival to hospital admission rate of 48.1%, compared to 32.9% for those in PEA and 14.3% for those in asystole. Similarly, patients presenting in a shockable rhythm had a greater chance of being discharged alive (31.3%), compared to 11.1% of patients presenting in PEA and 2.6% of patients in asystole.Arrest witness status also has a significant impact on patient outcomes, as witnessed arrests have more opportunity for bystander intervention and early delivery of care. Patients with a 911 Responder witnessed arrest had the highest chance of survival to hospital discharge (18.1%), followed closely by those with a bystander witnessed arrest (16.1%). In contrast, unwitnessed events had a survival rate of 4.5% (Figure 19).Survival chances increase when someone witnesses the arrest and acts fast. Witnessed events lead to quicker CPR and AED usekey links in the Chain of Survival. CARES empowers communities to save lives. mycares.net42'