Discover In-Hospital Cardiac Arrest

Inclusion Criteria:

• Adult (≥18 years old) patients

• Patients with a cardiac arrest (a lack of palpable pulse or perfusing cardiacactivity) while admitted to the hospital

• Patients admitted to a ward (telemetry or non-telemetry) or an intensive care unit,or are admitted but still in the emergency department waiting for a hospital bed

• Patients who achieved return of spontaneous circulation (ROSC defined as >20 minutesof sustained spontaneous circulation) OR initiated on extracorporeal membraneoxygenation (eCPR) with chest compressions ongoing

• Patients survived for 6 hours after ROSC

Exclusion Criteria:

• Cardiac arrest in non-inpatients (e.g. outpatients, visitors)

• Patients whose cardiopulmonary resuscitation (CPR) starts outside of the hospital

• Non-index arrests (arrests that are not the patient's first arrest during thehospital admission; this also excludes patients who were initially admitted for anout-of-hospital cardiac arrest)

• Patients suffering IHCA in the operating room (OR) or post anesthesia care unit (PACU)

• Patients with cardiac arrest after arriving to an emergency department (ED) butprior to being evaluated and admitted to the hospital

• Cardiac arrests lasting <2 minutes (i.e. chest compressions performed <2 minutes)

• Cardiac arrests where the patient is transitioned to comfort focused care within 6hours of return of spontaneous circulation (ROSC)