TABLE 1.

Inclusion and Exclusion Criteria

Inclusion Criteria
Adult (≥ 18 yr old) patients
Patients with a cardiac arrest (a lack of palpable pulse or perfusing cardiac activity) while admitted to the hospital
Patients admitted to a ward (telemetry or nontelemetry) or an ICU or who are admitted but still in the ED waiting for a hospital bed
Patients who achieved ROSC (defined as > 20 min of sustained spontaneous circulation) OR were placed on extracorporeal CPR with chest compressions ongoing
Patients survived for 6 hr after ROSC
Exclusion Criteria
Cardiac arrest in non-inpatients (e.g., outpatients, visitors)
Patients whose CPR starts outside of the hospital
Nonindex arrests (arrests that are not the patient’s first arrest during the hospital admission; this also excludes patients who were initially admitted for an out-of-hospital cardiac arrest)
Patients suffering in-hospital cardiac arrest in the operating room or post-anesthesia care unit
Patients with cardiac arrest after arriving to an ED but before being evaluated and admitted to the hospital
Cardiac arrests lasting < 2 min (i.e., chest compressions performed < 2 min)
Cardiac arrests where the patient is transitioned to comfort focused care within 6 hr of ROSC

CPR = cardiopulmonary resuscitation, ED = emergency department, ROSC = return of spontaneous circulation.