Goal-directed CPR Using Cerebral Oximetry

Inclusion Criteria: 1. In-hospital cardiac arrest patient 2. Age ≥18 years 3. Age \<80 years 4. CPR lasting ≥5 minutes Exclusion Criteria: 1. Patients \< 18 years of age or \> 80 years of age 2. Out of hospital cardiac arrest patients 3. ≥3 acute organ failures (defined as acute renal failure requiring dialysis, fulminant liver failure i.e. liver failure with INR≥1.5, respiratory failure requiring mechanical ventilation) 4. Repeat in-hospital cardiac arrest event within 14 days of a prior cardiac arrest 5. Presence of known raised intracranial pressure 6. Presence of known traumatic brain injury or subarachnoid hemorrhage \<14 days old, frontal lobe brain tumors or subdural hemorrhage 7. Hyperbilirubinemia \>1.0 mg/dl (based on the absorption of near-infrared light by bilirubin) 8. Resuscitation using extra-corporeal membrane oxygenation (ECMO)