Patient follow-up and data recording is conducted by associates who are unaware of CPR drug regimens. Daily follow-up to day 60 post-arrest includes physiological variables, medication and other treatment interventions, results of laboratory and diagnostic studies (including serum interleukins for days 1-10), and determination of the sequential organ dysfunction assessment (SOFA) score. For the first 10 days post-randomization, monitored/recorded physiological variables include hemodynamics (arterial and central venous pressure, and heart rate), gas exchange and respiratory mechanics, body temperature, urinary output and fluid balance. Patient neurological status will be assessed with the Glasgow Coma Score. Additional follow-up data will include hospital/intensive care unit (ICU)-related morbidity, length of ICU/hospital stay, and cerebral performance/residual disabilities (7) at hospital discharge.