Assessment of Brain Damage Using Monitoring of Cerebral Oximetry Dynamics in Patients After Cardiac Arrest

At each patient two test are preformed. The first test is based on increasing blood flow through the brain through a controlled gradual infusion of norepinephrine (noradrenalin). The patient will receive such an infusion immediately upon admission and stabilization in the Department of Intensive Internal Medicine and then in the period of 6, 12, 24, 48 and 72 hours after admission. The second test is based on passive elevation of the lower extremities. The second test will also be performed on the patient immediately upon admission and stabilization in the Department of Intensive Internal Medicine and then in the period of 6, 12, 24, 48 and 72 hours after admission.