ASSESSment of Perfusion, Oxygen Saturation, Endothelial Function and Coagulation in Circulatory SHOCK

Cerebral and peripheral NIRS monitoring of brain and tissue oxygenation. Of the 400 patients, a subpopulation of the first 250 adult critically ill patients (≥18 years) requiring ICU care, including both surgical and medical ICU patients with circulatory shock will be included in the NIRS-substudy. All 400 patients will be analyzed for endotheliopathy incidence, metabolomics, genetic data Representation of the study population will be ensured by enrolment of all consecutive patients at the study sites who meet the study enrollment criteria