[Tissue oxygenation during recovery from anesthesia. Value and measurement].

The measurement of tissue oxygen concentrations in the intensive care unit is important for the management of patients, especially those in shock. In daily practice, right heart catheterization with continuous monitoring of the oxygen saturation of mixed venous blood provided means of evaluating the principal parameters of oxygenation (transport, consumption and extraction), and of analyzing therapeutic interventions. The finding of an oxygen debt implies an appropriate therapeutic response designed to balance oxygen supplies with peripheral oxygen demand.