According to the ability of the patient to the research the predefined point of time number 1 will be supposed (point of time number 1: inclusion criterium). The predefined point of time number 2 will be supposed if the therapy concept is planned or changed. The point of time number 3 is defined as the re-evaluation in the course of changed therapy conceptions. If the medical practitioner team decides to renounce the PiCCO-system, the predefined point of time number 4 has arrived.