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The analysis of the intracranial pressure by the concept of the driving pressure from the vascular system.

In order to understand the pathogenesis of intracranial hypertension, the intracranial pressure (ICP) has usually been studied with the concept of volumetric pressure. In other words, the ICP is held to derive from the volume of the intracranial elements (e.g., brain, blood and cerebrospinal fluid). In this paper, the authors propose a new concept of the so-called driving pressure and apply it to both clinical and experimental studies. The driving pressure (DP) consists of the combined pressure continuously exerted on the ICP by the arterial pressure (ADP) and venous pressure (VP) systems.