Intracranial pressure homeostasis

Homeostasis of intracranial pressure (ICP) refers to the dynamic regulation of pressure inside the skull, maintained by compensatory changes in the volumes of three main intracranial components: brain tissue, cerebrospinal fluid (CSF), and blood[5][4][6]. Changes in any of these compartments are balanced according to the Monro-Kellie doctrine, which dictates that the sum volume within the cranium is fixed and that shifts in one must be offset by others[5][3][4]. ICP regulation is critically important for adequate cerebral perfusion; dysfunction leads to neurological injury, such as cerebral ischemia or herniation[4][6]. Although drugs and interventions can target the consequences or components affecting ICP, there is no single molecule or receptor representing "intracranial pressure homeostasis"[5][6][7].

Other names

Intracranial pressure regulationICP regulationICP homeostasis

Osmotic diuretics reduce cerebral edema by drawing fluid out of brain tissue Hypertonic solutions reduce ICP by increasing plasma osmolarity Acetazolamide reduces CSF production Barbiturates lower cerebral metabolism and blood flow