Differences in intracranial pressure seen in children and adults could be caused by age differences

In neurosurgery, one aim of treatment is normalization of intracranial pressure (ICP). Although a range from 7 to 15 mmHg is widely accepted in neurosurgical clinical practice, true reference values are uncertain. No studies compare ICP measurements in children to measurements in adults, and it seems silently assumed that reference values are the same. The same reference range is therefore, regardless of the physiological differences, used for both children and adults.This study has two aims:• To clarify if day and night ICP differs between children and adults.• To examine if age affects ICP.