[Changes in regional intracranial blood volume intracranial pressure in infants during continuous simultaneous recording--a clinical study].

In five infants with severe neurologic-neurosurgical affections, correlations between the intracranial blood volume (rICBV) and the intracranial pressure (ICP) could be proved. For the ICP range from 0 to 250 mm H2O, an increase in the pulse amplitude of the rICBV was found with increasing ICP. On the other hand, there were distinct rICBV decreases with increasing ICP in the ICP range from 300 to 450 mm H2O. Subsequent, often only slight ICP decreases in this range resulted in a reactive hyperaemisation. More pronounced hyperaemisations could be associated with moderate ICP increases of the same duration. The results are discussed on the basis of a model.