[Cerebral circulation pathophisiology into pneumocephalus craniocerebral dispoportion].

We included 19 patients with a different intensity postoperative pneumocephalus and an inadequate postoperative awakening. Intracranial CT excluded postoperative complications (oedema, haematoma, hidrocephalus) and diagnosed a pneumocephalus (above the frontal and temporal lobes and in the cerebral ventricular system). In two hours after operation we found systolic linear blood flow velocity (BFV syst.) decrease in the extracranial part of internal carotic artery (ICA) (p < 0.001) in patients with pneumocephalus and inadequate postoperative awakening. But in 24-48 hours after operation we diagnosed BFV syst. elevation in the ICA extracranial part (p < 0.001) and preumocephalus diminution in patients with a recovered consciousness.