[Dynamics of the extracranial blood flow in patients after posterior fossa surgery in sitting position].

OBJECTIVE

To study the brachiocephalic blood flow in patients after posterior fossa surgery in sitting position.

MATERIAL AND

METHODS

We examined 60 patients (44 women and 16 men, mean age from 46.45±13.2 years) after the surgery of neurinomas and meningiomas. The study of neurological symptoms and cerebral blood flow as well as computed tomography of the brain were performed.

RESULTS AND

CONCLUSION

No changes in the extracranial blood flow were found in patients without pneumocephalus or with a small amount of air in the intracranial cavity. Pneumocephalus decreased the linear velocity of the blood flow in the postoperative period. A trend towards the restoration of the blood flow along the inner carotid artery on both sides up to the preoperative level was found in patients with common pneumocephalus 24-48h after the surgery.