[Rheoencephalographic evaluation of cerebrovascular circulation in cases of ruptured intracranial aneurysms and after carotid artery ligation].

Rheoencephalographic (REG) investigations were performed in patients with ruptured intracranial aneurysms before and after common carotid artery ligation and in a group of healthy subjects. REG curves after ligation of the common carotid artery showed lowering of the amplitude of waves on the side of ligation and generalized vasospasm of varying intensity and different degree of penetration into the cerebral structures. These changes were more intensive on the side of ligation and persisted for over 2 weeks. REG is a valuable method for early diagnosis of vascular disturbances in acute postoperative period in these operations.