The state of the lumen of the major cerebral vessels and systems of regulation of cerebral circulation in patients with cerebral ischemia with the development of epileptic seizures

Abstract

Introduction. Cerebrovascular diseases are often associated with the development of epileptic seizures. It was suggested that in the implementation of epileptogenesis in patients with ischemic brain damage, a hemodynamic factor, namely the state of the perfusion reserve, may be important.Objective. The examination of the state of cerebrovascular reactivity of different cerebral vascular basins in patients with the development of epileptic seizures affected by cerebral ischemia.Materials and methods. 772 patients with acute and chronic cerebral ischemia (265 stroke patients with epileptic seizures and 174 patients with seizures on the background of chronic cerebral ischemia and 203 patients with stroke and 130 patients with chronic cerebral ischemia without seizures) was comprehensively examined.Results. In patients with cerebral ischemia, focal seizures prevail. Cortical localization of ischemic foci prevailed in patients with both acute and chronic cerebral ischemia. Stenosis of the main arteries were more often detected as in patients with ischemic stroke with the development of epileptic seizures – 218 (82.3%) compared with patients with stroke in the comparison group – 151 (74.4%) patients, р < 0.05), and in patients with CBI (chronic brain ischemia) with the development of epileptic seizures – 121 (69.5%) people, p < 0.05) compared with patients in the comparison group – 74 (56.9%) patients. The prevalence of stenosisof the main cerebral arteries was revealed in more than 70% in patients with pre-stroke epileptic seizures – 77 (33.5%) compared with patients without precursor seizures, who have been diagnosed with stenosis of more than 70% were found in only 4 (11.5%) patients (χ2 = 10.1; p = 0.03). In the comparison group of patients, there was no significant difference in CVR (cerebrovascular reactivity) changes in the carotid system and in the VBS (vertebrobasilar system) – 30 (36.6%) and 42 (47.7%) examined, respectively.Conclusion. The revealed decrease in cerebrovascular reactivity in the vertebrobasilar basin can be considered as one of the risk factors for the development of epilepsy in conditions of brain ischemia.