Abstract:
Transcranial Doppler ultrasonography was used to examine 65 young patients with symptomatic posttraumatic partial
epilepsy. Cerebral arterial blood flow velocity and reactivity to functional stress were assessed. Hyporeactivity to vasoconstrictor
stress was observed in all clinical groups. Depletion of vasodilator responses was observed in patients with subcompensation and
decompensation of the disease. Patients with frequent epileptic seizures showed a significant decrease in reactivity to orthostatic
stress. Mild hyperreactivity to the antiorthostatic test was detected in the group of patients with clinical compensation. The
hyporeactivity to functional stress in patients with epilepsy is due to the possible parasympathetic influence of the suprasegmental
autonomic nervous system.
