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  • Title: Real-time TCD-vEEG monitoring for neurovascular coupling in epilepsy.
    Author: Yao Y, Lu Q, Jin LR, Zhou XQ, Huang Y, Xu WH.
    Journal: Seizure; 2015 Jul; 29():1-3. PubMed ID: 26076836.
    Abstract:
    PURPOSE: Recently, a novel multi-model monitor has been available, which integrates real-time signals of transcranial Doppler (TCD) and video-EEG (vEEG) into one workstation. We sought to test the feasibility of this device in detecting neurovascular coupling in patients with epilepsy. METHOD: Cerebral blood flow velocity (CBFV) of bilateral middle cerebral arteries and vEEG during seizure episodes were recorded simultaneously in 12 patients (age 17-58 years) with partial epilepsies. The correlations between vEEG and CBFV findings were analyzed. RESULTS: Eleven seizure episodes were detected in 5 patients. Of them, bilateral CBFV increase with interhemispheric asymmetry was observed in 4 seizure episodes of 3 patients. EEG abnormalities preceded CBFV increase by 1-3s at the onset of a seizure. In a patient with bilateral middle cerebral artery stenosis, no apparent CBFV changes were detected during 2 of 3 seizure episodes. Another patient with previous frontal hemorrhage displayed CBFV increase without interhemispheric asymmetry during 4 seizure episodes. CONCLUSION: It is feasible to evaluate neurovascular coupling with good temporal correlation in patients with frequent seizure episodes by real-time TCD-vEEG monitoring.
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