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Complex partial seizure provocation by vasovagal syncope: video-EEG and intracranial electrode documentation
G K Bergey1, A Krumholz, C P Fleming
1Department of Neurology, University of Maryland School of Medicine and Medical Center, Baltimore 21201, USA.
Epilepsia
|January 1, 1997
Summary
Vasovagal syncope can rarely trigger epileptic seizures. This study documents the first reported case of a partial epileptic seizure induced by vasovagal syncope in an adult patient.
Area of Science:
- Neurology
- Epileptology
- Cardiology
Background:
- Vasovagal syncope is a common cause of transient loss of consciousness.
- Epileptic seizures are characterized by abnormal, excessive neuronal discharges.
- The co-occurrence of vasovagal syncope and epileptic seizures is infrequently reported.
Observation:
- A patient with intractable complex partial seizures was undergoing evaluation for epilepsy surgery.
- The patient experienced a vasovagal episode, which was followed by a complex partial seizure.
- The seizure exhibited mesial temporal onset, consistent with the patient's known epilepsy.
Findings:
- This case represents the first documented instance of a partial epileptic seizure precipitated by vasovagal syncope.
- It is also the first reported case of syncope-induced epileptic seizure in an adult.
- The event was corroborated by video and intracranial electrophysiological recordings.
Implications:
- This finding expands the understanding of potential seizure triggers.
- It highlights the importance of considering vasovagal episodes in the differential diagnosis of seizure-like events.
- Further research may elucidate the neurophysiological mechanisms linking syncope and epilepsy.