Bradycardia from flash stimulation

This case study documents a patient who experienced bradycardia brought on by flash stimulation during a routine outpatient EEG recording. The patient had known photosensitive seizures in the past. During this routine EEG, the patient's heart rate dropped to about 12 beats per minute with the E...

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Bibliographic Details
Published in:Epileptic disorders 2015-12, Vol.17 (4), p.409-412
Main Authors: Einspenner, Michael, Brunet, Donald G., Boissé Lomax, Lysa, Spiller, Allison E.
Format: Article
Language:English
Subjects:
bradycardia
Bradycardia - etiology
Bradycardia - physiopathology
Brain - physiopathology
Cardiac arrhythmia
case study
Electroencephalography - adverse effects
flash stimulation
Heart Rate - physiology
Humans
Male
Medical equipment
Photic Stimulation - adverse effects
syncope
Syncope, Vasovagal - etiology
Syncope, Vasovagal - physiopathology
Young Adult
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Description
Summary:This case study documents a patient who experienced bradycardia brought on by flash stimulation during a routine outpatient EEG recording. The patient had known photosensitive seizures in the past. During this routine EEG, the patient's heart rate dropped to about 12 beats per minute with the EEG displaying slow‐delta‐frequency waves with no epileptiform spikes or sharp waves. During immediate follow‐up, in our emergency department, the patient had a brief asystolic event, followed by bradycardia. Cardiology examinations were normal. We propose that this response was a photic‐triggered reflex vasovagal reaction.
ISSN:1294-9361
1950-6945
DOI:10.1684/epd.2015.0775