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J Clin Neurophysiol · Apr 2003
Case ReportsA case of area-specific stimulus-sensitive postanoxic myoclonus.
- Sasa A Zivkovic and Richard P Brenner.
- Department of Neurology, University of Pittsburgh School of Medicine, Pennsylvania, USA. zivkovics@msx.upmc.edu
- J Clin Neurophysiol. 2003 Apr 1; 20 (2): 111-6.
AbstractThe authors report a case of area-specific stimulus-sensitive postanoxic myoclonus and discuss possible pathophysiology. A 71-year-old man sustained cardiorespiratory arrest that lasted 10 minutes and remained unresponsive. On the first EEG obtained 8 hours after the arrest there was no cerebral electrical activity before stimulation of the trigeminal-innervated areas. Periorbital stimulation was associated with bursts of spike-wave activity and generalized myoclonic jerks, whereas other types of stimulation did not elicit any response. A second EEG obtained 32 hours later showed a nonreactive alpha coma pattern. The patient died 7 days after the arrest. Area-specific stimulus-sensitive postanoxic myoclonus is very rare. The regularity of generalized bursts of spike-wave activity (cortical response) in response to stimulation of trigeminal-innervated areas suggests that the resting EEG electrocerebral silence may have been a result of cortical suppression with disinhibition of stimulus-sensitive brainstem-generated myoclonus.
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