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Continuous EEG Spots Hidden Brain Injury in Critical Care

Last Updated: June 19, 2009.

Continuous electroencephalography may help to identify patients with otherwise undetectable seizures, according to a study published in the June issue of Critical Care Medicine, while a study published online April 13 in the Annals of Neurology found that intracortical EEG is better than scalp EEG for detection of secondary neuronal injury.

FRIDAY, June 19 (HealthDay News) -- Continuous electroencephalography (EEG) may help to identify patients with otherwise undetectable seizures, according to a study published in the June issue of Critical Care Medicine, while a study published online April 13 in the Annals of Neurology found that intracortical EEG is better than scalp EEG for detection of secondary neuronal injury.

Mauro Oddo, M.D., of Columbia University Medical Center in New York City, and colleagues conducted a study of 201 patients without known acute neurologic injury admitted to the medical intensive care unit where they underwent continuous EEG monitoring, and found that they frequently had otherwise undetectable electrographic seizures and periodic epileptiform discharges (mostly associated with sepsis), and that both types of events were associated with poor outcome.

Allen Waziri, M.D., and colleagues at the Columbia University College of Physicians and Surgeons in New York City conducted a study of 16 patients with brain injury who required invasive neuromonitoring, of whom 14 were monitored with both scalp and intracortical EEG and found that intracortical EEG detected ictal discharges that were not apparent with scalp EEG.

"We predict that intracortical EEG will facilitate the development of EEG-based alarm systems and lead to prevention of secondary neuronal injury," Waziri and colleagues conclude.

Abstract - Oddo
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Abstract - Waziri
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