JOURNAL ARTICLE

Short-term outcome prediction by electroencephalographic features in children treated with therapeutic hypothermia after cardiac arrest

Sudha Kilaru Kessler, Alexis A Topjian, Ana M Gutierrez-Colina, Rebecca N Ichord, Maureen Donnelly, Vinay M Nadkarni, Robert A Berg, Dennis J Dlugos, Robert R Clancy, Nicholas S Abend
Neurocritical Care 2011, 14 (1): 37-43
20890677

BACKGROUND: Electroencephalographic (EEG) features may provide objective data regarding prognosis in children resuscitated from cardiac arrest (CA), but therapeutic hypothermia (TH) may impact its predictive value. We aimed to determine whether specific EEG features were predictive of short-term outcome in children treated with TH after CA, both during hypothermia and after return to normothermia.

METHODS: Thirty-five children managed with a standard clinical TH algorithm after CA were prospectively enrolled. EEG recordings were scored in a standardized manner and categorized. EEG category 1 consisted of continuous and reactive tracings. EEG category 2 consisted of continuous but unreactive tracings. EEG category 3 included those with any degree of discontinuity, burst suppression, or lack of cerebral activity. The primary outcome was unfavorable short-term outcome defined as Pediatric Cerebral Performance Category score of 4-6 (severe disability, vegetative, death) at hospital discharge. Univariate analyses of the association between EEG category and outcome was performed using logistic regression.

RESULTS: For tracings obtained during hypothermia, patients with EEGs in categories 2 or 3 were far more likely to have poor outcome than those in category 1 (OR 10.7, P = 0.023 and OR 35, P = 0.004, respectively). Similarly, for tracings obtained during normothermia, patients with EEGs in categories 2 or 3 were far more likely to have poor outcomes than those in category 1 (OR 27, P = 0.006 and OR 18, P = 0.02, respectively).

CONCLUSIONS: A simple EEG classification scheme has predictive value for short-term outcome in children undergoing TH after CA.

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