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Abstract Details

EEG Reactivity and Evoked Response Testing Predict Positive Outcomes Following Cardiac Arrest
Epilepsy/Clinical Neurophysiology (EEG)
Epilepsy/Clinical Neurophysiology (EEG) Posters (7:00 AM-5:00 PM)
031
To provide insight on further testing modalities in order monitor favorable outcomes in patients following a cardiac arrest (CA). EEG reactivity (EEG-R) and Somatosensory evoked response studies (SER) are beneficial in predicting favorable outcomes in patients status post cardiac arrest (CA).

EEG-R has been linked to positive outcomes for patients who have undergone CA. However, our group expands on this by positing that SER testing may additionally be utilized in standard of care and may be more efficacious when predicting patient outcomes. After a complete neurological examination, we performed EEG-R and SER testing on patients after cardiac arrest and monitored their clinical examination.
This is a retrospective cohort study. Patients who underwent cardiac arrest received EEG-R and SER studies during their workup. Data was analyzed by experienced neurophysiologists. Good outcome was defined by the modified Rankin Scale (mRS).
225 patients were analyzed from 2014-2020 with metabolic anoxic etiology. Thirty-five patients showed EEG-R to somatic stimulation. SER in these patients showed preserved cortical responses. At 3 months, MRS was greater than 3 in 2 patients, equal to 3 in 15 patients, 2 in 12 patients, and 1 in 6 patients. Reactivity was checked 24 hours after sedation. In 9 patients, the reactivity that was present went away and those patients did not recover.

The results of cortical SER in these patients express their favorable outcomes.  SER could early differentiate between good or poor outcomes and reliably predict poor outcomes compared to relying solely on EEG-R. 
Authors/Disclosures
Bryan D. Clements II, DO (UT Austin Dell Medical School Neurology Department)
PRESENTER 		Dr. Clements has nothing to disclose.
Stephanie C. Murti, DO (Georgetown) Ms. Murti has nothing to disclose.
Iftekhar Ahmed, MD, PC, FÂ鶹´«Ã½Ó³»­ (HCA) Dr. Ahmed has nothing to disclose.
No disclosure on file
No disclosure on file