MRI–EEG correlation for outcome prediction in postanoxic myoclonus : A multicenter study

Details

Serval ID
serval:BIB_C91EE1A002F8
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
MRI–EEG correlation for outcome prediction in postanoxic myoclonus : A multicenter study
Journal
Neurology
Author(s)
Beuchat Isabelle, Sivaraju Adithya, Amorim Edilberto, Gilmore Emily J., Dunet Vincent, Rossetti Andrea O., Westover M. Brandon, Hsu Liangge, Scirica Benjamin M., Silva Danuzia, Tang Kathleen, Lee Jong Woo
ISSN
0028-3878
1526-632X
ISSN-L
0028-3878
Publication state
Published
Issued date
28/07/2020
Peer-reviewed
Oui
Volume
95
Number
4
Pages
e335-e341
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
To examine the prognostic ability of the combination of EEG and MRI in identifying patients with good outcome in postanoxic myoclonus (PAM) after cardiac arrest (CA).
Adults with PAM who had an MRI within 20 days after CA were identified in 4 prospective CA registries. The primary outcome measure was coma recovery to command following by hospital discharge. Clinical examination included brainstem reflexes and motor activity. EEG was assessed for best background continuity, reactivity, presence of epileptiform activity, and burst suppression with identical bursts (BSIB). MRI was examined for presence of diffusion restriction or fluid-attenuated inversion recovery changes consistent with anoxic brain injury. A prediction model was developed using optimal combination of variables.
Among 78 patients, 11 (14.1%) recovered at discharge and 6 (7.7%) had good outcome (Cerebral Performance Category < 3) at 3 months. Patients who followed commands were more likely to have pupillary and corneal reflexes, flexion or better motor response, EEG continuity and reactivity, no BSIB, and no anoxic injury on MRI. The combined EEG/MRI variable of continuous background and no anoxic changes on MRI was associated with coma recovery at hospital discharge with sensitivity 91% (95% confidence interval [CI], 0.59-1.00), specificity 99% (95% CI, 0.92-1.00), positive predictive value 91% (95% CI, 0.59-1.00), and negative predictive value 99% (95% CI, 0.92-1.00).
EEG and MRI are complementary and identify both good and poor outcome in patients with PAM with high accuracy. An MRI should be considered in patients with myoclonus showing continuous or reactive EEGs.
Keywords
Clinical Neurology
Pubmed
Web of science
Create date
10/06/2020 21:26
Last modification date
18/11/2020 7:24
Usage data