tetano
Editor, Senior Moderator
Clin Neurophysiol
. 2021 Feb 25;132(5):1009-1017.
doi: 10.1016/j.clinph.2021.02.007. Online ahead of print.
Neurophysiological findings and their prognostic value in critical COVID-19 patients: An observational study
Jean-Paul Niguet[SUP] 1 [/SUP], Romain Tortuyaux[SUP] 2 [/SUP], Bruno Garcia[SUP] 3 [/SUP], Merc? Jourdain[SUP] 4 [/SUP], Laurence Chaton[SUP] 1 [/SUP], S?bastien Pr?au[SUP] 5 [/SUP], Julien Poissy[SUP] 3 [/SUP], Raphael Favory[SUP] 5 [/SUP], Saad Nseir[SUP] 3 [/SUP], Daniel Mathieu[SUP] 3 [/SUP], Enagnon Kazali Alidjinou[SUP] 6 [/SUP], Arnaud Delval[SUP] 7 [/SUP], Philippe Derambure[SUP] 8 [/SUP], Lille Intensive Care and Neurophysiology COVID-19 study group
Affiliations
Abstract
Objective: To describe EEG patterns of critical Coronavirus Disease 2019 (COVID-19) patients with suspicion of encephalopathy and test their association with clinical outcome.
Methods: EEG after discontinuation of sedation in all patients, and somesthesic evoked potentials and brainstem auditive evoked potentials when EEG did not show reactivity, were performed. Clinical outcome was assessed at day 7 and 14 after neurophysiological explorations.
Results: 33 patients were included for analysis. We found slowed background activity in 85% of cases, unreactive activity in 42% of cases, low-voltage activity in 21% of cases and rhythmic or periodic delta waves in 61% of cases. EEG epileptic events were never recorded. Clinical outcome at day 14 was associated with unreactive background activity and tended to be associated with rhythmic or periodic delta waves and with low-voltage activity. Results of multimodal evoked potentials were in favor of a preservation of central nervous system somatosensory and auditory functions.
Conclusions: Among critical COVID-19 patients with abnormal arousal at discontinuation of sedation, EEG patterns consistent with encephalopathy are found and are predictive for short term clinical outcome.
Significance: The abnormal EEG with presence of periodic discharges and lack of reactivity could be related to encephalopathy linked to COVID-19.
Keywords: COVID-19; Electroencephalography; Encephalopathy; Evoked potentials; Neurophysiology.
. 2021 Feb 25;132(5):1009-1017.
doi: 10.1016/j.clinph.2021.02.007. Online ahead of print.
Neurophysiological findings and their prognostic value in critical COVID-19 patients: An observational study
Jean-Paul Niguet[SUP] 1 [/SUP], Romain Tortuyaux[SUP] 2 [/SUP], Bruno Garcia[SUP] 3 [/SUP], Merc? Jourdain[SUP] 4 [/SUP], Laurence Chaton[SUP] 1 [/SUP], S?bastien Pr?au[SUP] 5 [/SUP], Julien Poissy[SUP] 3 [/SUP], Raphael Favory[SUP] 5 [/SUP], Saad Nseir[SUP] 3 [/SUP], Daniel Mathieu[SUP] 3 [/SUP], Enagnon Kazali Alidjinou[SUP] 6 [/SUP], Arnaud Delval[SUP] 7 [/SUP], Philippe Derambure[SUP] 8 [/SUP], Lille Intensive Care and Neurophysiology COVID-19 study group
Affiliations
- PMID: 33743295
- DOI: 10.1016/j.clinph.2021.02.007
Abstract
Objective: To describe EEG patterns of critical Coronavirus Disease 2019 (COVID-19) patients with suspicion of encephalopathy and test their association with clinical outcome.
Methods: EEG after discontinuation of sedation in all patients, and somesthesic evoked potentials and brainstem auditive evoked potentials when EEG did not show reactivity, were performed. Clinical outcome was assessed at day 7 and 14 after neurophysiological explorations.
Results: 33 patients were included for analysis. We found slowed background activity in 85% of cases, unreactive activity in 42% of cases, low-voltage activity in 21% of cases and rhythmic or periodic delta waves in 61% of cases. EEG epileptic events were never recorded. Clinical outcome at day 14 was associated with unreactive background activity and tended to be associated with rhythmic or periodic delta waves and with low-voltage activity. Results of multimodal evoked potentials were in favor of a preservation of central nervous system somatosensory and auditory functions.
Conclusions: Among critical COVID-19 patients with abnormal arousal at discontinuation of sedation, EEG patterns consistent with encephalopathy are found and are predictive for short term clinical outcome.
Significance: The abnormal EEG with presence of periodic discharges and lack of reactivity could be related to encephalopathy linked to COVID-19.
Keywords: COVID-19; Electroencephalography; Encephalopathy; Evoked potentials; Neurophysiology.