• Astrid B Glimmerveen, Hanneke M Keijzer, Barry J Ruijter, Marleen C Tjepkema-Cloostermans, van PuttenMichel J A MMJAMClinical Neurophysiology, Technical Medical Centre, University of Twente, Enschede, Netherlands.Department of Neurology and Clinical Neurophysiology, Medisch Spectrum Twente, Enschede, Netherlands., and Jeannette Hofmeijer.
• Department of Neurology, Rijnstate Hospital, Arnhem, Netherlands.
• Front Neurol. 2020 Jan 1; 11: 335.

AbstractObjective: We present relations of SSEP amplitude with neurological outcome and of SSEP amplitude with EEG amplitude in comatose patients after cardiac arrest. Methods: This is a post hoc analysis of a prospective cohort study in comatose patients after cardiac arrest. Amplitude of SSEP recordings obtained within 48-72 h, and EEG patterns obtained at 12 and 24h after cardiac arrest were related to good (CPC 1-2) or poor (CPC 3-5) outcome at 6 months. In 39% of the study population multiple SSEP measurements were performed. Additionally, SSEP amplitude was related to mean EEG amplitude. Results: We included 138 patients (77% poor outcome). Absent SSEP responses, a N20 amplitude <0.4 μV within 48-72 h, and suppressed or synchronous EEG with suppressed background at 12 or 24 h after cardiac arrest were invariably associated with a poor outcome. Combined, these tests reached a sensitivity for prediction of poor outcome up to 58 at 100% specificity. N20 amplitude increased with a mean of 0.55 μV per day in patients with a poor outcome, and remained stable with a good outcome. There was no statistically significant correlation between SSEP and EEG amplitudes in 182 combined SSEP and EEG measurements (R 2 < 0.01). Conclusions: N20 amplitude <0.4 μV is invariably associated with poor outcome. There is no correlation between SSEP and EEG amplitude. Significance: SSEP amplitude analysis may contribute to outcome prediction after cardiac arrest.Copyright © 2020 Glimmerveen, Keijzer, Ruijter, Tjepkema-Cloostermans, van Putten and Hofmeijer.

5 keywords...

hide…