Validation of the suppression ratio from a simplified EEG montage during targeted temperature management after cardiac arrest
| Autor: | Alexa Craig, Teresa May, David B. Seder, Richard R. Riker, Louis Eubank |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Adult
medicine.medical_specialty medicine.medical_treatment 030204 cardiovascular system & hematology Emergency Nursing Core temperature Targeted temperature management Electroencephalography 03 medical and health sciences 0302 clinical medicine Hypothermia Induced Seizures Internal medicine Background analysis medicine Humans Monitoring Physiologic medicine.diagnostic_test Adult patients business.industry 030208 emergency & critical care medicine Standardized terminology Heart Arrest Burst suppression Emergency Medicine Cardiology Cardiology and Cardiovascular Medicine business |
| Zdroj: | Resuscitation. 153 |
| ISSN: | 1873-1570 |
| Popis: | The Suppression Ratio (SR) estimates the percent of the electroencephalography (EEG) epoch with very low voltage, and is associated with neurological outcome after cardiac arrest. We aimed to compare the SR generated by two monitoring devices and determine the association between SR and patterns on amplitude integrated EEG (aEEG) and full conventional EEG (cEEG).Consecutive adult patients treated with TTM after cardiac arrest were enrolled. We compared the SR from the Medtronic Vista monitor (MSR) to the SR generated from the full montage cEEG with Persyst Magic-Marker software (PSR). A blinded neurologist, board certified in epilepsy, scored the 4-channel aEEG pattern and the cEEG background using standardized terminology. Values for SR were compared to aEEG and cEEG categories using Kruskal-Wallis ANOVA, and to each other using Altman-Bland methodology.23 adults treated with TTM had a mean core temperature of 33.8 °C at the time of SR and EEG background analysis. The MSR was 0% during continuous cEEG background, 23% when cEEG was discontinuous, and 64% during cEEG burst suppression (p = 0.01). The MSR was 0% during aEEG continuous patterns, 34% during aEEG burst suppression, and 46% during flat aEEG (p 0.001). The MSR and PSR were highly correlated (0.88, p 0.0001), with minimal bias (0.3%) and excellent 95% limits of agreement (-2.9 to 2.4%).The Suppression Ratio from the Medtronic Vista monitor is highly correlated with the full montage SR from Persyst software. The MSR values are valid, changing with different aEEG patterns and cEEG background categories. |
| Databáze: | OpenAIRE |
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