A Study Of EEG Burst-suppression Patterns After Cardiopulmonary Arrest
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概要
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Purpose: To determine the significance of burst-suppression (BS) patterns on electroencephalograms (EEGs) and the early prediction of individual outcome after cardiopulmonary arrest. Methods: We retrospectively studied 80 cases resuscitation after cardiopulmonary arrest (full recovery in 2 cases, vegetative state in 37 cases, death in 41 cases). The EEG and auditory brainstem response (ABR) were recorded, and the frequency of BS and conventional changes in BS and the correlations between BS and outcome, clinical manifestations, and ABR were analyzed. Results: 1. Twelve patients (15.0%) showed BS on the EEG, and all of them had a fatal or vegetative outcome. 2. Almost all BS patterns led to an isoelectric pattern, if unless present for more than three days. Myoclonic jerks occurred during the burst phase in six cases (50.0%). 3. No correlation was found between the burst and suppression phases and patients' outcome. 4. BS patterns appeared in the I-V waves of 11 patients (91.7%) whose ABR was recorded, and the ABR latency was delayed in eight patients (66.7%). 5. The light reflex was present in seven cases (58.3%) and absent in five cases (41.7%) with a BS pattern. Conclusion: EEGs performed within 24 hours after cardiopulmonary arrest provided significant prognostic data. The clinical significance of BS is unclear and remains to be established, but when BS patterns were not present for more than three days, then led to be an isoelectric pattern.
- 一般社団法人 日本救急医学会の論文
一般社団法人 日本救急医学会 | 論文
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