Improved early postresuscitation EEG activity for animals treated with hypothermia predicted 96 hr neurological outcome and survival in a rat model of cardiac arrest

8Citations
Citations of this article
17Readers
Mendeley users who have this article in their library.

Abstract

<p> <italic>Purpose.</italic> To investigate the effect of hypothermia on 96 hr neurological outcome and survival by quantitatively characterizing early postresuscitation EEG in a rat model of cardiac arrest. <italic>Materials and Methods.</italic> In twenty male Sprague-Dawley rats, cardiac arrest was induced through high frequency transesophageal cardiac pacing. Cardiopulmonary resuscitation was initiated after 5 mins untreated arrest. Immediately after resuscitation, animals were randomized to either 2 hrs of hypothermia ( <math id="M1"> <mi>N</mi> <mo>=</mo> <mn>10</mn> </math> ) or normothermia ( <math id="M2"> <mi>N</mi> <mo>=</mo> <mn>10</mn> </math> ). EEG, ECG, aortic pressure, and core temperature were continuously recorded for 6 hrs. Neurological outcome was evaluated daily during the 96 hrs postresuscitation period. <italic>Results.</italic> No differences in the baseline measurements and resuscitation outcome were observed between groups. However, 96 hr neurological deficit score (204 ± 255 versus 500 ± 0, <math id="M3"> <mi>P</mi> <mo>=</mo> <mn>0.005</mn> </math> ) and survival (6/10 versus 0/10, <math id="M4"> <mi>P</mi> <mo>=</mo> <mn>0.011</mn> </math> ) were significantly better in the hypothermic group. Quantitative analysis of early postresuscitation EEG revealed that burst frequency and spectrum entropy were greatly improved in the hypothermic group and correlated with 96 hr neurological outcome and survival. <italic>Conclusion.</italic> The improved burst frequency during burst suppression period and preserved spectrum entropy after restoration of continuous background EEG activity for animals treated with hypothermia predicted favorable neurological outcome and survival in this rat model of cardiac arrest. </p>

Cite

CITATION STYLE

APA

Chen, B., Song, F. Q., Sun, L. L., Lei, L. Y., Gan, W. N., Chen, M. H., & Li, Y. (2013). Improved early postresuscitation EEG activity for animals treated with hypothermia predicted 96 hr neurological outcome and survival in a rat model of cardiac arrest. BioMed Research International, 2013. https://doi.org/10.1155/2013/312137

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free