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The Analysis of Quantitative EEG to the Left Cranial Cervical Ganglion Block in Beagle Dogs  

Park, Woo-Dae (Department of Veterinary Nurse and Pet Science, Seojeong College)
Bae, Chun-Sik (College of Veterinary Medicine, Biotechnology Research Institute, Chonnam National University)
Kim, Se-Eun (College of Veterinary Medicine, Biotechnology Research Institute, Chonnam National University)
Lee, Soo-Han (Department of Clinical Pharmacology and Therapeutics, College of Medicine, Ulsan University)
Lee, Jung-Sun (Modern Cell & Tissue Technologies Research Institute)
Chang, Wha-Seok (Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University)
Chung, Dai-Jung (Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University)
Lee, Jae-Hoon (Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University)
Kim, Hwi-Yool (Department of Veterinary Surgery, College of Veterinary Medicine, Konkuk University)
Publication Information
Journal of Veterinary Clinics / v.24, no.4, 2007 , pp. 514-521 More about this Journal
Abstract
The sympathetic nerve block improves the blood flow in the innervated regions. For this region, the sympathetic nerve block has been performed in the neural and cerebral disorders. However, the cerebral blood flow regulation of the cranial cervical ganglion block in dogs have not been well defined and the correlation to the changes in the cerebral circulation and the changes in the electroencephalogram is not well defined in dogs yet. Therefore, we investigated the hypothesis that changes in the EEG could be affected by the changes in cerebral blood flow following the cranial cervical ganglion block in dogs. Twenty five beagle dogs were divided into 3 groups; group I(LCCGB, n=10) underwent left sided cranial cervical ganglion block using the 1% lidocaine, group II(L, n=10) injected the 1% lidocaine into the right or left sided digastricus muscle, group III(N/SCCGB, n=5, served as control) underwent the left sided cranial cervical ganglion block using saline. A statistical difference was not found between the control group and the LCCGB group in the 95% spectral edge frequency(SEF) and the median frequency(MF). In the relative band power, the $\delta$ frequency was decreased during 5-25 min, while the $\alpha$ frequency was increased during the same time(p<0.05). But the $\theta$ frequency and the $\beta$ frequency were not shown the significant changes compared with the control group during the same time(p<0.05). These results suggest that the left cranial cervical ganglion block does not induce the change of the cerebral blood flow and its effect is insignificant.
Keywords
Cerebral blood flow; nerve block; spectral edge frequency; sympathetic nervous system; quantitative EEG;
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