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Journal of Korean Neurosurgical Society 1988;17(4): 625-630. |
| The Comparision of Histologic & Electrophysiologic Changing Area after Monopolar Coagulation in the Rabbit Brain. |
| Seung Chan Baek, Jowa Hyuk Ihm, Oh Lyong Kim, Yong Chul Chi, Byung Yearn Choi, Soo Ho Cho, Hyun Jin Shin, Joon Ha Lee |
| Department of Neurosurgery, Yeungnam University, College of Medicine, Taegu, Korea. |
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| ABSTRACT |
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Lesions with controlled monopolar coagulation were generated in the cerebral cortex of 20 healthy rabbits. With 28 watts monopolar coagulation, average diameter of histologically changed area around lesion was aout 7.5mm with using Evans blue dye technique. At same time, EEGs in three points, which were 5mm, 10mm & 15mm distant from the coagulated lesion site, were cheched before and just after coagulation.
In results, the frequency of EEG was slightly decreased after coagulation, but there were no relation with distance from lesion. But the amplitudes of EEG were decreased as 51.2 micro v(61.2%), 42.9 micro v(3.9) and 34.0 micro v(25.3%) after coagulation, which depended on the distance from site of coagulation. That means electrophysiologically changed area after coaguation was far beyond the histologically changed area. |
| Key Words:
Monopolar coagulation; Histological changes; Rabbit EEG; Electrophysiologic changes |
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