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EFFECTS OF PENTOBARBITAL ANESTHETIC INDUCTION ON SENSORY EVOKED POTENTIALS IN CAT Mikio Takaya 1 , Kouzo Moritake 1 , Tsuneki Konishi 1 , Hideyuki Suwa 1 , Hajime Handa 1 1Department of Neurosurgery, Kyoto University Medical School pp.961-966
Published Date 1986/10/1
DOI https://doi.org/10.11477/mf.1406205789
  • Abstract
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During the last decade, noninvasive electro-physiological tests with sensory evoked potentials have rapidly blossomed into useful clinical tools. They have been studied in large groups of normal subjects and in patients with a wide variety of neurologic diseases. Almost all experimental animal studies on sensory evoked potential, however, have not been undertaken under sufficient consideration on the effects of drugs used for induction into anesthesia on evoked potentials. In order to use evoked potentials as a tool for assessing neurol-ogical function in animals, it is necessary to know the effect of anesthetic agents on evoked poten-tials. Pentobarbital, Somnopentyl®, is one of the drugs most commonly used for induction into anesthesia in animal experiments. Authors have attempted to study the long term effects of pen-tobarbital on evoked potentials. Intramuscular administration of anesthetic dose of pentobarbital was followed by prolongation of II and III waves of SEP and I-II interpeak latency of BAEP. Latency of Ni of SEP was also prolonged. On electro-encephalogram, amplitude have increased and fre-quency have got slower after pentobarbital ad-ministration. These electrophysiological changes persisted over 5 hours after pentobarbital ad-ministration.

These results suggest that in some studies on animals the residual effect of agents used for in-duction into anesthesia must be taken account for analysis of data obtained.


Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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