The effect of pentobarbital sodium on the dorsal horn of the spinal cord.
Journal of anesthesia(1994)
摘要
The effect of intravenously administered pentobarbital sodium on the activity of single unit in Rexed lamina V of the transected feline lumbar spinal cord was studied using an extracellular microelectrode recording technique. Pentobarbital sodium 1.0 mg·kg(-1), 2.5 mg·kg(-1), and 5.0 mg·kg(-1) administered intravenously suppressed both the spontaneous and the evoked activity in Rexed lamina V cells, known to respond principally to noxious stimuli, in a dose-dependent manner. The maximum depression of cell activity occurred within 5 min after intravenous administration. The recovery of cell activity occurred within 70 min after intravenous administration of pentobarbital sodium. We conclude that pentobarbital sodium intravenously administered has a suppressive effect on single unit activity of cells in Rexed lamina V and probably has an analgesic effect. Its suppressive effect is dose-dependent.
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关键词
extracellular recording technique,spinal cord,rexed lamina v,pentobarbital sodium,dorsal horn
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