Abstract
Objective To determine ff cognitive dysfunction induced by neonatal ketamine anesthesia can persist into adulthood.Methods Thirty 7-day-old SD rats of both sexes were randomly divided into 3 groups.Control group received normal saline 0.2 ml intraperitoneally (IP) (group C),while ketamine groups 1 and 2 received ketamine 25 and 50 mg/kg IP respectively (groups K1,K2 ).Morris water maze test was performed and hippocampal long-term potentiation (LTP) recorded when the rats were 2.5 months old.Results LTP was significantly lower in groups K1 and K2 than in group C.There was no significant difference in LTP between groups K1 and K2.The escape latency and swimming time were comparable among the 3 groups.Conclusion Neonatal ketamine anesthesia can decrease the cognitive function in adult rats.There is no significant difference between light and deep ketamine anesthesia. Key words: Ketamine; Cognition disorders; Infant, newborn; Adult
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