This Viewpoint discusses changes in the use of ketamine as a medical therapeutic and a recreational substance, the potential risks of use, and the need for increased research and surveillance.

中文翻译：

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美国氯胺酮格局的快速变化

本观点讨论了氯胺酮作为医疗治疗和娱乐物质使用的变化、使用的潜在风险以及加强研究和监测的必要性。