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Ketamine
Ketamine is a medication used mainly for starting and maintaining anesthesia. Other uses include sedation in intensive care, as a pain killer, as treatment of bronchospasm, as a treatment for complex regional pain syndrome and as an antidepressant. It induces a trance-like state while providing pain relief, sedation, and memory loss.〔 Heart function, breathing, and airway reflexes generally remain functional.
Common side effects include psychological reactions as the medication wears off.〔 These reactions may include agitation, confusion, or psychosis.〔(【引用サイトリンク】url=http://www.drugs.com/pro/ketamine-injection.html )〕〔 Elevated blood pressure and muscle tremors are relatively common, while low blood pressure and a decrease in breathing is less so.〔〔(【引用サイトリンク】url=http://www.drugs.com/sfx/ketamine-side-effects.html )〕 Spasms of the larynx may rarely occur.〔
Pharmacologically, ketamine is classified as an NMDA receptor antagonist, but it also acts at numerous other sites (including opioid receptors and monoamine transporters). Like other drugs of the arylcyclohexylamine class, such as phencyclidine (PCP), ketamine is classified as a dissociative agent.
Ketamine was first developed in 1962. It is on the World Health Organization's List of Essential Medicines, the most important medication needed in a basic health system. It is legally sold under a very wide variety of brand names, including Ketalar.
==Uses==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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