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An epinephrine autoinjector, is a medical device for injecting a measured dose or doses of epinephrine (adrenaline), by means of autoinjector technology; it is most often used for the treatment of anaphylaxis. The EpiPen is derived from the Mark I NAAK ComboPen, which was developed for the U.S. military for treating exposure to nerve agents in the course of chemical warfare. Trademark names for the autoinjector device include EpiPen, Emerade, Twinject, Adrenaclick, Anapen, Jext, Allerject, and Auvi-Q. == Medical uses == After activation, the patient holds the device in place for between 5 and 10 seconds as the epinephrine is delivered. This gives the drug enough time to be absorbed by the body's muscles and diffused into the bloodstream. Auto-injectors are sometimes used unnecessarily. Injection into a vein (intravenous injection) can be fatal. It can cause ventricular tachycardia, in which the heart beats uncontrollably and is not able to pump blood adequately. It can also restrict blood flow to the area of the injection site, and damage the extremities.〔http://www.bmj.com/cgi/content/full/326/7389/589〕 After administering the device, patients are advised to seek immediate medical attention. An emergency technique (not manufacturer-approved) to obtain additional epinephrine from a used autoinjector has been published in the medical literature. Units that have exceeded their expiration date can still be used in an emergency if an unexpired unit is unavailable and the solution is neither discoloured nor contains precipitates. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Epinephrine autoinjector」の詳細全文を読む スポンサード リンク
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