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Acute limb ischaemia (also spelled acute limb ischemia, or ALI) occurs when there is a sudden lack of blood flow to a limb. Acute limb ischaemia is caused by embolism or thrombosis, or rarely by dissection or trauma.〔http://www.nejm.org/doi/full/10.1056/NEJMcp1006054〕 Thrombosis is usually caused by peripheral vascular disease (atherosclerotic disease that leads to blood vessel blockage), while an embolism is usually of cardiac origin. In the United States, ALI is estimated to occur in 14 out of every 100,000 people per year. With proper surgical care, acute limb ischaemia is a highly treatable condition; however, delayed treatment (beyond 6 to 12 hours) can result in permanent disability, amputation, and/or death. The New Latin term ''ischaemia'' as written, is a British version of the word ''ischemia'', and stems from the Greek terms ''ischein'' 'to hold'; and ''haima'' 'blood'.〔"Ischaemia." Merriam-Webster. Last modified 2012. http://www.merriam-webster.com/dictionary/ischemia?show=0&t=1334804041〕 In this sense, ischaemia refers to the inhibition of blood flow to/through the limb. ==Related ischaemic conditions== When a limb is ischemic in the non-acute (chronic) setting, the condition is alternatively called peripheral artery disease or critical limb ischemia, rather than ALI. In addition to limb ischemia, other organs can become ischemic, causing: * Renal ischemia (nephric ischemia) * Mesenteric ischemia * Cerebral ischemia * Cardiac ischemia 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「Acute limb ischaemia」の詳細全文を読む スポンサード リンク
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