Limb ischemia
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This reference extract addresses Acute limb ischaemia, a related subject. It does not cover every part of Limb ischemia.. The article introduction is reproduced here, so you do not need to leave MedAtlas to read it. It may not match the latest official medical guidance.
Acute limb ischaemia (ALI) occurs when there is a sudden lack of blood flow to a limb within 14 days of symptoms onset. On the other hand, when the symptoms exceed 14 days, it is called critical limb ischemia (CLI). CLI is the end stage of peripheral vascular disease where there is still some collateral circulation (alternate circulation pathways) that bring some blood flow (although inadequate) to the distal parts of the limbs. While limbs in both acute and chronic limb ischemia may be pulseless, a chronically ischemic limb is typically warm and pink due to a well-developed collateral artery network and does not need emergency intervention to avoid limb loss, whereas ALI is a vascular emergency.
Acute limb ischaemia is usually caused by embolism or thrombosis, or rarely by dissection or trauma. 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. Early detection and steps towards fixing the problem with limb-sparing techniques can salvage the limb. Compartment syndrome is an occasional complication that may also occur in acute limb ischaemia because of the biotoxins that accumulate distal to the occlusion resulting in edema.
How this connects to Vascular Surgery
Perioperative and interventional study starts with the relevant anatomy, physiological reserve, intended benefit and potential harms. Preprocedure planning includes appropriate assessment, consent and monitoring; techniques themselves require accredited practical training and patient-specific oversight.
Text credit: Wikipedia contributors, “Acute limb ischaemia”, original article · authors & revision history · CC BY-SA 4.0. Unmodified opening extract, accessed 24 September 2026. This Wikipedia-derived section is provided under CC BY-SA 4.0; the independent MedAtlas notes and design are separate works.
Limb ischemia · visual study map
Scalable vector illustration. Labeled conceptual map, not a precise anatomical, histological or diagnostic image.The wording in this learning map is adapted from the attributed Wikipedia background section below (CC BY-SA 4.0).
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