Acute Upper Limb Ischaemia
Acute upper limb ischaemia is sudden loss of arterial perfusion to the arm, usually from a cardiac embolus in an elderly patient with AF. Compared with the leg, it is more often embolic, less often limb-threatening and less immediately life-threatening, but long-term mortality is high because it marks severe cardiac disease. Decide whether the arm is threatened and whether there is good inflow. Typical embolus + threatened arm + palpable axillary/proximal brachial pulse usually proceeds to brachial embolectomy under local anaesthetic; otherwise image first.
Written September 23, 2026 · Mr Razhan K Ali
1 · UNDERSTAND — What is happening?
Epidemiology
- Incidence is about one-fifth that of acute leg ischaemia; mean age about 74.
- Danish national cohort of 1377 upper-limb thrombo-embolectomies: incidence 3.3 per 100,000 person-years in men and 5.2 in women; 63% women; mean age 72 in men and 77 in women.
Causes
Cardiac embolism is the most common cause; thrombosis is less common. Other causes include thrombophilia, arterial thoracic outlet syndrome such as cervical rib, radiation-induced stenosis, arteritis, subclavian aneurysm, trauma and iatrogenic injury. Suspected aortic dissection is another reason to image before treatment. Dialysis access-related hand ischaemia is covered separately.
Why the arm is more forgiving
Rich collaterals around the shoulder and elbow mean many arms remain viable after occlusion. The cost of undertreatment is forearm claudication and loss of hand function.
Presentation and assessment
The diagnosis is clinical; the level of occlusion is found by palpating pulses. Key questions: is the axillary/proximal brachial pulse palpable; is there motor or sensory loss or forearm muscle tenderness; and is there an arterial Doppler signal at the wrist? Look for the embolic source: AF on ECG, recent MI, stroke, gut or leg emboli.
Grading threat
ESVS describes the non-threatened arm as no motor or sensory loss, no muscle tenderness and audible arterial Doppler signals at the wrist. Motor or sensory loss or muscle tenderness means threatened arm.
Imaging
- Confirmation is by duplex or CTA; CTA is used in most cases when imaging is needed.
- Pre-operative imaging is recommended unless the occlusion is obviously embolic, the limb is immediately threatened, and the axillary or proximal brachial pulse is palpable.
- If the artery is patent on imaging, perform an elevation/stress test with duplex or DSA to reveal a thoracic outlet mechanism.
2 · DECIDE — What do I do next?
Step-by-step algorithm
- Start treatment on arrival: systemic heparin, IV fluids, oxygen; treat AF.
- Typical embolus? AF/recent MI, sudden onset and normal pulses elsewhere support embolus. Atypical story, young patient, cervical rib/elevation symptoms, previous radiotherapy, subclavian aneurysm or possible dissection means image first.
- Threatened arm with palpable axillary/proximal brachial pulse: proceed to brachial embolectomy under local anaesthetic; no pre-operative imaging needed.
- Not threatened: anticoagulation with close review or embolectomy may be reasonable depending on hand function and deterioration.
- Absent axillary pulse: CTA first; treat the proximal cause rather than performing blind brachial embolectomy.
- Completion check: angiography, or visible hand perfusion with palpable wrist pulse.
- Treat the source: ECG monitoring, echocardiography and long-term anticoagulation where indicated.
Decision modifiers
| Situation | Implication | Basis |
|---|---|---|
| Typical embolus, threatened arm, palpable axillary pulse | Proceed directly to brachial embolectomy; imaging not required | ESVS Rec 56, I C |
| Atypical cause or absent axillary pulse | Image before treatment; blind embolectomy may worsen ischaemia | ESVS text |
| Arm threatened or hand function important | Anticoagulation alone is not recommended | ESVS Rec 57, III C |
| Arm not threatened | Anticoagulation alone may be appropriate with close review | ESVS text |
| Young patient, cervical rib, symptoms on elevation | Suspect arterial TOS; image the subclavian artery and treat the cause | ESVS / SVS reporting standards |
UK context
There is no NICE guideline dedicated to ALI. NCEPOD 2025 covers ALI of the arm or leg, highlights pathway delays and recommends a national ALI guideline.
3 · JUSTIFY — Why is that the correct decision?
Mechanism → evidence → guideline → decision. Cardiac emboli lodge in the brachial artery. Collaterals often keep the arm alive but not fully functional. Observational series show embolectomy under local anaesthetic is effective and preserves function. ESVS favours surgery unless the arm is not threatened and function is less important.
The evidence: no RCTs exist
| Study | Population | Result that matters |
|---|---|---|
| Eyers & Earnshaw 1998 | Systematic review | Circulation restored 65–94%; amputation 0–18%; mortality 0–19%, mostly cardiac; up to half have late symptoms after conservative treatment. |
| Danish national cohort 2010 | 1377 thrombo-embolectomies | Amputation 2.2% in men and 3.6% in women; stroke risk 2–16x and death risk 3–11x the general population. |
| Licht 2004 | 148 patients, median age 78 | 30-day mortality 8%; 5-year survival 37%; duration of ischaemia did not affect long-term arm function. |
| Deguara 2005 | UK single centre, 20 years | Mortality after embolectomy 18.2% (10/55), from cardiopulmonary causes. |
| Zaraca 2012 | 100 embolic upper-limb ischaemias | Routine completion angiography was associated with more extension of procedure for residual lesions and lower 24-month re-occlusion; 24-month mortality remained 70%. Interpret exact re-occlusion percentages cautiously because the abstract ordering is internally inconsistent. |
Bottom line: the limb usually survives; the patient often does not. Upper-limb embolism is a marker of severe cardiovascular disease. Treat the arm to preserve function, then treat the heart.
Controversies
- Conservative versus operative management for the non-threatened arm.
- Technical questions remain: incision, brachial bifurcation dissection, whether to reopen both forearm arteries, arteriotomy orientation, catheter size and repair method.
- Completion imaging can be routine angiography or careful clinical confirmation with visible hand perfusion and palpable wrist pulse.
- Endovascular therapy is supported mainly by case reports.
4 · PERFORM — How is management executed?
- Initial treatment: systemic anticoagulation, IV fluids, oxygen and medical optimisation including AF management.
- Decide on imaging: omit pre-operative imaging only when typical embolus, immediate threat and palpable proximal inflow are all present.
- Brachial embolectomy: the default operation. Bypass is seldom needed acutely. Perform under local anaesthetic with an anaesthetist present, with option of sedation and resuscitation.
- Completion check: angiography, or visible perfusion with a palpable wrist pulse if the result is clearly good.
- Endovascular options: thrombectomy, aspiration and CDT are case-report level. Femoral-route arch catheterisation risks cerebral embolism; brachial approach reduces that risk.
- Consent: re-occlusion, further surgery, bleeding/haematoma, rare compartment syndrome, and high background risk of cardiac events, stroke and death.
Procedure link: Brachial Embolectomy.
5 · MANAGE — What happens next / what can go wrong?
| Complication | Recognise | Act |
|---|---|---|
| Re-occlusion | Loss of wrist pulse or Doppler signal | Re-image; re-explore; check anticoagulation. |
| Compartment syndrome | Rare; marked forearm swelling after many hours of ischaemia | Prophylactic fasciotomy seldom indicated. If needed, volar fasciotomy plus/minus dorsal; involve orthopaedic, hand or plastic surgeons. |
| Forearm claudication / poor hand function | Pain on use, reduced grip, mainly after conservative management | Assess; consider revascularisation if disabling. |
| Cardiac death, stroke, further emboli | High risk throughout follow-up | Find and treat the source; anticoagulate where indicated. |
After the arm is saved
- Investigate embolic source: ECG, 24-hour monitoring, echocardiography, and CTA of the whole aorta if no cardiac source.
- Long-term anticoagulation after embolism from AF or intracardiac thrombus; may be considered without AF.
- Mortality is driven by comorbidity, so cardiac optimisation matters as much as the arm result.
Special situations
| Situation | Key point | Basis |
|---|---|---|
| Supracondylar humeral fracture in a child | Vascular compromise 3–14%; pink pulseless hand may be observed if well perfused, with exploration if ischaemia develops or no improvement | ESVS Rec 61 / Griffin review |
| Infant or child under 2 years | Usually iatrogenic from arterial catheterisation; heparin first | ESVS Rec 58 |
| Arterial thoracic outlet syndrome | Subclavian artery compression at the thoracic outlet | SVS reporting standards |
| Dialysis access-related hand ischaemia | Covered separately | ESVS Vascular Access guidelines |
6 · REMEMBER — What must I retain?
- Arm ischaemia is about one-fifth as common as leg ischaemia; patients are older and more often women.
- Mostly cardiac emboli — find the source.
- More often embolic, less limb-threatening and less immediately life-threatening than leg ALI.
- The limb usually survives; the patient often does not.
- Feel the axilla: palpable axillary pulse + typical embolus + threatened arm means brachial embolectomy under local anaesthetic, no imaging needed.
- Absent axillary pulse or atypical story means CTA first.
- Anticoagulation alone is not for a threatened or functionally important arm.
- Conservative care risks forearm claudication in up to half.
- Compartment syndrome is rare; if needed, volar fasciotomy.
- Pink pulseless hand after supracondylar fracture: watchful waiting may be considered if perfused.
Key numbers
| Number | Meaning |
|---|---|
| 1/5 | Incidence relative to leg ischaemia |
| 63% | Women in Danish cohort |
| 2–4% | Amputation after upper-limb thrombo-embolectomy |
| 8% | 30-day mortality in Licht series |
| 37% | 5-year survival in Licht series |
| 3–14% / 28% | Vascular compromise after supracondylar fracture / persisting after reduction |
Memory hook: Feel the axilla, then decide: pulse present — brachial; pulse absent — scan.
References
- Björck M, Earnshaw JJ, Acosta S, et al. Editor's Choice — European Society for Vascular Surgery (ESVS) 2020 Clinical Practice Guidelines on the Management of Acute Limb Ischaemia. Eur J Vasc Endovasc Surg. 2020;59(2):173-218. doi:10.1016/j.ejvs.2019.09.006. PMID: 31899099.
- Eyers P, Earnshaw JJ. Acute non-traumatic arm ischaemia. Br J Surg. 1998;85(10):1340-1346. doi:10.1046/j.1365-2168.1998.00884.x. PMID: 9782011.
- Andersen LV, Mortensen LS, Lindholt JS, Faergeman O, Henneberg EW, Frost L. Upper-limb thrombo-embolectomy: national cohort study in Denmark. Eur J Vasc Endovasc Surg. 2010;40(5):628-634. doi:10.1016/j.ejvs.2010.06.009. PMID: 20619701.
- Licht PB, Balezantis T, Wolff B, Baudier JF, Røder OC. Long-term outcome following thrombembolectomy in the upper extremity. Eur J Vasc Endovasc Surg. 2004;28(5):508-512. doi:10.1016/j.ejvs.2004.08.007. PMID: 15465372.
- Deguara J, Ali T, Modarai B, Burnand KG. Upper limb ischemia: 20 years experience from a single center. Vascular. 2005;13(2):84-91. doi:10.1258/rsmvasc.13.2.84. PMID: 15996362.
- Zaraca F, Ponzoni A, Sbraga P, Stringari C, Ebner JA, Ebner H. Does routine completion angiogram during embolectomy for acute upper-limb ischemia improve outcomes? Ann Vasc Surg. 2012;26(8):1064-1070. doi:10.1016/j.avsg.2011.12.012. PMID: 22743219.
- Griffin KJ, Walsh SR, Markar S, Tang TY, Boyle JR, Hayes PD. The pink pulseless hand: a review of management of vascular complications of supracondylar humeral fractures in children. Eur J Vasc Endovasc Surg. 2008;36(6):697-702. doi:10.1016/j.ejvs.2008.08.013. PMID: 18851922.
- Illig KA, Donahue D, Duncan A, et al. Reporting standards of the Society for Vascular Surgery for thoracic outlet syndrome. J Vasc Surg. 2016;64(3):e23-e35. doi:10.1016/j.jvs.2016.04.039. PMID: 27565607.
- National Confidential Enquiry into Patient Outcome and Death. Risking Life and Limb: A review of the quality of care provided to adults with acute limb ischaemia. London: NCEPOD; 2025.