Subclavian steal syndrome

Jump to navigation Jump to search
Subclavian steal syndrome
ICD-10 G45.8
ICD-9 435.2
DiseasesDB 31525
MeSH D013349

WikiDoc Resources for Subclavian steal syndrome

Articles

Most recent articles on Subclavian steal syndrome

Most cited articles on Subclavian steal syndrome

Review articles on Subclavian steal syndrome

Articles on Subclavian steal syndrome in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Subclavian steal syndrome

Images of Subclavian steal syndrome

Photos of Subclavian steal syndrome

Podcasts & MP3s on Subclavian steal syndrome

Videos on Subclavian steal syndrome

Evidence Based Medicine

Cochrane Collaboration on Subclavian steal syndrome

Bandolier on Subclavian steal syndrome

TRIP on Subclavian steal syndrome

Clinical Trials

Ongoing Trials on Subclavian steal syndrome at Clinical Trials.gov

Trial results on Subclavian steal syndrome

Clinical Trials on Subclavian steal syndrome at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Subclavian steal syndrome

NICE Guidance on Subclavian steal syndrome

NHS PRODIGY Guidance

FDA on Subclavian steal syndrome

CDC on Subclavian steal syndrome

Books

Books on Subclavian steal syndrome

News

Subclavian steal syndrome in the news

Be alerted to news on Subclavian steal syndrome

News trends on Subclavian steal syndrome

Commentary

Blogs on Subclavian steal syndrome

Definitions

Definitions of Subclavian steal syndrome

Patient Resources / Community

Patient resources on Subclavian steal syndrome

Discussion groups on Subclavian steal syndrome

Patient Handouts on Subclavian steal syndrome

Directions to Hospitals Treating Subclavian steal syndrome

Risk calculators and risk factors for Subclavian steal syndrome

Healthcare Provider Resources

Symptoms of Subclavian steal syndrome

Causes & Risk Factors for Subclavian steal syndrome

Diagnostic studies for Subclavian steal syndrome

Treatment of Subclavian steal syndrome

Continuing Medical Education (CME)

CME Programs on Subclavian steal syndrome

International

Subclavian steal syndrome en Espanol

Subclavian steal syndrome en Francais

Business

Subclavian steal syndrome in the Marketplace

Patents on Subclavian steal syndrome

Experimental / Informatics

List of terms related to Subclavian steal syndrome

Template:WikiDoc Cardiology News Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

In medicine, subclavian steal syndrome (SSS), also subclavian steal phenomenon and subclavian steal steno-occlusive disease, is a constellation of signs and symptoms that arise from retrograde (reversed) vertebral artery (blood) flow or retrograde internal thoracic artery flow due to a proximal subclavian artery stenosis (narrowing) and/or occlusion.

Pathophysiology

Classically, subclavian steal syndrome is a consequence of a redundancy in the circulation of the brain[1][2] and hemodynamics (the physics of blood flow).

Subclavian steal syndrome results when the short low resistance path (along the subclavian artery) becomes a high resistance path (due to narrowing) and blood flows around the narrowing via the arteries that supply the brain (left and right vertebral artery, left and right internal carotid artery). The blood flow from the brain to the upper limb in SSS is considered to be stolen as it is blood flow the brain must do without.

As in vertebral-subclavian steal, coronary-subclavian steal may occur in patients who have received a coronary artery bypass graft using the internal thoracic artery (ITA).[3] As a result of this procedure, the distal end of the ITA is diverted to one of the coronary arteries (typically the LAD), facilitating blood supply to the heart.

In the setting of increased resistance in the proximal subclavian artery, blood may flow backward away from the heart along the ITA causing myocardial ischemia. Vertebral-subclavian and coronary-subclavian steal can occur concurrently in patients with an ITA CABG.[4]

Hemodynamics

Blood, like electrical current, flows along the path of least resistance. If blood is presented with two paths a short one that is very narrow (with a high overall resistance) and a long one that is wide (with a low overall resistance) it will take the long and wide path (the one with the lower resistance).

Vascular anatomy

The blood vessels supplying the brain arise from the vertebral arteries and internal carotid arteries and are connected to one another by communicating vessels that form a circle (known as the cerebral arterial circle).

Path of the blood (normal versus SSS)

Normally, blood flow from the aorta into the subclavian artery and then some of that blood leaves via the vertebral artery to supply the brain.

In subclavian steal syndrome a reduced quantity of blood flows through the proximal subclavian artery. As a result, blood travels up one of the other blood vessels to the brain (the other vertebral or the carotids) goes around the cerebral arterial circle and via the (ipsilateral) vertebral artery to the subclavian (with the proximal blockage) and feeds blood to the distal subclavian artery (which supplies the upper limb and shoulder).

Etiology

Signs and symptoms

Associated with other stigma to vascular disease (e.g. vascular insufficency ulcers of the foot).

Diagnostic tests

Differential diagnosis

Treatment

See also

References

  1. Klingelhöfer J, Conrad B, Benecke R, Frank B (1988). "Transcranial Doppler ultrasonography of carotid-basilar collateral circulation in subclavian steal". Stroke. 19 (8): 1036–42. PMID 3041649.
  2. Lord R, Adar R, Stein R (1969). "Contribution of the circle of Willis to the subclavian steal syndrome". Circulation. 40 (6): 871–8. PMID 5377222.
  3. Takach T, Reul G, Cooley D, Duncan J, Livesay J, Ott D, Gregoric I (2006). "Myocardial thievery: the coronary-subclavian steal syndrome". Ann Thorac Surg. 81 (1): 386–92. PMID 16368420.
  4. Lee S, Jeong M, Rhew J, Ahn Y, Na K, Song H, Bom H, Cho J, Ahn B, Park J, Kim S, Kang J (2003). "Simultaneous coronary - subclavian and vertebral - subclavian steal syndrome". Circ J. 67 (5): 464–6. PMID 12736489.

External links

Template:Cerebrovascular diseases


Template:WikiDoc Sources