Subclaviastenose

Subclavian artery stenosis refers to a narrowing of one or both of the subclavian arteries.

Epidemiology

The estimated in the general population as a whole is thought to be around 2-4%, while in those with peripheral vascular disease, it can be as high as 18% .

Pathology

It can arise of number pathological condition with atherosclerosis being the most common by far.

Other rare causes include

• arteritis affecting the subclavian artery.
• radiation
• vascular compression syndromes
• fibromuscular dysplasia
• neurofibromatosis type 1

Location

The left subclavian is considered to be 4 times more commonly affected than the right or innominate artery .

Associations

• up to 50% of patients may have concurrent coronary artery disease

Radiographic features

Ultrasound

May show evidence of subclavian steal on the ipsilateral side.

CT/MR angiography

Allows direct visualization of degree and extent of stenosis.

Treatment and prognosis

Management options include

• angioplasty +/- stenting
• surgical management (bypass)

Some publications have shown that the presence of subclavian stenosis is an independent predictor for total cardiovascular disease mortality .

Siehe auch:

• Subclavian-Steal-Syndrom
• PTA of subclavian artery stenosis
• Arteriitis