Subclavian artery stenosis

Subclavian artery stenosis (SAS) refers to narrowing of one or both of the subclavian arteries.

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% 1,4.

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

Other rare causes include

Location

The left subclavian is considered to 4 times more commonly affected than the right or innominate artery 1.

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

May show evidence of subclavian steal on the ipsilateral side.

CT/MR angiography

Allows direct visualisation of degree and extent of stenosis.

Management options include

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

Some publications have shown that the presence of subclavian stenosis is an independent predictor for total cardio-vascular disease mortality 6.

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Article information

rID: 29025
System: Vascular
Synonyms or Alternate Spellings:
  • Subclavian stenoses
  • Subclavian artery stenoses
  • Subclavian artery stenosis (SAS)
  • Subclavian stenosis (SS)

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Cases and figures

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    Case 1: with subsequent stenting
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