Ankle-Brachial Index

Helpful in diagnosis of peripheral arterial disease

Also, decreased ABI associated with high-risk CAD, stroke, TIA, renal insufficiency and all-cause mortality.

Normal:  0.9 – 1.3

> 1.3 = calcified, sclerotic vessels

< 0.9 if occlusive arterial disease (95% sens, 100% spec)

< 0.4 suggestive of multilevel disease (iliac, femoral, tibial) and associated with non-healing ulcers and gangrene

For diabetics, a toe-brachial index is preferred because of sparing from calcification

  • TBI 0.7-0.8 is normal range.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s