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Circulation

ABI & physiologic testing

Comparing the blood pressure at your ankles with your arms.

An ankle-brachial index (ABI) compares blood-pressure measurements at the ankles with those at the arms. Related physiologic testing may include additional cuffs and Doppler measurements to evaluate circulation in the legs.

What it looks for

  • The ratio between ankle pressure and arm pressure
  • A difference between your left and right sides
  • Which level the pressure drops at, when extra cuffs are used
  • The waveform picked up by a small Doppler probe at each site

Step by step

What to expect.

View the exam animation or select a stage to learn more.

REST FIRSTARMTHIGHANKLECUFF INFLATESDOPPLER LISTENSSIGNAL BELOW THE CUFFANKLE-BRACHIAL INDEXANKLEmmHgARMmmHgINDEXratio

Interactive walkthrough

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Exam information

Common questions.

Additional information about the procedure and your visit.

What does cuff inflation feel like?

The cuffs apply pressure as they inflate. Let the sonographer know if you experience pain or discomfort.

How should I prepare?

Wear clothing that allows access to your arms and legs, and follow the instructions provided with your appointment.

How will I receive my results?

A clinician reviews the images and measurements to prepare a report. The practice will publish its results and report-delivery process before appointments become available.

Getting ready

Before you come in.

Wear clothing that allows access to your arms and legs.

Instructions sent with your appointment take priority over anything on this page, even where the two differ.

Afterwards

When it is over.

The cuffs are removed when measurements are complete. Follow any instructions provided after your exam.

The practice will publish who interprets the study and how results are shared after its reporting workflow is approved.

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