Medical Dictionary

ankle-brachial index

noun an·kle-bra·chi·al index

medical Definition of ankle-brachial index

:a measure of the difference in the systolic blood pressure of the arm and ankle calculated by dividing the blood pressure of the ankle by that of the arm
  • Mercy Medical Center-Dubuque will host an ankle-brachial index screening for peripheral artery disease.
  • The Telegraph Herald (Dubuque, Iowa)30 Apr. 2007
Note: A normal ankle-brachial index is considered to be between .95 and 1.2 or .9 and 1.3, with a number below .9 indicating narrowing or blockage of leg arteries.
abbreviation ABI

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