Hadeco Smartdop 30EX - Calculating and Interpreting ABI

Smartdop
®
30EX Vascular Testing Instructions
1. ANKLE BRACHIAL INDEX (ABI) (Cont.)
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Calculating the ABI
To calculate the Ankle Brachial Index ratio, divide the ankle pressure by the highest arm
pressure or refer to the charts on the Pressure Index Guide provided with your Doppler.
Ankle systolic pressure
ABI =
Arm systolic pressure
Interpreting the Results
Normal
Moderate Obstruction
Severe Obstruction
Waveform Examples
> 1.40 = Noncompressible
1.00 - 1.40 = Normal
0.91 - 0.99 = Borderline
0.00 - 0.90 = Abnormal
Creager MA, et al. (2011). 2012 ACCF/AHA/ACR/SCAI/SIR/STS/SVM/SVN/SVS Key Data Elements
and Denitions for Peripheral Atherosclerotic Vascular Disease: A Report of the American College of
Cardiology Foundation/American Heart AssociationTask Force on Clinical Data Standards (Writing
Committee to Develop Clinical Data Standards for Peripheral Atherosclerotic Vascular Disease).
Circulation 2012, 125:395-467. Retrieved December 5, 2011 from http://circ.ahajournals.org/
content/125/2/395.