What is the Ankle Brachial Index (ABI) in this patient? - USMLE Forums
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Old 04-08-2012
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Vascular What is the Ankle Brachial Index (ABI) in this patient?

A 62-year-old diabetic woman presents with numbness throughout her left foot progressing over the last month. She notes a 6-year history of bilateral leg pain in her calves with walking, 15 years of type II diabetes, a 25 pack-year smoking history, and shows the physician a 2-year old prescription for pentoxifylline given to her by another doctor. After completing the history, the physician proceeds to physical examination. What are the expected ankle-brachial indices?

A. Ankle-brachial index (ABI) < 0.4
B. Ankle-brachial index (ABI) > 0.4. and < 0.7
C. Ankle-brachial index (ABI) > 1.0
D. Ankle-brachial index (ABI) > 1.8
E. Ankle-brachial index (ABI) > 8.0

PLEASE GIVE EXPLN PLEASE PLEASE !!!!!!:sorry::sorry::sorry::sorry:
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Old 04-08-2012
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answer. B .
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Old 04-08-2012
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Default moderate arterial disease

Hi:

ABI between 0.5~0.8 is moderate artrial disease, below 0.5 is severe arterial disease, this patient is more likely to have moderate arterial disease.

Please correct me if i am wrong. ; )
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Old 04-09-2012
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Default B. Ankle-brachial index (ABI) > 0.4. and < 0.7

B. Ankle-brachial index (ABI) > 0.4. and < 0.7
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Old 04-15-2012
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when the answer will come...?
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I'm Predictable In The Unpredictable Future !
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ans is BMI <.4

qbank says patient described has severe PVD and that means BMI <.4.
why severe? no suitable expln in qbank for that.
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B. Ankle-brachial index (ABI) > 0.4. and < 0.7
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Old 03-05-2013
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A Due to pain in both legs and long history of DM and smoking.

Normal ABI ranges from 1.0 1.4
  • Pressure is normally higher in the ankle than the arm.
Values above 1.4 suggest a noncompressible calcified vessel.
  • In diabetic or elderly patients, the limb vessels may be fibrotic or calcified. In this case, the vessel may be resistant to collapse by the blood pressure cuff, and a signal may be heard at high cuff pressures. The persistence of a signal at a high pressure in these individuals results in an artifactually elevated blood pressure value.
An value below 0.9 is considered diagnostic of PAD.
Values less than 0.5 suggests severe PAD.
  • Individuals with such severe disease may not have sufficient blood flow to heal a fracture or surgical wound; they should be considered for revascularization if they have a non-healing ulcer
http://stanfordmedicine25.stanford.edu/the25/ankle.html
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