A 64-year-old male presents with intermittent claudication in his calves after walking 200 meters, which resolves with rest. Physical examination demonstrates diminished dorsalis pedis pulses. Ankle-brachial index (ABI) is measured at 0.62 in the right leg. What condition does this confirm?
Answer and explanation
Correct answer: A. Peripheral artery disease (PAD)
- Step 1: An ankle-brachial index (ABI) <= 0.90 is diagnostic of lower extremity peripheral artery disease.
- Step 2: A value of 0.62 indicates moderate arterial insufficiency caused by atherosclerotic narrowing.
Answer
Peripheral artery disease (PAD).
Why not the others: 'Deep vein thrombosis (DVT)' presents with acute unilateral leg swelling, warmth, and calf pain without claudication; 'Lumbar spinal canal stenosis' causes pseudoclaudication relieved by leaning forward (shopping cart sign) with normal pulses; 'Diabetic peripheral polyneuropathy' presents with stocking-glove sensory loss.
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