CONTROVERSIES
15. Can carotid endarterectomy be performed on the basis of duplex study alone?
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The argument for elimination of arteriography in selected cases is persuasive because the carotid arteriogram alone has a morbidity rate >...
PERIPHERAL ARTERIAL OCCLUSIVE DISEASE
11. What is the primary test for diagnosis of lower extremity ischemia?
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The ankle brachial index (ABI) or systolic pressure ratio is normally greater than or equal to 1.0. Typically, Doppler...
VENOUS DISEASE
7. What noninvasive test is used to diagnose acute DVT?
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Duplex ultrasound has replaced venous occlusion plethysmography as the accepted standard. Colorflow duplex is useful because it helps to identify small veins...
CEREBROVASCULAR DISEASE
3. Which noninvasive tests should be used to diagnose extracranial carotid artery disease?
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Duplex ultrasound has a sensitivity of 97% in detecting carotid artery disease and an accuracy of 95% in correctly...
73 NONINVASIVE VASCULAR DIAGNOSTIC LABORATORY
Darrell N. Jones Ph.D.
1. What is the role of the vascular diagnostic laboratory (VDL) in the assessment and treatment of patients with suspected vascular disease?
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Although...
72 VENOUS DISEASE
Thomas A. Whitehill M.D., Mark Nehler M.D.
1. Where does deep venous thrombosis (DVT) originate?
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More than 95% of DVTs develop in the deep veins of the lower extremities; the majority originate in the...
71 ABDOMINAL AORTIC ANEURYSM
Mark Nehler M.D., William C. Krupski M.D.
1. What is an abdominal aortic aneurysm (AAA)?
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A ≥ 50% increase in normal aortic diameter. Normal infrarenal aortic diameter is 2.0 cm for men. A...
CONTROVERSY
29. What is the role of CEA?
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Although CEA remains the standard of care for carotid artery disease, percutaneous angioplasty with stenting has been investigated as an alternative. The underlying rationale is to decrease...
70 CAROTID DISEASE
Rao Gutta M.D., B. Timothy Baxter M.D.
1. What diseases affect the carotid arteries?
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Atherosclerosis is by far the most common (accounting for 90% of lesions in the Western world). The carotid also can be...
69 ARTERIAL INSUFFICIENCY
Mark Nehler M.D., William C. Krupski M.D.
1. Describe claudication and its physiology.
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Intermittent claudication consists of reproducible lower extremity muscular pain induced by exercise and relieved by...
68 WHAT IS ATHEROSCLEROSIS?
Craig H. Selzman M.D.
1. Are elderly individuals the only ones who have atherosclerosis?
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No. The initial (or type I) lesion, consisting of lipid deposits in the intima, has been well characterized in...
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