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20 Cards in this Set
- Front
- Back
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Color Duplex Goals |
•Find site of disease •Tell stenosis from occlusion and define length •Find aneurysm |
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Other Goals |
•Identify/guide pseudo treament •Find AVF, AVM •Post op graft evaluation |
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LE Segments |
•Aorto-Iliac •Femoro-popliteal •Tibial |
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Aorto-Iliac |
•Challenging due to gas, depth •Aneurysm, dissection stenosis |
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Femoro-Popliteal |
•Can be scanned before AI •Most PAD in legs occurs here |
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Tibial Arteries |
•Difficult when diseased •Small, slow flow |
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Aneurysm Rule of Thumb |
•AO: >/= 3cm •Iliac: >/= 2cm •Pop: >/= 1cm |
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Aorto-Iliac Occlusion |
•No flow with Spec/Col Doppler •Increase velocity over stenosis •Post stenotic turbulence |
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Severe CIA Stenosis |
•Flow direction may reverse in internal iliac |
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Aorta/Iliac Color Limitations |
•Time consuming, difficult •Color flash, respiratory motion •Bowel gas, depth |
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Chronic Occlusion |
•Locate artery by proximity to vein |
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Occlusion Criteria |
•No flow by color/spectral •Collateral run off •Distal reconstitution |
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Pop A Aneurysm |
•Claudication, rest pain, limb ischemia, blue toe, nerve comp |
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Pop A Aneurysm Risks |
•Thrombosis, emboli, nerve/vein comp, rupture, common in men |
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Pop A Aneurysm Problems |
•Thrombosed: 40-75% amputate •50-70% bilateral •43% have AAA |
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Pseudoaneurysm |
•Hi pressure extravasation of blood into tissue •No encapsulating arterial wall •To and fro flow in neck |
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Pseudoaneurysm Etiology |
•Percute arterial catheterization •Penetrating trauma •Graft anastomosis blow out |
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Pseudoaneurysm Diagnosis |
•Find neck, to/fro flow •Check for torn artery, extrinsic artery compression by PA |
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Long Neck with P-Aneurysm |
•No tear |
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Pseudoaneurysm Treatment |
•Surgery, manual comp with CDI •Thrombin injection |
