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43 Cards in this Set
- Front
- Back
What do we know about AO (3 Layers)
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Adventia-. Medial. Intima.
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Vasa vasorum
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small blood vessels that nourish the outer part of the vessel
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This is stretched in----- recoils in ---- to maintain the forward flow of blood throughout the cardiac cycle
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systole
diastole |
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LV is contracting in systole the aorta is
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stretching to accommodate the blood
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What are things that can cause premature loos of elasticity
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HTN, HIGH CHOLESTEROL, CAD, AGE
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What can we do to image the AO
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CHEST X-RAY, MR, CT, TEE, THE,
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what is Aortic dissection in a artery
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Happens when you have entry of blood into the medial layer due to a tear in the vasa vasorum or due to tear in the aortic intima
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What is a complication of aortic dissection
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Marfan Syndrome
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Possible complication of AOrtic dissection
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pregnancy
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Majority of pts that show up with Aortic dissection
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Middle age/elderly men with systemic HTN
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What is systemic HTN
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greater than 140/90
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Symptoms of AOrtic dissection
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CP,
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Debakey Classification
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TYPE 1
TYPE 2 TYPE 3 A & B |
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Stanford Classification
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TYPE A
TYPE B |
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Stanford which one is more common dissection TYPE A OR B
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TYPE A accounts for 2/3 of cases
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Dissection usually occurs
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few cm above the AO valve, Right after LSA
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Which one is more worrysome stanford
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Type A requires immediate surgical repair
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What can cause AO dissection
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TRAUMA, 15-20% pts with AO dissection have intramural hematoma.
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Intramural Hematoma
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increase echogencity along the wall which represents thrombus between the INTIMA and ADVENTIA
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Intramural Hematoma precursor to
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AO dissection
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it can occlude branches of descending AO examples?
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BLOCK renal arteries- damage the kidney, Block iliac arteries - lower extremity will be affected .
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if it tears backwards to the proximal ascending AO you will see
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AI, or occlude coronary artery
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PT with dissection 2 problems
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Rupture of the AO, Compromising blood flow to organ
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Aortic rupture common cause
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TRAUMA status post MVA
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what is holding the descending AO in place
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Descending AO held back to spine by the intercostal arteries. the intercostal arteries anchor the descending AO
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what anchors the AO ARCH
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Nothing Holds the AO arch
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Most common place for Rupture
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right below the LSA
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Which aneurysm is more common abdominal or thoracic
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abdominal
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Which aneurysm is more common ascending or descending?
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Descending is more common
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Aneurysm in AO ARCH is
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RARE
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What is usually causes aneurysm in the descending AO
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atheroscelorsis- primary and common causes of aneurysms descending AO. Due to atrophy of the media and advent with fibrous replacement
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What is the most likely cause of ascending thoracic AO aneurysm
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CYSTIC MEDIAL NECROSIS
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CYSTIC MEDIAL NECROSIS. Aneurysm is located? Can be associated with?
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is when the medial layer weakens and expands due to the degenerative change. AO ROOT. AI.
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Marfan SYndrome associated with
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MVP, AO ROOT DILATATION, HIGH RISK for AO dissection or aneurysm
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Sinus of valsalva Aneurysm. Located
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right after the leaflets of AO valve
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3 causes of sinus of valsalva aneurysm
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congenital, infection, inflammatory
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Sinus of valsalva aneurysm can compress
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RV, RA
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Rupture into cardiac CH present as a ---- where would it rupture to?
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Shunt defect. Rupture to the right side of the heart.
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How is pt going to feel sinus of valsalva ruptures?
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Abrupt onset CP, Brealthlessness, Cardiac failure will develop
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Coaractation of AO
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is narrowing of the descending AO usually immediately distal to the LSA
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Coaractation is associated with
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Turner syndrome, Congenital Anomalies- bicuspid AO valve, PDA,VSD aneurysm of circle of willis.
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Doppler area of narrowing you should see
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increase velocity
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Pt with HTN should always be evaluated with Coaractation of the AO why?
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if you have coaractation of the descending thoracic aorta what will happen above it. ARCH OF AO increase pressure .
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