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43 Cards in this Set

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