Vascular Flashcards
What is an aneurysm?
a focal dilatation of a vessel >50% of its normal
What is the difference between a true and pseudo aneurysm?
true involves all 3 parts of a vessel wall whereas psuedo only involves the tunica externa
What are some congenital causes of aneurysm?
ehlers danlos
marfans
AD polycystic kidney disease
What are some acquired causes of aneurysm?
idiopathic trauma iatrogenic vasculitis infectious
What are some modifiable risks for anuerysm?
smoking
hypertension
hypercholesterol
obesity
What are some non-modifiable risks for aneurysm?
male
age
family hx
ethnicity
What is the overall mortality of a ruptured AAA?
85%
What type of AAA rupture is always fatal?
intra-peritoneal
Which type of aneurysm causes lots of thrombo-emboli to be released?
popliteal
What increases the risk of aneurysm rupture?
size
the larger the vessel radius the larger the wall tension needed to withstand the internal fluid pressure
What law describes the increased risk of aneurysm rupture in larger vessels?
la place
How should an asymptomatic individual be screened for AAA?
us
How should a symptomatic individual be screened for AAA?
CT angiogram
At what size should repair of an asymptomatic AAA be considered?
> 5.5cm
How does ruptured AAA present?
collapse
hypotension
sudden onset abdo/back pain
expansile abdominal mass
