Lab 3: Aortic Aneurysm & Dissection Flashcards
ID
true aneurysm
ID
False aneurysm
Occur when the structure or function of the connective tissue within the vascular wall is compromised secondary to defects in synthesis or breakdown of connective tissue (e.g. collagen, elastin)
aneurysm
Aneurysm where quality of vessel wall connective tissue is poor
Ehlers-Danlos Syndrome (EDS)
Aneurysm where abnormal TGF-B signaling is affected
Marfan and Loeys-Dietz
Factors contributing to aneurysms
Ischemia and inflammation
Two most important causes of aortic aneurysms
Atherosclerosis and hypertension
results in thickening of the intima which then results in increasing the distance that oxygen and nutrients must diffuse—the overall effect is ischemia of the inner media thus weakening the vessel wall
Atherosclerosis
can cause significant narrowing of arterioles of the vasa vasorum of large vessels like the aorta which decreases the blood supply to the outer media of that vessel resulting in ischemia and subsequently vessel wall weakening
Hypertension
ID
cystic medial degeneration
what does Abdominal Aortic Aneurysm (AAA) most commonly occur as a consequence of
Atherosclerosis
What diameter of Abdominal Aortic Aneurysm (AAA) is most concerning
> 5 cm
ID
Abdominal Aortic Aneurysm (AAA) that ruptured
What is a Thoracic Aortic Aneurysm (TAA) most commonly associated with?
hypertension
ID
Thoracic Aortic Aneurysm (TAA)