Progress 20 (iPad 1)

mbch4kz2's version from 2016-05-16 17:09


Question Answer
How much greater than the diameter of a lumen must an elargement be to be called an aneurysm?1.5x
What are the 2 types of aneurysm?Saccular and fusiform
Describe a saccular aneurysmSpherical, involves only a portion of the vessel wall, ideal for thrombus formation
Where would you generally find a fusiform aneurysm?Often involves large portions of the ascending and transverse aortic arch, abdominal aorta (less frequently the iliac arteries)- fusiform aneurysm involve all layers of the aorta
What are the layers of the aorta?Intima, media and adventitia
Why do 95% of aortic aneurysm occur below the renal arteries?In the media there is a lot of collagen and elastic. As you progress down the aorta this becomes less- as the person becomes older there is also degeneration of collagen and elastin (most common cause is atherosclerosis)
What sign is typical of retroperitoneal bleeding?Grey turners (appearance of a bruise on the flank)- can also predict a severe attack of acute pancreatitis