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chapter 23 intro to vascular

Terms in this set (28)

aneurysm
a focal dilation of an artery involving all three layers of the vessel wall that exceeds the normal diameter by more than 50%
fusiform
circumferential dilation of a vessel involving all three vessel walls
saccular
asymmetric outpouching dilations of a vessel, often caused by trauma or penetrating aortic ulcers
endoleak
persistent blood flow demonstrated outside a stent graft endovascular repair but within aneurysm sac
endovascular aneruysm repair
placement of a stent graft within an aortic anerursym sac via a catheter as a means of repair
stent
a tube-like structure placed inside a blood vessel to provide patency and support
at about what rate are popliteal aneurysms associated with abdominal aortic aneurysms?
20%
in which of the following patients would an abdominal aortic aneurysm most likely be found?
a 69 year-old male
what causes the indication to evaluate the aortoliliac segments known as blue toe syndrome?
embolic events
to visualize the deep vessels of the abdomen, what transducer frequency is most commonly used?
2 to 5 MHz
what is the most common location for abdominal aortic aneurysms?
infrarenal
which of the following is NOT associated with normal findings in the abdominal aorta?
tortuosity near the bifurcation
at what diameter is teh abdominal aorta considered aneurysmal?
3cm
what shape are most aortic aneursyms?
fusiform
as an abdominal aortic aneurysm enlarges, what does it also tend to do?
elongate
to get the most accurate diameter measurement of the abdominal aorta, how should the technologist align the transduce to the vessel?
perpendicularly
when viewing the abdominal aorta in transverse, which dimension provides the most accurate diameter measurement?
anterior to posterior
during an aortoiliac duplex examination, the distal aorta measures 2.5 cm in diameter, what are these findings consistent with?
aortic ectasia
when an AAA is found, which of the following additional parameters should be included?
- length of aneurysm
-proximity of aneursym to renal arteries
-presence and extent of any intraluminal thrombus
what landmark is used to determine the end of the common iliac artery and beginning of the external iliac artery?
origin of internal iliac artery
what is an important reason to follow up with patients after aortoiliac intervention with duplex ultrasound?
follow-up treatment of restenosis may improve patency rates
when evaluating a stent within the aortoiliac system, which of the following is FALSE?
evaluation of the vessel distal to the stent is not needed
a 65 year old male present to the vascular lab for resentevaluation of the abdomen after involvement in a car accident. during the duplex examination, an asymmetric outpouching is identified in the mid to distal ao. what do these findings represent?
saccular aneurysm
upon duplex evaluation of a known abdominal aortic aneurysm, homogeneous echoes with smooth borders are visualized with the aneurysm sac. what do these findings suggest?
thrombus formation
a 72 year old male presents to the vascular lab for follow up after common iliac stenting. upon examination, the stent in the mid common iliac artery is elliptical in shape. what does this appearance likely indicate?
partial stent compression
during doppler evaluation of the abdominal aorta, two flow channels are noted. what do these findings suggest?
aortic dissection
a 76 year old female patient presents to the vascular lab with left hip and buttock claudication. during the duplex evaluation, velocities in the distal common iliac artery are 72 cm/s, whereas velocities in the proximal external iliac artery are 302 cm/s. which of the following has occured?
>50% stenosis in the proximal external iliac artery
which of the following is not a benefit of endovascular stent graft repair of AA
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