IR Flashcards
(27 cards)
Where is the most common site of aortic injury
Aortic root - most of these die at the scene
Aortic isthmus is more common in imaging in those who survive
What suggest injury vs aneurysm dilation?
Contour irregularity
How often are the neck branches involved in aortic injury
10-12%
Difference between giant cell and takayasus
Age
Takayasus is
Smooth tapering of the medium and large sized arteries
GC/takayasus
What is the treatment of temporal arteries
Steroids first
What are the phases of takayasus
What is the most threatening complication
What are the 4 types (most common)
Systemic and late occlusive phase
Cerebral ischemia
1- aortic arch and great ceases
2- distal thoracic and abdominal aorta
3- aortic arch and abdominal aorta
4- any type PLUS pulmonary arteries
Type 3 is most common
Fever and leukocytosis with development of saccule aortic aneurysm
Mycotic
Where is a primary aortoenteric fistula usually located
What is a secondary AEF
What is the clinical triad
Infrarenal aorta and 3/4 portion of duodenum
Between bowel and prosthetic graft
GI bleed, sepsis, abdominal pain
Gas and fluid around an aortobifsmoral graft is normal until when
6-7 weeks postoperative
Subclavian steal is what? What’s the difference between the syndrome and the phenomenon
Retrograde flow in a vertebral artery with transient neurological symptoms
Phenomenon is asymptomatic
Which side is subclavian steal more common on
L>R 4:1
How does subclavian steal look on angiogram
Occluded subclavian with swayed retrograde filling of the ipsilateral vertebral and subclavian
What is the appearance of a carotid body glomus tumor on mr and angiogram?
What is the usual blood supply
MR: smooth soft tissue bright T2 which splays the carotid arteries
Angio: highly vascular mass at carotid body
Ascending pharyngeal
What is fontaines sign
Carotid body tumors are mobile in the lateral plane but not craniocaudal
What are the clinical categories of acute limb ischemia
1- viable, no threatened limb
2a- acutely threatened. Slow cap fill, minimal sensory loss, no weakness, no Doppler signals
2b- immediately threatened. Weakness and more pronounced sensory loss, no Doppler. Lytic therapy only if poor surgical candidate
3- irreversible. Major tissue loss or nerve damage. Surgical only
What is the treatment of acute arterial occlusion in peds
Systemic thrombolysis
Can also use pulse spray technique
Renal artery stenosis at the Ostia suggests what underlying process
Atherosclerosis
FMD is more distal
What type of stent is used for renal artery stenosis
Balloon expandable
What is the purpose of alcohol ablation in RCC?
Decreases intraoperative bleeding
What necessitates acute intervention in patients with PE?
Hypotension/shock
RV failure
Need for intubation
What is the difference in treatment between fistula in the deep vs superficial femoral arteries
Deep: coiling or ligation
Superficial: surgery or stent graft
What is may Thurner? When do you suspect it? What is the treatment
Compression of the left iliac vein by the overlying right common iliac artery
Isolated LLE dvt
Self expandable stent
What is a henodynamically significant pressure gradient across a stenosis
> 10mmhg
