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QUESTION In the US, the most common cause of portal hypertension is Answer: cirrhosis QUESTION The Splanchnic arteries are? And where do they supply blood? Answer: Celiac artery, SMA and IMA. They supply blood to the gut. QUESTION Define chronic mesenteric ischemia Answer: caused by inability of blood to reach the intestines due to stenosis or occlusion of the SMA, CA or IMA, postprandial abdomnal pain. QUESTION Define portal hypertension
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In the US, the most common cause of portal hypertension is Answer: cirrhosis
The Splanchnic arteries are? And where do they supply blood? Answer: Celiac artery, SMA and IMA. They supply blood to the gut.
Define chronic mesenteric ischemia Answer: caused by inability of blood to reach the intestines due to stenosis or occlusion of the SMA, CA or IMA, postprandial abdomnal pain.
Define portal hypertension Answer:
Caused by an incresed blood pressure in the portral vein usually resulting from an increased resistancee to blood flow caused by cirrhosis, trauma, previous thrombus, small portal vein radicals, hepatic parenchyma and hepatic veins.
When examining a patient with weight loss, post, prandial, pain, and an abdominal bruit, what vessel is most likely to be partly responsible Answer: SMA through CA and IMA may be involved
Patient presents with an enlarged coronary vein with retrograde flow. What is the finding? Answer: Portal, hypertension
True or false non-invasive diagnosis of renal arteries stenosis can be made by B mode images of atherosclerotic plaque Answer: False - it required a duplex system of spectrum analysis
What abdominal artery demonstrates higher, diastolic flow post prandial Answer: SMA
Is a normal spectral wave form from the hepatic veins unidirectional or bidirectional Answer: Bidirectional
Define TIPS Answer: Transjugular intrahepatic portosystemic shunt or (TIPS) is a shunt (tube) placed between the portal vein which carries blood from the intestines and intraabdominal organs to the liver and the hepatic vein which carries blood from the liver back to the vena cava and the heart.
The TIPS procedure relieves, excess pressure from what abdominal abnormality Answer: portal hypertension
What is the most common cause for impotence Answer: vascular disease
When scanning a newly transplanted kidney, you see patency in both renal artery/vein.... when scanning the intrarenal arteries there is only systolic flow. What is happening?
Answer: Absence of diastolic flow on the transplanted kidney suggests rejection.
What MHz probe range would you use for Saphenous vein mapping prior to bypass surgery? Answer: 7 - 10MHz
True or false A flow rate less than 200 mL/min is normal for a radial artery/cephalic vein dialysis fistula Answer: False A flow rate around 300ml/min is required for dialysis
What is the name for a radial artery/cephalic vein dialysis fistula Answer: Brescia-Cimino
True or false The digital brachial systolic pressure ratio, and an extremity with a dialysis fistula is about Answer:
Answer: Subclavian artery
Temporal arteritis is commonly characterized by what finding Answer: Intimal thickening
In liver transplant where is the native common hepatic artery anastomose to on the donor hepatic artery Answer: Several centimeters proximal to the hepatic hilum
The vascular disease that presents back, abdominal or flank pain is Answer: AAA
The circle of Willis receives its blood supply from which combination of arteries? Answer: carotid and vertebral arteries
Two of the major branches of the ECA include
Answer: Superficial temporal and facial arteries
What is the most common anomaly of the circle of Willis? Answer: Absence or hypoplasia of one or both of the communicating arteries
The brachial veins connect, the Answer: Ulnar and radial veins to the axillary vein
Which main in the anti-cubital fossa connects the cephalic and basilic veins Answer: Median cubital vein
The axillary artery connects, the Answer: Brachial artery to the subclavian artery
The renal arteries arise from the aorta
When listening with continuous wave Doppler over a sonic lesion, you will hear high frequency or low frequency sound? Answer: High frequency
A normal PORH response is a major velocity increase of what percent increase in mean velocity Answer:
100%
What are falsely elevated less frequently than tibial ankle pressures? Answer: toe pressures
How can a PTFE graft be identified during ultrasonographic imaging? Answer: A double-line appearance of the graft walls.
Velocities measured in a reversed saphenous bypass graft are usually _____ proximally and ______ distally
Answer: Higher Lower
The volume flow rate and a reversed saphenous vein bypass graph should be Answer: The same throughout the graft, even though the velocities may differ
With both arterial obstructive disease and distal ischemia, what happens to vessel size and distal resistance? Answer: Vasodilation opens to attempt to increase nutrive blood flow to the extremity and distal resistance decreases.
When you have a damped Doppler velocity wave form of the subclavian artery. Where would the significant lesion be located? Answer: Proximal to the point of insonation
Normal values in TcPO2 assessment are Answer: 60 - 80mmHg
Define coarctation of the aorta Answer: Coarctation of the aorta is a narrowing of the aorta, most commonly found just distal to the origin of the left subclavian artery
Define compartment syndrome Answer: a serious condition that involves increased pressure in a muscle compartment. It can lead to muscle and nerve damage and problems with blood flow.
What is digital subtraction arteriography? Answer: a method in which radiographic images of blood vessels filled with contrast material are digitized and then subtracted from images obtained before administration of the material. The method increases the contrast between the vessels and the background.
Where is the usual site for percutaneous lower extremity angiography? Answer: Common femoral artery
The common radiologic terms, inflow, outflow and runoff, refer respectively to what
Answer: Aortoiliac, femoropopliteal, trifurcation arteries
Contrast for our choreography is hard on what organ Answer: Kidneys
What condition shows up as a string of beats Answer: FMD
What is FMD? Answer: Fibromuscular dysplasia-abnormal growth of cells in the walls of arteries that can cause the vessels to narrow or bulge. The carotid arteries,are commonly affected. Arteries within the brain and kidneys can also be affected. A characteristic "string of beads" pattern caused by the alternating narrowing and enlarging of the artery can block or reduce blood flow to the brain, causing a stroke.
What is the kissing stent, angioplasty, stent, technique, useful for? Answer: bifurcations
Answer: Renal artery ratio
What is the abdominal vessel that is most commonly compromised by the median argument ligament of the diaphragm? Answer: Celiac artery
Spontaneous splenorenal renal shunt is associated with what process Answer: Portal hypertension
Define Budd Chiari syndrome. Answer: Syndrome is caused by blood clots that completely or partially block the large veins that carry blood from the liver (hepatic veins) into the inferior vena cava.
The layer of arterial or Venus wall composed entirely of endothelial cells is the Answer: Tunica intima
A venule contains which vessel layers? Answer: tunica media and tunica intima
Atherosclerosis is a disease that begins in the Answer: intima
A disease that affects primarily the intimate and may extend into the media is Answer: Atherosclerosis
In the cerebrovascular system, atherosclerosis occurs more commonly in the Answer: Carotid bulb
The NASCET use the following arterial graphic criteria to classify ICA disease Answer: Diameter, percentage stenosis calculated by dividing the minimal diameter by the diameter of the unstenosed distal ICA
The usual instrumentation for handheld TCD includes a probe with an operating frequency of: Answer: 2 MHz
Which of the following would alter the frequency shift of the ICA Doppler signal? Answer: Tapering of the vessel, from the bulb to the distal visualized segment, and increasing the transmitted frequency
The TCD window use for assessing the middle cerebral artery is? Is it towards towards or away from the beam Answer: Temporal Towards
In arterial stenosis, that is 80% by diameter reduction, corresponds to a cross-sectional area reduction of Answer: 96%
A vascular lab calls a stenosis 60-70% by diameter based on its duplex assessment, but angiography the next day calls it 90% diameter. Possible reasons for this discrepancy might include: Answer: A. The stenosis is long and smooth, changing its Doppler character compared to that of a shorter lesion. B. Only one plane of visualization was used for angiography. C. Poor angle- correction with the duplex, creating artificially low velocity estimates. D. Acoustic shadowing prevented Doppler assessment of the maximum narrowing E. Color flow PRF set to low creating alienating and overestimation of velocities E
The acoustic windows through which US may pass in performing TCD and transcranial imaging exams include all EXCEPT: Answer: The medial part of the frontal bone
Major complications of cerebrovascular angiography include all of the following, except Answer: Inadvertent venous puncture
Angiography is generally considered only when the information is necessary for surgery or other urgent. Patient management because of all of these factors, except. Answer: It is often non-diagnostic