CCI Flashcards
Which deep veins are usually paired with another vein?
brachial vein
As blood flows through a stenosis, which of the following observations is most likely?
A. Kinetic energy is decreased
B. Increased velocities are evident
C. Laminar flow is preserved
D. Overall blood flow remains stable
Increased velocities are evident
What is transmural pressure (P)?
it is a measurement of the difference between the intraluminal pressure and the interstitial pressure.
A venous duplex study provides important information to help determine if venous ablation would be a viable treatment option for venous reflux. Which of the following factors is least important for a successful outcome?
A. duration of reflux
B. presence of venous stasis changes
c. caliber and depth of the vein
d. course of the vessel
presence of venous stasis changes
A patient complains of aphasia, left hemiplegia with facial and arm weakness instead of (or more severe than) leg weakness, and behavioral changes. You suspect a blockage in which artery?
Right middle cerebral artery
Angiography reveals a stenotic right internal carotid artery with a residual lumen of 3 mm. If the true lumen is 9 mm, the diameter reduction is:
67%
Correct answer.
diameter reduction:
(true lumen - residual lumen)/true lumen
then multiply the solution of the above equation by 100.
i.e. 9-3/9 = .67, .67 x 100 = 67%
. For duplex scanning, the criterion for determining a >50% diameter reduction of the femoral artery is:
Ratio of stenotic to pre stenotic PSV > 2:1
Which of the following situations is least likely to result in a continuous wave venous Doppler exam that is falsely positive?
A. Presence of bifid deep veins
B. Severe peripheral arterial occlusive disease
C. Obesity
D. Patient positioning
Presence of bifid deep veins
The antecubital fossa is a triangular region located where in the body?
Anterior to and below the elbow
Which of these statements is correct about primary Raynaud’s phenomenon?
A. It relates to vasodilation of a healthy vessel.
B. It can be the first manifestation of thromboangiitis obliterans
C. It results from ischemia caused by distal arterial spasm.
D. It is often evident after an acute arterial occlusion.
It results from ischemia caused by distal arterial spasm.
What are the three branches of the aortic arch?
Left common carotid, left subclavian, innominate
Which of the following vessels is not a branch of the ophthalmic artery that exits the orbit?
A. Frontal artery
B. Supraorbital artery
C. lnfraorbital artery
D. Nasal artery
lnfraorbital artery
In a Doppler segmental pressure exam utilizing the three-cuff system, a patient’s highest brachial systolic pressure is 168 mmHg. In the asymptomatic extremity of this patient, the thigh pressure would most likely be:
A. 140 mmHg
B. 170 mmHg
C. 200 mmHg
D. 110 mmHg
170 mmHg
A patient is suspected of having a pseudoaneurysm following a catheter based procedure. Which of the following findings on a duplex scan is the most important in confirming the presence of that complication?
A. To-and-fro flow in the communication between the suspected pseudoaneurysm and the native vessel
B. A well-defined, anechoic mass in the groin
C. A high-velocity, pulsatile flow pattern documented in the adjacent vein
D. A low-velocity, continuous flow pattern evident just distal to the area of interest
To-and-fro flow in the communication between the suspected pseudoaneurysm and the native vessel
The most common sequela of deep venous thrombosis is:
Valvular destruction
A 32-year-old female, 8 months pregnant, presents to the diagnostic facility for a venous evaluation to rule out acute deep venous thrombosis of her left lower extremity. Of the following considerations, which is the most important to ensure that the study will provide the most accurate diagnostic information?
A. Utilizing the lowest-frequency transducer available (e.g., 3 MHz) to provide adequate penetration for evaluating the femoral vein
B. Having the patient go to the bathroom to increase comfort and decrease extrinsic compression on the deep venous system
C. Informing the referring physician that the study is technically impossible because of the changes in venous hemodynamics secondary to the pregnancy
D. Situating the patient in an exaggerated left lateral decubitus position to decrease extrinsic compression on the inferior vena cava
Situating the patient in an exaggerated left lateral decubitus position to decrease extrinsic compression on the inferior vena cava
One cause of a right hemispheric infarction is:
A. Stenosis of the right external carotid artery (ECA)
B. Occlusion of the right internal carotid artery (ICA)
C. Occlusion of the left ICA
D. Stenosis of the left ECA
Occlusion of the right internal carotid artery (ICA)
Your patient complains of crampy, dull abdominal pain soon after meals. If a noninvasive vascular test were ordered, which of the following vessels would be evaluated?
A. Superior mesenteric artery
B. Hepatic artery
C. Gastric artery
D. Hypogastric artery
Superior mesenteric artery
Use the following lab findings to calculate the right ankle/brachial index (ABI): right brachial pressure = 170 mmHg, left brachial pressure = 120 mmHg, right ankle pressure = 100 mmHg and left ankle pressure = 80 mmHg. The right ABI is:
0.58
A 75% area reduction equates to a diameter reduction of:
50%
Based on the Society of Radiologists in Ultrasound consensus Conference of 2003, what is the criterion for a 70%-99% diameter reduction?
PSV > 230, EDV > 100, and/or ICA/CCA ratio > 4.0
Which of the following statements about the portal vein is true?
A.The vessel is formed by the confluence of the hepatic vein and the splenic vein.
B. Flow is heptopetal.
C. Flow is bidirectional.
D. The vessel carries approximately half of what the hepatic artery carries into the liver.
Flow is heptopetal.
Air plethysmography (APG) is able to measure how well the calf-muscle pump functions - i.e., calculate the ejection fraction. What is considered a normal ejection fraction?
Greater than 60%
A secondary form of high blood pressure is often caused by a renal artery stenosis. When blood flow to the kidney is reduced, the kidney usually responds by producing which of the following:
Renin
