Quiz 8 Vascular

How often should you compress the veins when evaluating for the presence of thrombus? 1 to 2 cm 2 to 3 cm 3 to 4 cm Dependent on the patient's body habitus

1-2 cm

Color Doppler is used for which of the following? To document areas of narrowing associated with stenosis To determine and document vessel occlusion Identify trickle flow All of the these

All of these

Which of the following conditions can affect the spectral waveform during a carotid ultrasound exam? Anemia Abnormal blood pressure Low cardiac output All of these

All of these

The common iliacs converge to form the inferior vena cava. external iliacs. greater saphenous vein. femoral veins.

Inferior vena cava

What is the first branch of the aortic arch? Right brachiocephalic artery Right vertebral artery Left common carotid artery Left subclavian

Right Brachiocephalic artery

Which of the following is not characteristic of the Doppler spectral waveform from the normal common carotid artery? Rapid systolic deceleration Systolic window Spectral broadening Constant forward diastolic flow

Spectral Broadening

Which of the following statements is false? Reproducibility and accuracy of velocity measurements is dependent upon sample volume size and placement. Velocity measurements should be obtained from the areas proximal and distal to the stenosis. The sample volume size should be ½ of the vessel diameter and place within the fastest blood flow jet. The angle correction cursor should be parallel to the vessel wall with a 60 degree or less angle of insonation.

The sample volume size should be 1/2 of the vessel diameter and place within the fastest blood flow jet.

Which statement is false about the peripheral veins? They can undergo remarkable volume changes with little change in transmural pressure. The percentage of smooth muscle found in the walls of veins varies with their location. The venous wall is only half as thick as the arterial wall and is composed primarily of elastin fibers. The venous pressure in the feet of an exercising adult usually is less than 25 mm Hg.

The venous wall is only half as thick as the arterial wall and is composed primarily of elastin fibers.

Duplication commonly is associated with all these veins except the popliteal vein. common iliac vein. greater saphenous vein. femoral vein.

common iliac vein

The vertebral artery flow patterns will be most similar to those of the common carotid artery. internal carotid artery. external carotid artery. subclavian artery.

internal carotid artery

Which of the following is NOT a branch of the internal carotid artery? Middle cerebral artery Posterior cerebral artery Anterior cerebral artery Ophthalmic artery

posterior cerebral artery

Which is NOT considered a normal Doppler spectral flow pattern found in the peripheral venous system? Spontaneous flow Phasicity Antegrade flow Pulsatile flow in the lower extremities

pulsatile flow in the extremities

Hydrostatic pressure increases the distance below the reference point increases. the distance above the reference point increase. if the limb is elevated. when the patient is supine.

the distance below the reference point increases

The superficial veins do not have a companion artery like the veins in the deep system. True False

true

Valves in the deep veins prevent blood from flowing toward the feet. True False

true