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DVT423-AR2

USIDMS LE Arterial Doppler

QuestionAnswer
Which type of flow has higher velocities mid-stream and lower velocities toward the vessel wall? laminar flow
According to the Bernoulli's Principle, what happens to the velocity as the diameter of the vessel decreases? the velocity will increase with a decrease in diameter
Let's say your patient is a diabetic and the PTAs and dorsalis pedis are difficult to hear on doppler. What lateral calf artery can you Doppler instead? the peroneal artery
True or false. When resting, the arteries in the leg should be triphasic. true
When exercising, what happens to the arterial flow in the legs? It becomes more continuous and low resistant compared to the triphasic flow when resting. Vasodilation occurs to pool more blood to the legs.
True or false. A reason for a venous LE study to be done is if the patient is experiencing intermittent leg pain while walking. false; that is an arterial symptom
Analog Doppler cannot detect velocities less than ____ cm/sec. six
Does triphasic flow have a high or low PI? high
Describe the waveform of a monophasic signal distal to an obstruction. tardus parvus, continuous, low velocities, slow AT
True or false. When doing segmental pressures, which level/location of the cuffs should be inflated first on the legs? the ankles
Created by: ambuente