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Vascular ultrasound exam 1 Questions with Correct Answers
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Vascular ultrasound exam 1 Questions with Correct Answers
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Vascular ultrasound exam 1 Questions with CorrectAnswers
Anatomy of Arterial wall Correct Answer-Tunica intima(blood flow
Tunitca media(muscular holds together)
Tunica externa(aventitia)(extends&contracts)
stoke volume Correct Answer-the amount of blood entering the aorta
with each ventricular contraction
Windkessel effect Correct Answer-The expansion and contraction of
compliant vessels. In the aorta the vessel expands and increases the
volume within it, then when the pressure is reduced, the vessel is able to
contract to push the remaining blood forward. No backward flow is
allowed due to valves.
Blood flows Correct Answer-Laminar
Disturbed
Turbulent
Plug
laminar flow Correct Answer-Parabolic
Bullet
Layered
Normal
, turbulent blood flow Correct Answer-type of blood flow resulting in
audible sound; defined by chaotic flow due to variations of pressure and
velocity
Bernoulli's Principle Correct Answer-as the velocity of a fluid increases,
the pressure exerted by the fluid decreases
Poiseville's Law Correct Answer-resistance to air flow (R) is
proportional to diameter of a tube raised to the fourth power
R=d^4
Doppler angle Correct Answer-The angle between the sound beam and
the flow direction 45-60
spectral broadening Correct Answer-the filling of the spectral window
Circle of Willis Correct Answer-a circulatory anastomosis that supplies
blood to the brain and surrounding structures
What percent has circle of Willis? Correct Answer-50%
How to open vessel Correct Answer-Rotating and angle
transtemporal approach Correct Answer-Circle of willis
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