hemodynamics Flashcards
What is the pressure as the blood moves through the capillary beds?
15mmHg
Where is oxygen delivered to the tissues and waste removed?
Capillaries
Flow is defined as ______ at any given time.
The amount of liquid moving past a point
What is the normal pressure in the left ventricle?
120mmHg
What is the most powerful component of resistance?
Radius
What is the relationship between resistance and pressure? If pressure ____, resistance _____.
Increases, increases
T/F: Non-laminar flow = flow separation
True
T/F: Most stenosis occurs at the proximal ICA near the bifurcation?
True
T/F: Typically, a stenosis must narrow the diameter of the artery by at least 25% to increase the peak systolic velocity significantly.
False, 50%
Why are platelets associated with early stages of atherosclerosis?
healing property (coagulation); repair of the damaged intima.
T/F: Coronary flow is determined by the systolic level of arterial pressure.
False
T/F: There is a small pressure drop at bifurcation of normal vessels.
True
What type of flow pattern occurs at a bifurcation and/or flow divider?
Disturbed
at what percent of diameter reduction is a stenosis termed hemodynamically significant?
50%
Turbulence can create vessel vibrations called?
Bruits
