Flow of Fluid
This is a measure of volume per time
Flow (Volume Flow Rate)
This type of blood flow is pulsatile and seen with cardiac contractions
Pulsatile Flow
The velocity of blood flow increases or decreases as the vessel narrows.
Velocity increases
What is the hydrostatic pressure at the level of the ankle in a supine patient?
0mmHg
This energy loss is due to the thickness of blood
Viscous Loss
If you can hear it?
Bruit
This shows a thin line of RBC's traveling at or near the same speed. This is the normal physiological state of blood.
Laminar Spectral Tracing
This is a measure of distance per time and direction
Velocity
This type of blood flow accelerates and decelerates with respiration.
Phasic Flow
Where will turbulence been seen?
After a stenosis
What is the hydrostatic pressure at the level of the heart in a standing patient?
0mmHg
This energy loss is converted into heat as one object rubs against another (blood sliding across vessel walls)
Frictional Loss
If you can feel it?
Thrill
This shows a line that is filled in as there are blood cells traveling at all different speeds in different directions
Turbulent Spectral Tracing
This is the resistance of a fluid to flow
Viscosity
This type of blood flow is like water flowing through a garden hose - see most often with the portal vein
Steady Flow
When is pressure energy higher and kinetic energy lower?
Before a stenosis
What is the hydrostatic pressure in a standing patient at the level of the ankle?
100mmHg
This energy loss relates to the tendency of a fluid to resist changes in its velocity
Inertial Loss
This number indicates Laminar Flow
Less than 1500
If your patient has polycythemia, will their blood be more or less resistant to flow?
More resistant
This type of laminar blood flow is:
Parallell, Straight, Same speed
Plug Flow
When is pressure energy converted to kinetic energy?
Within the stenosis
This number indicates Turbulent Flow
Over 2000
What is the driving force behind fluid flow?
Pressure
This type of laminar flow is:
Parallel, straight, different speeds
Parabolic Flow
Bernoulli's Principle tells us that in a stenosis...
Pressure is the lowest
Velocity is the highest
Flow flows from what to what?
High pressure to low pressure
High resistance to low resistance
This type of laminar flow is:
Parallel, Not Straight, same or different speeds
Disturbed Flow
in regard to a stenosis, when is the pressure higher and kinetic energy lower?
Before a stenosis
This type of blood flow is:
Chaotic, has eddies & vortices, Different speeds, seen after a stenosis
Turbulent Flow