Final Review Deck Flashcards
Monometer
Has one side connected to a fluid, the other to open air. U shaped system with the change in height equal to the change in pressure.
example Arterial Line
Aneroid Gauge:
Does not use liquid. Expansion and contraction of a bellow as pressure changes.
example: BP cuff
Bourdon Gauge:
Uses a coiled tube. As the coil relaxes, the pointer moves.
example: O2 tank
Barometer:
The change in height of a column of fluid, usually mercury, is a a direct measurement of atmospheric pressure.
Measures atmospheric pressure
Work equation for a gas
Work = Pressure x ΔV
Things that would have the greatest impedance to flow
Decreased Radius
Higher Viscosity
Longer tubing length
Laminar Flow → linear : Reynolds Number ?
Turbulent Flow → collisions : Reynolds Number ?
laminar = 2,000 or less
turbulent 3,000 or more
Buoyant Force equation
(Volume submerged/displaced) x gravity (9.8) x density of fluid
Hypertonic Solution has what amount of solute? What happens when given to a patient?
The solution has a high amount of solute. Therefore, when given to a patient, water via osmosis leaves the tissues and enters the system/vasculature to dilute the high solute concentration.
Leaving an area with a high amount of water to a low
Hypotonic solution has what amount of solute? What happens when given to a patient?
The solution has a low amount of solute. If give to patient, this will hydrate cells, water will leave solution and enter cells via osmosis. Careful, cells can burst.
If given a percentage of a gas, for example, 20% oxygen at sea level (760mmHG), how do you find the partial pressure of oxygen at sea level?
Take the percentage over 100 to get a decimal.
0.2 oxygen
and then multiply by the total pressure (760) = 153mmHG Oxygen
If given number of moles of a gas and the total pressure, how do you find the partial pressure of that gas?
Partial Pressure = Mole fraction (mols of Xgas / over total mols of gas) multiplied by the total pressure.
