35 terms

Respiratory Care- Medical gases, gas laws, states of matter,

List factors influencing states of matter
gas laws.Pressue, volume, temperature
Boyles, Charles, Gay Lussac, and Dalton
What is melting point?
When a solid turns into a liquid
What is boiling point?
When a liguid turns into a gas
(212 F, 100 C, 373 K)
What is sublimation?
Solid skips the liquid phase and go into the a gas stage
What is evaporation
Liquid goes to a gas
What is Water Vapor
a measure of forces exerted when molecules hit surface and escape (true humidity)
What is Critical Pressure
The pressure need ti change a gas to liquid
(H2O-218 atm CP)
What is critical temperature
Gas that cannot be change back into a liquid
For Oxygen:
-118.8 C
-181 F
49.7 Atm
Describe how gas pressures are measured
You measure the tension and pressure that exerts
Force/Unit Area= Pressure (Pascal) Increase altitudes decrease pressure (Barometer)
Describe what effects gas pressures:
Daltons Law
P1+P2+P3=(Total Pressure)Pt
List the component gases in the atm
what color is oxgyen tank in US?
Green Cylinder (white international)
What are some characteristics of Oxygen?
no color, odorless, no taste
Slightly paramagnetic
Supports combustion
What color is nitrogen tank and characteristics?
Tank Color is Black
No odor, no color, no taste
Will no burn or support combustion
inert in the lungs
can be used for powering surgical instruments
What color is CO2 and characteristics
tank color is gray
Pungent odor
tastes like vinegar
will not burn
used for respiratory stimulant, vasodilator
What color is helium and characteristics
tank color is brown
will not burn or support combustion
Used for: pulmonary fuction test
and to deliver inhaled drugs
What color tank is air and some characteristics
No color, taste, odorless
supports combustion (has 21% O2)
What color tank is Helium/Oxygen and characteristics
brown/green - 80/20
No color, taste, odor
supports combustion because of the O2
What color tank is Ethylene
What is the medical gas used for dental work (laughing gas) and what color is the tank and characteristics
nitrous oxide
Color tank: light blue
sweetish taster
supports combustion
analgestic agent (relieve pain)
What color tank is cycloproprane
What is boyles law and what type of relationship does it have
Inverse relationship
example: Breathing
What type of relationship is Daltons Law
Direct relationship
What is Guy-Lussac Law and what type of relationship
Direct relationship
Example: Liquid oxygen turning into a gas-passive pressure , boiling water with a lid
What is Charles Law and what type of relationship
Direect relationship
Example: hot air balloon
What is ficks law of diffusion?
A- surface area
D- contants of diffusion
P1-P2: pressure gradient
T- membrane thickness
how does gas flow?
From high pressure to low pressure
What is the Alveolar Air Equation?
PAO2=(PB-PH2O) x FiO2) - (PCO2 x 1.25)
What is the formula to convert F to C
F(9/5 x C) + 32
Rule of thumb F should always be bigger than C
What is the formula to convert K to C
What is the formula to convert C to F
C=5/9 (F-32)
What factors affect diffusion and give an example of each
membrane thickness-fluid/mucus
Surface area-atelectasis
pressure gradient- BP
What does it mean when an object has potential energy
energy position or stored energy
What is kinetic energy
energy of motion.
What medical gas are non-flammable
Carbon Dioxide