Properties of Medical Gases
What is the oxygen concentration of medical air?
What does the cylinder classification tell you?
Type of metal it is made from.
-3A (carbon steel)
- 3AA (steel alloy)
- 3ALM (aluminum)
What safety index connection system is used for large cylinders and attachments?
ASSS
American Standard Safety System (threaded connection)
To deliver a precise amount of oxygen (fiO2).
This method of O2 production separates the gases at different boiling points.
What does the + sign on an O2 cylinder mean?
Approved for 10% filling over service pressure.
What safety system connection is commonly used to deliver gas at a low flow?
DISS (low pressure, threaded)
Diameter-Index Safety System
What type of O2 analyzer is self-powered and uses a fuel cell to read the amount of oxygen?
Galvanic
This gas is less dense than air and is used for patient's with upper airway obstruction.
Helium (Heliox)
High cylinder pressure must be lowered to 50psi, how is the accomplished?
Reducing Valves
Preset, Adjustable, Multi-stage
How is a quick connect gas outlet system classified?
DISS
Diameter-Index Safety System
This medical gas is a selective pulmonary vasodilator and used to treat pulmonary hypertension.
Nitric Oxide
What organization regulates the storage & transportation of compressed gas cylinders?
NFPA
National Fire Protection Association
This type of regulator operates under variable pressures.
Bourdon Gauge
What makes the polarographic analyzer give a rapid and accurate response?
External Power (speeds up the chemical reaction)
I cubic foot of gas is equal to how many Liters of gas?
~ 28.3 Liters
What type of pressure relief valve is commonly used with size E cylinders?
Fusible Plug
The plug melts at a specific temperature.
In a pressure compensated Thorpe tube, where is the needle valve located?
After or Distal to the flow tube.
What do electrochemical analyzers actually measure?
Partial Pressure of Gas