Medical Gases
Pressure
Safety Systems and Oxygen Concentrators
Cylinder Duration
Random
100

This gas has the colour code blue.

What is nitrous oxide (entonox)?

100

The difference between PSIA and PSIG.

What is 1 ATM?

100

This safety system is the one used on wall outlets.

What is Diameter Index Safety System (DISS)?

100

These are the safety cylinder factors in E and H sized cylinders.

What is the 300 psig in E and 500 psig in H?

100

FiO2 stands for

What is fractional inspired oxygen.

200

This gas has the colour code brown.

What is helium?

200

This is pressure at 1 ATM in psi, cmH2O, and mmHg.

What is 14.7 psi, 1034 cmH2O, 760 mmHg?

200

This safety system is used on cylinders larger than E and is a thread based system.

American Standard Safety System (ASSS)

200

These are the cylinder factors for E and H sized cylinders.

What are 0.28 and 3.14?

200

This is the boiling point of oxygen.

What is -183?

300

These are the medical gases commonly used in hospitals.

What are oxygen, helium (heliox), nitrous oxide (entonox), air, and nitrogen?

300

This is a device that measures pressure in mmHg.

What is a mercury barometer?

300

This is a safety device that ruptures when there is too much pressure in a cylinder.

What is a frangible disk?

300

This is the formula to calculate a cylinder factor.

What is volume of cylinder/pressure in cylinder?

300

These two gases are often a mixture of liquid and vapour.

What is nitrous oxide and carbon dioxide?

400

This gas is used clinically as an anesthetic agent.

What is nitrous oxide?

400

This is the critical pressure for oxygen.

What is 49.3 atm?

400

This oxygen concentrator uses filterde, compressed room air that passes through a heat exchanger.

What is a molecular sieve?

400

This is the formula to calculate the duration of an E sized cylinder.

What is ((cylinder pressure - 500 psig) x 0.28L/psig ) / (gas flow)?

400

This is the actual flow of a thorpe tube meter set at 10 L/min of 70% Helium and 30% Oxygen.

What is the solution to clue 5.4?

500

This gas may be used clinically to manage severe cases of airway obstruction.

What is heliox (He/O2)?

500

Back pressure on a bourdon gauge will result in a ___ actual flow than indicated flow.

What is lower/decreased?

500

An uncommmon oxygen concentrator that only has ~40% oxygen output.

What is membrane concentrator?

500

The cylinder duration if there is a flow of 10 L/min and 1800 psig left in an E sized cylinder.

What is 36.4 min?

500

This is the fraction of oxygen/air required when blending to get 40% O2.

What is 1/3?