Gas Therapy

Question 1

Cylinder color Brown/Green

Answer 1

Heliox

Must always be mixed with at least 20% oxygen.

Question 2

Applications for heliox

Answer 2

Partial (large) airway obstruction.

Question 3

Delivery device for heliox

Answer 3

Non-rebreathing mask

Question 4

How do you get the actual flow rate for 70:30 He/O2

Answer 4

Multiply the flowmeter setting by1.6

Question 5

How to get the actual flow rate for 80/20 He/O2

Answer 5

Multiply the flowmeter setting by 1.8

Question 6

Manufacture of oxygen

Answer 6

Fractional distillation.

Question 7

Cylinder color code for oxygen

Answer 7

Green (international = white)

Question 8

Medical air cylinder color code

Answer 8

Yellow

Question 9

Carbon dioxide cylinder color code

Answer 9

Gray/green

Question 10

Nitrous oxide cylinder color code

Answer 10

Light blue

Question 11

FDA is responsible for

Answer 11

Labeling of medical gases.

(Gas contents, purity level, flammability hazards, manufacturer name)
* is the only way to correctly identify contents of cylinder

Question 12

DOT or ICC regulatory agency is responsible for

Answer 12

Seamless steel tested every 10 years

Question 13

What does a star indicate on cylinder

Answer 13

That it is good for 10 years

Question 14

How much gas can an E cylinder hold

Answer 14

22 cu. ft. Of O2

Question 15

How much can an H cylinder hold

Answer 15

244 cu. ft. Of O2

Question 16

What is the PISS system

Answer 16

Cylinders have varying pin locations, high-pressure relief valves,

Always make sure washer is present.

Question 17

What does the ASSS system do

Answer 17

Differs thread pitches, internal left and right hand threads and external threading

Question 18

Diameter index safety system

DISS

Answer 18

Designed to prevent accidental connections of low pressure (<200 psi) medical gases

Question 19

Duration of gas flow from cylinders equation

How many liters are in 1 cu. ft.

Answer 19

Duration (minutes)= cylinder factor (L/psig) x gauge pressure/ flow rate (lpm)

28.3 liters in.1 cu. ft.

Question 20

What is the gauge pressure when cylinder is full?

Answer 20

2200 psig

Question 21

Duration of liquid oxygen container equation

1 liter of liquid gas = 2.5 lbs = 860 L of gaseous gas

Answer 21

Amount of gas = weight of cylinder x 860 / 2.5 pounds

Question 22

What does the reducing valve reduce gas pressure to?

Answer 22

50 psi

Question 23

Thorpe tube flowmeter trouble shooting

If a massive leak occurs after removing flowmeter from wall what should you do?

Answer 23

Plug it back into wall

Question 24

Thorpe tube flowmeter trouble shooting

If you notice continuous bubbling in humidifier with the needle valve closed

Answer 24

The valve seat is worn, replace the flowmeter .