Res 122 Test 1

Front 1

Cylinders of liquid gases are filled according to what specification?

Back 1

A. Filling density

Front 2

Under what conditions will the gauge pressure of a cylinder of N2O accurately represents its contents?
I. When the liquid in the cylinder has completely vaporized.
II. When the ambient temperature exceeds the critical temperature.
III. When the filling density is less than 1.0 (water-filled).

Back 2

C. II only

Front 3

According to the National Institute of Standards and Technology of the U.S. Department of Commerce, a gas cylinder that is color-coded brown and green should contain which of the following?

Back 3

D. O2-He mixture

Front 4

Which of the following is true about an uncompensated Thorpe tube?

Back 4

A. Flow lower than actual if downstream pressure increases

Front 5

When used to control the flow of medical gases to a patient, how is a flow restrictor classified?

Back 5

D. Fixed orifice, constant-pressure flowmetering device

Front 6

If you had to power a ventilator from a large cylinder of compressed gas, which of the following devices would be required?

Back 6

C. Reducing valve

Front 7

After attaching a yoke connector to an E cylinder and opening the cylinder valve, you notice a leak at the gas outlet. Which of the following are possible causes of this leak?
I. The gas outlet bushing is missing or damaged.
II. The yoke hand screw is not tight enough.
III. Some PISS pins are missing.

Back 7

A. I and II

Front 8

You are called by a nursing home to help set up O2 for a patient, delivered through a jet nebulizer. Unfortunately, all that is available is an old uncompensated Thorpe tube flowmeter. When set to 8 L/min, the nebulizer creates an additional 30 psig of downstream pressure. About what flow of O2 will the patient now receive?

Back 8

D. 12 L/min

Front 9

Which of the following statements is false about PISS standards?

Back 9

A. They apply to low-pressure (<200 psig) connections.

Front 10

Department of Transportation (DOT) regulations require compressed gas cylinders to be hydrostatically tested for leaks and expansion every how often?

Back 10

D. 5 to 10 years

Front 11

What key property of He makes it useful as a therapeutic gas?

Back 11

D. Low density

Front 12

What is the PISS index hole position for O2?

Back 12

B. 2 and 5

Front 13

Which of the following is false about a Bourdon gauge?

Back 13

D. It will register zero flow when the outlet is completely blocked.

Front 14

Compressed gas cylinders are manufactured from which of the following?

Back 14

B. Seamless steel

Front 15

When used to control the flow of medical gases to a patient, how is a Thorpe tube classified?

Back 15

A. Variable orifice, constant-pressure flowmetering device

Front 16

Which of the following methods of producing O2 is commonly used in the home care setting?

Back 16

D. Physical separation

Front 17

When full, a gas cylinder registers a pressure of 2200 psig. After a few hours of use, the pressure gauge reads 550 psig. The cylinder is now how full?

Back 17

C. 1/4

Front 18

Structural requirements for the central piping systems that are used in hospitals to distribute gases are established by whom?

Back 18

C. NFPA

Front 19

To what is the measured pressure in a gas-filled cylinder equivalent?

Back 19

D. The force required to compress its volume within the cylinder.

Front 20

According to the U.S. Department of Commerce, a gas cylinder that is color coded blue should contain which of the following?

Back 20

C. N2O

Front 21

One cu/ft of liquid O2 is the equivalent of about how many cu/ft of gaseous O2?

Back 21

D. 860

Front 22

Which of the following medical gases can be stored in cylinders as liquids at room temperature?
I. CO2
II. O2
III. N2O

Back 22

C. I and III only

Front 23

Unlike CO2 or N2O, O2 cannot be stored as a liquid at room temperature but must be kept in special cryogenic containers. Why is this so?

Back 23

B. O2 has a critical temperature well below room temperature.

Front 24

What cylinder factor is used to compute the duration of flow for a 22 cu/ft O2 or air E cylinder?

Back 24

A. 0.28

Front 25

Which of the following components are common to a standard compressed gas cylinder manifold system?
I. Automatic switch-over control
II Pressure-reducing valves
III. Primary and reserve bank
IV. Alarm system

Back 25

D. I, II, III, and IV