Equipment Theory

28 Questions | Total Attempts: 94

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• 1.
Gases being composed of discrete molecules in random motion" best describes
• A.

The ideal gas law

• B.

The kinetic theory of gases

• C.

Daltons Law

• D.

Charles Law

• 2.
The Kinetic activity of gases is largely dependent upon
• A.

Their concentration

• B.

The pressure

• C.

The temperature

• D.

They type of gas

• 3.
Chambers A and B are connected by high pressure tubing and separated by a valve. If chamber A contains 500psi of gas and chamber B contains 50 psi of gas, what will occur when the valve is opened?
• A.

The pressures in the chambers will remain equal

• B.

Chamber A will be pressurized by chamber B

• C.

Gas will flow from chamber A to chamber B until pressures equalize

• D.

The pressure in chamber B will increase to a level greater than in Chamber A

• 4.
Pascals Law describes
• A.

The relationship between volume and pressure of gas

• B.

The relationship between pressure and temperature of a gas

• C.

The relationship between temperature and volume of a gas

• D.

The equal distribution of pressure transmitted by a fluid

• 5.
A device used clinically to measure small pressures is termed a:
• A.

Mercury barometer

• B.

Aneroid barometer

• C.

Manometer

• D.

Reducing valve

• 6.
A Bourdon Gauge
• A.

Uses coiled tube

• B.

Uses a sealed diaphragm

• C.

Measures pressure

• D.

Measures flow

• 7.
The Statement, "As temperature increases, pressure also increases, " best describes"
• A.

Gay-Lussac's Law

• B.

Daltons Law

• C.

Henrys Law

• D.

Charles Law

• 8.
Bernoulli's theorem best describes"
• A.

The relationship between temperature and pressure of a gas

• B.

The relationship between volume and pressure of a gas

• C.

An energy balance or conservation between velocity and pressure

• D.

The relationship between pressure of a gas and its ability to dissolve into a liquid

• 9.
An air entrainment mask operates by mixing source gas (oxygen) and room air. This device operates using:
• A.

Viscous shearing and vorticity

• B.

Bernoulli's theorem

• C.

Venturi's principle

• D.

Poiseuill'es Law

• 10.
You are analyzing the FIO2 of a patent's HAFOE device, which reads 0.85. The entrainment port is set at 40%. Why would the analyzed oxygen concentration differ so much from the setting?
• A.

The analyzer is malfunctioning

• B.

The patient's respiratory rate is affecting oxygen delivery

• C.

More room air is being entrained

• D.

There may be an obstruction distal to the entrainment port

• 11.
A gases velocity is said to be choked when:
• A.

Velocity can no longer increase

• B.

A maximum temperature is reached

• C.

Pressure is at a maximum

• D.

The concentration is at a maximum

• 12.
A patient with reactive airway disease is experiencing bronchospasm. The patient's work of breathing has dramatically increased in the last few minutes. This is an example of:
• A.

Poiseuille's Law

• B.

The Bernoulli Theorem

• C.

Increased airway resistance

• D.

Decreased lateral pressure

• 13.
The rate of gas diffusion into or out of a liquid is directly proportional to the partial pressure of the gas" best describes:
• A.

Charles Law

• B.

Ficks Law

• C.

Henry's Law

• D.

Gay-Lussacs Law

• 14.
Which of the following is constructed in a similar way to a thermos bottle?
• A.

Oxygen Cylinder

• B.

Oxygen Concentrator

• C.

Liquid Oxygen Reservoir

• D.

Oxygen Piping System

• 15.
Safety features incorporated into regulators or reducing valves include:
• A.

DISS outlet

• B.

PISS inlet

• C.

American Standard inlet

• D.

Pressure relief valves

• 16.
Which of the following is (are) true for an "H" size oxygen cylinder?
• A.

When full, it contains 2200 psi

• B.

It contains 22 cubic feet of gas

• C.

It will have "3AA" stamped on the shoulder

• D.

It contains 244 cubic feet of gas

• 17.
The marking "3AA' indicates:
• A.

The cylinder type

• B.

The contents of the cylinder

• C.

The cylinder serial number

• D.

The cylinder size

• 18.
The lightest compressed gas cylinder for ambulatory use is a (an):
• A.

3AA steel cylinder

• B.

Aluminum (3AL) cylinder

• C.

Fiber-wrapped cylinder

• D.

Portable liquid reservoir

• 19.
A device that mixes air and oxygen is termed a (an):
• A.

Concentrator

• B.

Oxygen enricher

• C.

Oxygen proportioner

• D.

Reducing valve

• 20.
When troubleshooting an oxygen concentrator, you find that the device is operating yet you are unable to obtain the desired flow of oxygen-enriched gas. Possible problems include:
• A.

A tripped circuit breaker

• B.

Obstructed delivery tubing

• C.

Obstructed humidifier

• D.

A dirty filter

• 21.
Advantages of transfixing portable cylinders from a home oxygen concentrator include:
• A.

Convenience

• B.

Cost savings

• C.

Speed of filling the cylinder

• D.

All of the above

• 22.
When making a call on a home care patient, you weigh her liquid reservoir, which registers 80lbs. You know the manufacturer's weigh to be 60lbs, and that your patient uses 3L/min oxygen. how much gas does her reservoir contain, and can she wait for 5 hours before your company's delivery truck arrives?
• A.

12,340 L oxygen remaining

• B.

5484 L oxygen remaining

• C.

30 Hours duration remaining

• D.

84 Hours duration remaining

• 23.
An advantage of using a demand pulse flow oxygen delivery system in the home care environment is that:
• A.

Less oxygen is used

• B.

It is less expensive for the patient

• C.

A humidifier is not required

• D.

None of the above

• 24.
When selecting an oxygen-conserving device for ambulatory use, it is important to:
• A.

Select the unit based on overall cost

• B.

Perform an ambulatory oxygen saturation trial using the unit

• C.

Draw arterial blood gases before and after ambulation

• D.

None of the above

• 25.
A potential disadvantage to the CAIREHELIOS system is:
• A.

It is heavier than other portable liquid reservoirs

• B.

It has a smaller capacity than competing units

• C.

It must be used with the HELIOS7 dual lumen cannula

• D.

It can only provide flow rates of put to 2 L/min

• 26.
Back pressure will affect the accuracy of which of the following flowmeters?
• A.

Compensated Thorpe Tube

• B.

Uncompensated Thorpe Tube

• C.

Bourdon flowmeter

• D.

All of the above

• 27.
A back pressure compensated flowmeter:
• A.

Reads correctly if back pressure is applied

• B.

Reads lower than the actual flow when back pressure is applied

• C.

Has the needle valve downstream from the Thorpe tube

• D.

Has the needle valve upstream from the Thorpe tube

• 28.
When using a fixed orifice flowmeter, it is important to:
• A.

Calibrate it using a calibration flowmeter

• B.

Use the correct inlet pressure

• C.

Ensure that there is no restriction in the inlet tubing

• D.

Adjust the regulator to the pressure on the label