Question 1

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

Accepted Answer

A)  Variable-orifice, constant-pressure flowmeter device 
B)  Fixed-orifice, constant-pressure flowmeter device 
C)  Variable-orifice, variable-pressure flowmeter device 
D)  Fixed-orifice, variable-pressure flowmeter device 
A)  Variable-orifice, constant-pressure flowmeter device 
B)  Fixed-orifice, constant-pressure flowmeter device 
C)  Variable-orifice, variable-pressure flowmeter device 
D)  Fixed-orifice, variable-pressure flowmeter device

Question 2

Which of the following are considered therapeutic gases?
1) Oxygen (O2)
2) O2-NO mixture
3) O2-He mixture
4) N2O

Accepted Answer

A) 1 and 2 only 
B) 2 and 4 only 
C) 3 and 4 only 
D) 1, 2, and 3 only 
A) 1 and 2 only 
B) 2 and 4 only 
C) 3 and 4 only 
D) 1, 2, and 3 only

Question 3

The pressure of O2 or air in a bulk supply system is reduced to what standard working pressure?

Accepted Answer

A)  10 psig 
B)  14 psig 
C)  25 psig 
D)  50 psig 
A)  10 psig 
B)  14 psig 
C)  25 psig 
D)  50 psig

Question 4

The measured pressure in a liquid-filled cylinder is equivalent to which of the following?

Accepted Answer

A)  The force necessary to compress its volume within the cylinder 
B)  Its filling density divided by the cylinder gas factor 
C)  The pressure of the surface vapor at any given temperature 
D)  The weight of the liquid divided by the density of water 
A)  The force necessary to compress its volume within the cylinder 
B)  Its filling density divided by the cylinder gas factor 
C)  The pressure of the surface vapor at any given temperature 
D)  The weight of the liquid divided by the density of water

Question 5

What is the fire-risk classification of both N and CO2?

Accepted Answer

A)  Flammable 
B)  Supports combustion 
C)  Inflammable 
D)  Nonflammable 
A)  Flammable 
B)  Supports combustion 
C)  Inflammable 
D)  Nonflammable

Question 6

What is the U.S. Food and Drug Administration (FDA) purity standard for O2?

Accepted Answer

A)  21% 
B)  90% 
C)  95% 
D)  99% 
A)  21% 
B)  90% 
C)  95% 
D)  99%

Question 7

Which of the following are true about ASSS standards?
1) They provide specifications for more than 60 gases and mixtures.
2) They apply only to cylinders sizes F through H/K.
3) They apply to high-pressure connections.
4) They provide a separate connector for all gases.

Accepted Answer

A) 1 and 3 only 
B) 1, 2, and 3 only 
C) 3 and 4 only 
D) 2, 3, and 4 only 
A) 1 and 3 only 
B) 1, 2, and 3 only 
C) 3 and 4 only 
D) 2, 3, and 4 only

Question 8

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

Accepted Answer

A)  American National Standards Institute (ANSI) 
B)  Department of Transportation 
C)  National Fire Protection Association (NFP
A)  
D)  Compressed Gas Association (CG
A)  
A)  American National Standards Institute (ANSI) 
B)  Department of Transportation 
C)  National Fire Protection Association (NFP
A)  
D)  Compressed Gas Association (CG
A)

Question 9

The gauge on an H cylinder of O2 reads 2000 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 6 L/min?

Accepted Answer

A)  1 hr 30 min 
B)  17 hr 30 min 
C)  18 hr 10 min 
D)  21 hr 50 min 
A)  1 hr 30 min 
B)  17 hr 30 min 
C)  18 hr 10 min 
D)  21 hr 50 min

Question 10

Which of the following is false about a compensated Thorpe tube?

Accepted Answer

A)  Variable-orifice, constant-pressure flowmeter device 
B)  Calibrated in liters per minute at atmospheric pressure 
C)  Flow-control needle valve placed distal to the flow tube 
D)  Accuracy unaffected by changes in downstream resistance 
A)  Variable-orifice, constant-pressure flowmeter device 
B)  Calibrated in liters per minute at atmospheric pressure 
C)  Flow-control needle valve placed distal to the flow tube 
D)  Accuracy unaffected by changes in downstream resistance

Question 11

Which of the following statements is FALSE about PISS standards?

Accepted Answer

A)  The exact positions of pins and pinholes do not vary for each gas. 
B)  In order to work, the yoke nipple has to seat in the recessed valve outlet. 
C)  They apply only to cylinders using a yoke connection. 
D)  They have six pin positions and 10 possible pin/hole combinations. 
A)  The exact positions of pins and pinholes do not vary for each gas. 
B)  In order to work, the yoke nipple has to seat in the recessed valve outlet. 
C)  They apply only to cylinders using a yoke connection. 
D)  They have six pin positions and 10 possible pin/hole combinations.

Question 12

The measured pressure in a gas-filled cylinder is equivalent to which of the following?

Accepted Answer

A)  Its filling density divided by the cylinder gas factor. 
B)  Gas temperature times its coefficient of expansion. 
C)  Gas density divided by the density of air at standard temperature, standard pressure, dry (STP
D) . 
D)  The force required to compress its volume within the cylinder. 
A)  Its filling density divided by the cylinder gas factor. 
B)  Gas temperature times its coefficient of expansion. 
C)  Gas density divided by the density of air at standard temperature, standard pressure, dry (STP
D) . 
D)  The force required to compress its volume within the cylinder.

Question 13

When using a Bourdon gauge against high outflow resistance, what will the flowmeter reading show?

Accepted Answer

A)  Exceed actual flow 
B)  Be less than actual flow 
C)  Equal actual flow 
D)  Equal 50 psig 
A)  Exceed actual flow 
B)  Be less than actual flow 
C)  Equal actual flow 
D)  Equal 50 psig

Question 14

Components of a large medical air compressor include which of the following?
1) Drying system
2) Diaphragm or turbine
3) Reservoir tank
4) Pressure-reducing valve

Accepted Answer

A) 2 and 3 only 
B) 2 and 4 only 
C) 1, 2, and 3 only 
D) 1, 3, and 4 only 
A) 2 and 3 only 
B) 2 and 4 only 
C) 1, 2, and 3 only 
D) 1, 3, and 4 only

Question 15

What is the only major factor limiting the use of pressure-compensated Thorpe tube flowmeters?

Accepted Answer

A)  Downstream resistance 
B)  Effect of position (gravity) 
C)  DISS connector availability 
D)  Use with gases other than O2 
A)  Downstream resistance 
B)  Effect of position (gravity) 
C)  DISS connector availability 
D)  Use with gases other than O2

Question 16

What is the greatest potential problem with quick-connect DISS systems?

Accepted Answer

A)  Increased cost of flowmeter equipment 
B)  Decreased accuracy in flowmeter equipment 
C)  Difficulty in training new personnel 
D)  Incompatibility among different manufacturers 
A)  Increased cost of flowmeter equipment 
B)  Decreased accuracy in flowmeter equipment 
C)  Difficulty in training new personnel 
D)  Incompatibility among different manufacturers

Question 17

Which of the following medical gases support combustion?
1) O2
2) N2O
3) Compressed air
4) CO2

Accepted Answer

A) 1 and 4 only 
B) 2 and 3 only 
C) 1, 2, and 3 only 
D) 1, 3, and 4 only 
A) 1 and 4 only 
B) 2 and 3 only 
C) 1, 2, and 3 only 
D) 1, 3, and 4 only

Question 18

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

Accepted Answer

A)  Air 
B)  He 
C)  N2O 
D)  O2 
A)  Air 
B)  He 
C)  N2O 
D)  O2

Question 19

During inspection of the shoulder of a compressed gas cylinder, you note a plus sign (+) next to the test date. This indicates what about the cylinder?

Accepted Answer

A)  It is made of spun aluminum, not steel. 
B)  It only requires a 10-year DOT inspection. 
C)  It can be filled to 10% above its service pressure. 
D)  It has a high coefficient of elastic expansion. 
A)  It is made of spun aluminum, not steel. 
B)  It only requires a 10-year DOT inspection. 
C)  It can be filled to 10% above its service pressure. 
D)  It has a high coefficient of elastic expansion.

Question 20

Which of the following statements about He is false?

Accepted Answer

A)  It is an inert gas. 
B)  It is odorless. 
C)  It is nonflammable. 
D)  It is heavier than air. 
A)  It is an inert gas. 
B)  It is odorless. 
C)  It is nonflammable. 
D)  It is heavier than air.

Exam 40: Storage and Delivery of Medical Gases

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

Which of the following are considered therapeutic gases? 1) Oxygen (O2) 2) O2-NO mixture 3) O2-He mixture 4) N2O

The pressure of O2 or air in a bulk supply system is reduced to what standard working pressure?

The measured pressure in a liquid-filled cylinder is equivalent to which of the following?

What is the fire-risk classification of both N and CO2?

What is the U.S. Food and Drug Administration (FDA) purity standard for O2?

Which of the following are true about ASSS standards? 1) They provide specifications for more than 60 gases and mixtures. 2) They apply only to cylinders sizes F through H/K. 3) They apply to high-pressure connections. 4) They provide a separate connector for all gases.

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

The gauge on an H cylinder of O2 reads 2000 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 6 L/min?

Which of the following is false about a compensated Thorpe tube?

Which of the following statements is FALSE about PISS standards?

The measured pressure in a gas-filled cylinder is equivalent to which of the following?

When using a Bourdon gauge against high outflow resistance, what will the flowmeter reading show?

Components of a large medical air compressor include which of the following? 1) Drying system 2) Diaphragm or turbine 3) Reservoir tank 4) Pressure-reducing valve

What is the only major factor limiting the use of pressure-compensated Thorpe tube flowmeters?

What is the greatest potential problem with quick-connect DISS systems?

Which of the following medical gases support combustion? 1) O2 2) N2O 3) Compressed air 4) CO2

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

During inspection of the shoulder of a compressed gas cylinder, you note a plus sign (+) next to the test date. This indicates what about the cylinder?

Which of the following statements about He is false?

History of Respiratory Care

Delivering Evidence-Based Respiratory Care

Quality, Patient Safety, and Communication, and Recordkeeping

Principles of Infection Prevention and Control

Ethical and Legal Implications of Practice

Physical Principles of Respiratory Care

E-Medicine in Respiratory Care

Fundamentals of Respiratory Care Research

The Respiratory System

The Cardiovascular System

Ventilation

Gas Exchange and Transport

Solutions, Body Fluids, and Electrolytes

Acid-Base Balance

Regulation of Breathing

Bedside Assessment of the Patient

Interpreting Clinical and Laboratory Data

Interpreting the Electrocardiogram

Analysis and Monitoring of Gas Exchange

Pulmonary Function Testing

Review of Thoracic Imaging

Flexible Bronchoscopy and the Respiratory Therapist

Nutrition Assessment

Pulmonary Infections

Obstructive Lung Disease: Chronic Obstructive Pulmonary Disease Copd, Asthma, and Related Diseases

Interstitial Lung Disease

Pleural Diseases

Pulmonary Vascular Disease

Acute Respiratory Distress Syndrome

Trauma, Burns and Near Drowning

Lung Cancer

Neuromuscular and Other Diseases of the Chest Wall

Disorders of Sleep

Neonatal and Pediatric Respiratory Disorders

Airway Pharmacology

Airway Management

Emergency Cardiovascular Life Support

Humidity and Bland Aerosol Therapy

Aerosol Drug Therapy

Medical Gas Therapy

Lung Expansion Therapy

Airway Clearance Therapy Act

Respiratory Failure and the Need for Ventilatory Support

Mechanical Ventilators

Physiology of Ventilatory Support

Patient Ventilator Interaction

Initiating and Adjusting Invasive Ventilatory Support

Noninvasive Ventilation

Extracorporeal Life Support Ecls

Monitoring the Patient in the Intensive Care Unit

Discontinuing Ventilatory Support

Neonatal and Pediatric Respiratory Care

Patient Education and Health Promotion

Cardiopulmonary Rehabilitation

Respiratory Care in Alternative Settings

Filters

Which of the following are considered therapeutic gases? 1) Oxygen (O₂) 2) O₂-NO mixture 3) O₂-He mixture 4) N₂O

The pressure of O₂or air in a bulk supply system is reduced to what standard working pressure?

What is the fire-risk classification of both N and CO₂?

What is the U.S. Food and Drug Administration (FDA) purity standard for O₂?

The gauge on an H cylinder of O₂ reads 2000 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 6 L/min?

Which of the following medical gases support combustion? 1) O₂ 2) N₂O 3) Compressed air 4) CO₂