Question 1

Compressed gas cylinders are manufactured from which of the following?

Accepted Answer

A)  Copper 
B)  Seamless steel 
C)  Seamless brass 
D)  Fiberglass 
A)  Copper 
B)  Seamless steel 
C)  Seamless brass 
D)  Fiberglass

Question 2

To prevent this type of accident, all cylinders have high-23. In clinical practice, how is a positive identification made of the contents of a medical gas cylinder?

Accepted Answer

A)  Noting the color of the cylinder 
B)  Inspecting the cylinder threads 
C)  Reading the cylinder label 
D)  Collecting and analyzing a gas sample 
A)  Noting the color of the cylinder 
B)  Inspecting the cylinder threads 
C)  Reading the cylinder label 
D)  Collecting and analyzing a gas sample

Question 3

Which of the following devices would you select if the goal was to accurately meter the flow through a jet nebulizer?

Accepted Answer

A)  Bourdon gauge 
B)  Flow restrictor 
C)  Uncompensated Thorpe tube 
D)  Compensated Thorpe tube 
A)  Bourdon gauge 
B)  Flow restrictor 
C)  Uncompensated Thorpe tube 
D)  Compensated Thorpe tube

Question 4

The gauge on a G cylinder of O2 reads 400 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 5 L/min?

Accepted Answer

A)  2 hr 40 min 
B)  3 hr 10 min 
C)  4 hr 30 min 
D)  9 hr 15 min 
A)  2 hr 40 min 
B)  3 hr 10 min 
C)  4 hr 30 min 
D)  9 hr 15 min

Question 5

Air for medical use in a hospital should be which of the following?
1) Particle-free
2) Oil-free
3) Dry

Accepted Answer

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

Question 6

The gauge on an E cylinder of O2 reads 800 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min?

Accepted Answer

A)  1 hr 15 min 
B)  1 hr 45 min 
C)  2 hr 10 min 
D)  2 hr 40 min 
A)  1 hr 15 min 
B)  1 hr 45 min 
C)  2 hr 10 min 
D)  2 hr 40 min

Question 7

Which of the following statements regarding O2 are true?
1) It is only slightly soluble in water.
2) It is odorless and transparent.
3) It is flammable.
4) It is heavier than air.

Accepted Answer

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

Question 8

What is the key difference between small compressed gas cylinders (sizes AA to E) and their larger counterparts (sizes F to K)?

Accepted Answer

A)  Small gas cylinders do not undergo regular DOT testing. 
B)  Small gas cylinders are always filled to lower pressures. 
C)  Small gas cylinders cannot be used for anesthetic gases. 
D)  Small gas cylinders use a yoke (not threaded) connector. 
A)  Small gas cylinders do not undergo regular DOT testing. 
B)  Small gas cylinders are always filled to lower pressures. 
C)  Small gas cylinders cannot be used for anesthetic gases. 
D)  Small gas cylinders use a yoke (not threaded) connector.

Question 9

You are planning a patient transport that will take approximately 1 hr. The patient requires manual ventilation with 10 L/min of O2. What is the minimum number of full E cylinders you would take with you?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
A)  2 
B)  3 
C)  4 
D)  5

Question 10

What is the indexed safety system for threaded high-pressure connections between large compressed gas cylinders and their attachments?

Accepted Answer

A)  Pin-Indexed Safety System (PISS) 
B)  Diameter-Index Safety System (DISS) 
C)  American Standard Safety System (ASSS) 
D)  CGA System 
A)  Pin-Indexed Safety System (PISS) 
B)  Diameter-Index Safety System (DISS) 
C)  American Standard Safety System (ASSS) 
D)  CGA System

Question 11

What do the components of a liquid O2 bulk storage tank include?
1) Inner and outer steel shells, separated by a vacuum
2) Safety system that vents O2 if warming occurs
3) Vaporizer system that converts liquid O2 to gas
4) Pressure-reducing valves to lower pressure to 50 psig

Accepted Answer

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

Question 12

What cylinder factor is used to compute the duration of flow for a 244 cu/ft (H/K) O2 or air cylinder?

Accepted Answer

A)  0.16 
B)  0.28 
C)  3.14 
D)  2.41 
A)  0.16 
B)  0.28 
C)  3.14 
D)  2.41

Question 13

What safety system is designed to prevent accidental interchanging among low-pressure (<200 psig) connectors such as those found on flowmeters and ventilators?

Accepted Answer

A)  PISS 
B)  ASSS 
C)  DISS 
D)  CGA 
A)  PISS 
B)  ASSS 
C)  DISS 
D)  CGA

Question 14

Helium must always be combined with at least how much O2?

Accepted Answer

A)  20% 
B)  30% 
C)  40% 
D)  50% 
A)  20% 
B)  30% 
C)  40% 
D)  50%

Question 15

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?

Accepted Answer

A)  O2 is 20 times less diffusible than CO2, N2O, or cyclopropane. 
B)  O2 has a critical temperature well below room temperature. 
C)  O2 has an extremely high gas solubility coefficient. 
D)  O2 has a boiling point below well below room temperature. 
A)  O2 is 20 times less diffusible than CO2, N2O, or cyclopropane. 
B)  O2 has a critical temperature well below room temperature. 
C)  O2 has an extremely high gas solubility coefficient. 
D)  O2 has a boiling point below well below room temperature.

Question 16

When minimal fluctuations in pressure and flow are critical factors, which of the following pressure-reducing valves would be the best choice?

Accepted Answer

A)  Single-stage preset pressure-reducing valve 
B)  Multiple-stage pressure-reducing valve 
C)  Uncompensated Thorpe tube flowmeter 
D)  Bourdon adjustable pressure regulator 
A)  Single-stage preset pressure-reducing valve 
B)  Multiple-stage pressure-reducing valve 
C)  Uncompensated Thorpe tube flowmeter 
D)  Bourdon adjustable pressure regulator

Question 17

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

Accepted Answer

A)  0.28 
B)  1.34 
C)  2.41 
D)  3.14 
A)  0.28 
B)  1.34 
C)  2.41 
D)  3.14

Question 18

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

Accepted Answer

A)  28 
B)  244 
C)  360 
D)  860 
A)  28 
B)  244 
C)  360 
D)  860

Question 19

Why are zone valves incorporated into a hospital's central gas piping systems?
1) To terminate O2 delivery to an area in case of fire
2) To allow selective maintenance without shutting the system down
3) To allow variable pressure reduction throughout the system

Accepted Answer

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

Question 20

Which of the following are advantages of using a flow restrictor to control the delivery of medical gases to a patient?
1) Preset metered flow
2) Low cost and simplicity
3) Gravity independence
4) Wide range of utility

Accepted Answer

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

Exam 40: Storage and Delivery of Medical Gases

Compressed gas cylinders are manufactured from which of the following?

To prevent this type of accident, all cylinders have high-23. In clinical practice, how is a positive identification made of the contents of a medical gas cylinder?

Which of the following devices would you select if the goal was to accurately meter the flow through a jet nebulizer?

The gauge on a G cylinder of O2 reads 400 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 5 L/min?

Air for medical use in a hospital should be which of the following? 1) Particle-free 2) Oil-free 3) Dry

The gauge on an E cylinder of O2 reads 800 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min?

Which of the following statements regarding O2 are true? 1) It is only slightly soluble in water. 2) It is odorless and transparent. 3) It is flammable. 4) It is heavier than air.

What is the key difference between small compressed gas cylinders (sizes AA to E) and their larger counterparts (sizes F to K)?

You are planning a patient transport that will take approximately 1 hr. The patient requires manual ventilation with 10 L/min of O2. What is the minimum number of full E cylinders you would take with you?

What is the indexed safety system for threaded high-pressure connections between large compressed gas cylinders and their attachments?

What do the components of a liquid O2 bulk storage tank include? 1) Inner and outer steel shells, separated by a vacuum 2) Safety system that vents O2 if warming occurs 3) Vaporizer system that converts liquid O2 to gas 4) Pressure-reducing valves to lower pressure to 50 psig

What cylinder factor is used to compute the duration of flow for a 244 cu/ft (H/K) O2 or air cylinder?

What safety system is designed to prevent accidental interchanging among low-pressure (<200 psig) connectors such as those found on flowmeters and ventilators?

Helium must always be combined with at least how much O2?

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?

When minimal fluctuations in pressure and flow are critical factors, which of the following pressure-reducing valves would be the best choice?

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

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

Why are zone valves incorporated into a hospital's central gas piping systems? 1) To terminate O2 delivery to an area in case of fire 2) To allow selective maintenance without shutting the system down 3) To allow variable pressure reduction throughout the system

Which of the following are advantages of using a flow restrictor to control the delivery of medical gases to a patient? 1) Preset metered flow 2) Low cost and simplicity 3) Gravity independence 4) Wide range of utility

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

The gauge on a G cylinder of O₂ reads 400 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 5 L/min?

The gauge on an E cylinder of O₂ reads 800 psig. Approximately how long would the contents of this cylinder last, until completely empty, at a flow of 3 L/min?

Which of the following statements regarding O₂ are true? 1) It is only slightly soluble in water. 2) It is odorless and transparent. 3) It is flammable. 4) It is heavier than air.

You are planning a patient transport that will take approximately 1 hr. The patient requires manual ventilation with 10 L/min of O₂. What is the minimum number of full E cylinders you would take with you?

What do the components of a liquid O₂ bulk storage tank include? 1) Inner and outer steel shells, separated by a vacuum 2) Safety system that vents O₂ if warming occurs 3) Vaporizer system that converts liquid O₂ to gas 4) Pressure-reducing valves to lower pressure to 50 psig

What cylinder factor is used to compute the duration of flow for a 244 cu/ft (H/K) O₂ or air cylinder?

Helium must always be combined with at least how much O₂?

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?

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

One cu/ft of liquid O₂is the equivalent to approximately how many cu/ft of gaseous O₂?

Why are zone valves incorporated into a hospital's central gas piping systems? 1) To terminate O₂delivery to an area in case of fire 2) To allow selective maintenance without shutting the system down 3) To allow variable pressure reduction throughout the system