Question 1

What is the usual method of monitoring the remaining contents in a gas-filled cylinder?

Accepted Answer

A) Weigh the cylinder. 
B) Read the pressure gauge. 
C) Compute the gas density. 
D) Read the cylinder label. 
A) Weigh the cylinder. 
B) Read the pressure gauge. 
C) Compute the gas density. 
D) Read the cylinder label.

Question 2

Compared to portable cylinders, a centrally located, piped-in bulk O2 system has which of the following advantages?
I.no need for a backup or reserve system
II.more convenient and less hazardous than cylinders
III.oxygen already reduced to its working pressure
IV.less risk of the O2 supply being depleted

Accepted Answer

A) I, II, and III 
B) II and IV 
C) III and IV 
D) II, III, and IV 
A) I, II, and III 
B) II and IV 
C) III and IV 
D) II, III, and IV

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

What is the PISS index hole position for O2?

Accepted Answer

A) 1 and 5 
B) 2 and 5 
C) 1 and 6 
D) 4 and 6 
A) 1 and 5 
B) 2 and 5 
C) 1 and 6 
D) 4 and 6

Question 5

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 6

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 7

The NFPA standard for bulk liquid O2 systems requires that the reserve supply be which of the following?

Accepted Answer

A) fixed cylinder bank of 75 H cylinders 
B) at least one large liquid O2 cylinder 
C) equal to the average gas use of 1 day 
D) at least 3000 cu/ft of gaseous O2 
A) fixed cylinder bank of 75 H cylinders 
B) at least one large liquid O2 cylinder 
C) equal to the average gas use of 1 day 
D) at least 3000 cu/ft of gaseous O2

Question 8

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 9

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

Accepted Answer

A) 2 hours 40 minutes 
B) 3 hours 10 minutes 
C) 4 hours 30 minutes 
D) 9 hours 15 minutes 
A) 2 hours 40 minutes 
B) 3 hours 10 minutes 
C) 4 hours 30 minutes 
D) 9 hours 15 minutes

Question 10

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 11

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 12

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 13

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

Accepted Answer

A) 1 hour 15 minutes 
B) 1 hour 45 minutes 
C) 2 hours 10 minutes 
D) 2 hours 40 minutes 
A) 1 hour 15 minutes 
B) 1 hour 45 minutes 
C) 2 hours 10 minutes 
D) 2 hours 40 minutes

Question 14

What do the components of a liquid O2 bulk storage tank include?
I.inner and outer steel shells, separated by a vacuum
II.safety system that vents O2 if warming occurs
III.vaporizer system that converts liquid O2 to gas
IV.pressure-reducing valves to lower pressure to 50 psig

Accepted Answer

A) I, II, and III 
B) II and IV 
C) I, II, III, and IV 
D) III and IV 
A) I, II, and III 
B) II and IV 
C) I, II, III, and IV 
D) III and IV

Question 15

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 16

Compressed gas cylinders are manufactured from which of the following?

Accepted Answer

A) copper or brass 
B) seamless steel 
C) seamless aluminum 
D) fiberglass 
A) copper or brass 
B) seamless steel 
C) seamless aluminum 
D) fiberglass

Question 17

If you have to deliver O2 to a patient directly from a bedside outlet station, which of the following devices would you select?

Accepted Answer

A) Thorpe tube flowmeter 
B) Bourdon type gauge 
C) pressure-reducing valve 
D) medical gas regulator 
A) Thorpe tube flowmeter 
B) Bourdon type gauge 
C) pressure-reducing valve 
D) medical gas regulator

Question 18

Which of the following is false about ASSS standards?

Accepted Answer

A) They provide specifications for more than 60 gases and mixtures. 
B) They apply only to cylinders sizes F through H/K. 
C) They apply to high-pressure connections. 
D) They provide a separate connector for all gases. 
A) They provide specifications for more than 60 gases and mixtures. 
B) They apply only to cylinders sizes F through H/K. 
C) They apply to high-pressure connections. 
D) They provide a separate connector for all gases.

Question 19

The needle valve of a flowmeter with a ball and float tube is completely closed. When you plug the flowmeter into a gas source, the float does not move. Which of the following can be concluded?

Accepted Answer

A) The device is not calibrated at 50 psi. 
B) The device is a Bourdon-gauge flowmeter. 
C) The device is pressure compensated. 
D) The device is affected by gravity. 
A) The device is not calibrated at 50 psi. 
B) The device is a Bourdon-gauge flowmeter. 
C) The device is pressure compensated. 
D) The device is affected by gravity.

Question 20

What is the primary purpose of indexed connector systems?

Accepted Answer

A) to prevent inadvertent misconnections between equipment 
B) to speed making connections between equipment 
C) to allow U.S. equipment to "mate" with foreign equipment 
D) to provide universal connections among all equipment 
A) to prevent inadvertent misconnections between equipment 
B) to speed making connections between equipment 
C) to allow U.S. equipment to "mate" with foreign equipment 
D) to provide universal connections among all equipment

Exam 37: Storage and Delivery of Medical Gases

What is the usual method of monitoring the remaining contents in a gas-filled cylinder?

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

What is the PISS index hole position for O2?

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

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

The NFPA standard for bulk liquid O2 systems requires that the reserve supply be which of the following?

In clinical practice, how is a positive identification made of the contents of a medical gas cylinder?

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

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

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

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?

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

What do the components of a liquid O2 bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O2 if warming occurs III.vaporizer system that converts liquid O2 to gas IV.pressure-reducing valves to lower pressure to 50 psig

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?

Compressed gas cylinders are manufactured from which of the following?

If you have to deliver O2 to a patient directly from a bedside outlet station, which of the following devices would you select?

Which of the following is false about ASSS standards?

The needle valve of a flowmeter with a ball and float tube is completely closed. When you plug the flowmeter into a gas source, the float does not move. Which of the following can be concluded?

What is the primary purpose of indexed connector systems?

History of Respiratory Care

Quality and Evidence-Based Respiratory Care

Patient Safety, Communication, and Record Keeping

Principles of Infection Control

Ethical and Legal Implications of Practice

Physical Principles of Respiratory Care

Computer Applications in Respiratory Care

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

Interpretation of Clinical Laboratory Data

Interpreting the Electrocardiogram

Analysis and Monitoring of Gas Exchange

Pulmonary Function Testing

A Review of Thoracic Imaging

Nutrition Assessment

Pulmonary Infections

Obstructive Lung Disease: Copd, Asthma, and Related Diseases

Interstitial Lung Disease

Pleural Diseases

Pulmonary Vascular Disease

Acute Lung Injury, Pulmonary Edema, and Multiple System Organ

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

Bronchial Hygiene Therapy

Respiratory Failure and the Need for Ventilatory Support

Mechanical Ventilators

Physiology of Ventilatory Support

Initiating and Adjusting Ventilatory Support

Noninvasive Positive Pressure Ventilation

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

What is the PISS index hole position for O₂?

The NFPA standard for bulk liquid O₂ systems requires that the reserve supply be which of the following?

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

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?

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

What do the components of a liquid O₂ bulk storage tank include? I.inner and outer steel shells, separated by a vacuum II.safety system that vents O₂ if warming occurs III.vaporizer system that converts liquid O₂ to gas IV.pressure-reducing valves to lower pressure to 50 psig

If you have to deliver O₂ to a patient directly from a bedside outlet station, which of the following devices would you select?