Question 1

Occlusion of the expiratory valve of the ventilator at the end of a tidal inspiration enables measurement of which of the following?

Accepted Answer

A)  Pₚₗₐₜₑₐᵤ 
B)  Peak airway pressure 
C)  Maximum inspiratory pressure 
D)  Maximum expiratory pressure 
A)  Pₚₗₐₜₑₐᵤ 
B)  Peak airway pressure 
C)  Maximum inspiratory pressure 
D)  Maximum expiratory pressure

Question 2

Which analyzer would be most appropriate to use during an airlift transport of a patient?

Accepted Answer

A)  Galvanic 
B)  Electrical 
C)  Clark electrode 
D)  Polarographic 
A)  Galvanic 
B)  Electrical 
C)  Clark electrode 
D)  Polarographic

Question 3

The end point of a helium dilution test occurs when:

Accepted Answer

A)  nitrogen is washed out. 
B)  there is no more helium. 
C)  the change in pressure remains steady. 
D)  the helium percentage remains steady for 2 minutes. 
A)  nitrogen is washed out. 
B)  there is no more helium. 
C)  the change in pressure remains steady. 
D)  the helium percentage remains steady for 2 minutes.

Question 4

Which of the following statements is true if metabolism increases?

Accepted Answer

A)  PaCO₂ will rise even if ventilation increases. 
B)  The single-breath CO₂ curve (SBCO₂) increases if ventilation does not. 
C)  The volumetric CO₂ tracing will not change even if ventilation increases. 
D)  CO₂ production decreases proportionally. 
A)  PaCO₂ will rise even if ventilation increases. 
B)  The single-breath CO₂ curve (SBCO₂) increases if ventilation does not. 
C)  The volumetric CO₂ tracing will not change even if ventilation increases. 
D)  CO₂ production decreases proportionally.

Question 5

Which oxygen analyzer uses a semipermeable polytetrafluoroethylene membrane to separate oxygen from a potassium hydroxide bath containing a gold cathode and a lead anode?

Accepted Answer

A)  Paramagnetic 
B)  Galvanic 
C)  Electrical 
D)  Polarographic 
A)  Paramagnetic 
B)  Galvanic 
C)  Electrical 
D)  Polarographic

Question 6

Aneroid manometers use ________ to measure pressure.

Accepted Answer

A)  a vacuum chamber with a flexible diaphragm 
B)  capacitance and changes in output voltage 
C)  changes in inductance of two coils 
D)  a Wheatstone bridge circuit 
A)  a vacuum chamber with a flexible diaphragm 
B)  capacitance and changes in output voltage 
C)  changes in inductance of two coils 
D)  a Wheatstone bridge circuit

Question 7

Which of the following variables can be measured directly?

Accepted Answer

A)  Lung compliance 
B)  Work of breathing 
C)  Raw 
D)  Pₚₗₐₜₑₐᵤ 
A)  Lung compliance 
B)  Work of breathing 
C)  Raw 
D)  Pₚₗₐₜₑₐᵤ

Question 8

If the chest wall compliance of a mechanically ventilated patient decreases,which of the following will occur?

Accepted Answer

A)  Maximum inspiratory pressure will decrease. 
B)  Peak inspiratory pressure will decrease. 
C)  Pₚₗₐₜₑₐᵤ will increase. 
D)  Tidal volume will increase. 
A)  Maximum inspiratory pressure will decrease. 
B)  Peak inspiratory pressure will decrease. 
C)  Pₚₗₐₜₑₐᵤ will increase. 
D)  Tidal volume will increase.

Question 9

Which type of oxygen analyzer should not be used in the presence of anesthetic gases?

Accepted Answer

A)  Polarographic 
B)  Paramagnetic 
C)  Electrical 
D)  Galvanic 
A)  Polarographic 
B)  Paramagnetic 
C)  Electrical 
D)  Galvanic

Question 10

The accuracy of an instrument depends on which of the following?
1)The standard deviation of repeated measurements
2)The instrument's linearity and frequency response
3)The instrument's ability to reproduce a measurement
4)The instrument's sensitivity to environmental conditions

Accepted Answer

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

Question 11

Which of the following are factors that influence the partial pressure of alveolar carbon dioxide (PACO₂)?
1)Diffusion
2)Ventilation
3)CO₂ production
4)Perfusion of the lungs

Accepted Answer

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

Question 12

Two gases that can be falsely identified as nitrogen dioxide (NO₂)are:

Accepted Answer

A)  NH2 and HNO₃ 
B)  NH3 and HNO₃ 
C)  NO3 and HNO₃ 
D)  NH2 and nitrous oxide (N₂O) 
A)  NH2 and HNO₃ 
B)  NH3 and HNO₃ 
C)  NO3 and HNO₃ 
D)  NH2 and nitrous oxide (N₂O)

Question 13

Which statement is true concerning thermal flowmeters?

Accepted Answer

A)  Gas flow can be measured bidirectionally. 
B)  Gas velocity affects the amount of cooling. 
C)  Cooling increases the resistance of a heated wire. 
D)  Cooling decreases the resistance of a thermistor bead. 
A)  Gas flow can be measured bidirectionally. 
B)  Gas velocity affects the amount of cooling. 
C)  Cooling increases the resistance of a heated wire. 
D)  Cooling decreases the resistance of a thermistor bead.

Question 14

Which of the following is a complication of performing peak expiratory flows maneuvers?

Accepted Answer

A)  Increased static pressure 
B)  Increased airway resistance 
C)  Decreased chest compliance 
D)  Decreased mean airway pressure 
A)  Increased static pressure 
B)  Increased airway resistance 
C)  Decreased chest compliance 
D)  Decreased mean airway pressure

Question 15

Speed settings of 32 and 160 mm/min on a water-sealed spirometer can be used to measure which of the following?
1)Minute ventilation
2)Peak expiratory flows
3)Maximum voluntary ventilation
4)Forced vital capacity maneuvers

Accepted Answer

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

Question 16

The results of pulmonary function testing show a normal total lung capacity and decreased,but reversible,FEV₁ and FEV₂₅₋₇₅.The patient is a 22-year-old,nonsmoking man with a history of intermittent "noisy breathing." Which of the following is most likely the cause of his problem?

Accepted Answer

A)  Asthma 
B)  Emphysema 
C)  Pulmonary fibrosis 
D)  Severe restrictive pulmonary disease 
A)  Asthma 
B)  Emphysema 
C)  Pulmonary fibrosis 
D)  Severe restrictive pulmonary disease

Question 17

The capnogram seen in the figure shows which of the following?

Accepted Answer

A)  Excessive phase 4 
B)  Deep "curare cleft" 
C)  Indistinguishable phase 3 
D)  Slow cardiac oscillation 
A)  Excessive phase 4 
B)  Deep "curare cleft" 
C)  Indistinguishable phase 3 
D)  Slow cardiac oscillation

Question 18

The arterial-to-end-tidal CO₂ and the arterial-to-maximum expiratory partial pressure of carbon dioxide (PCO₂)gradients are both elevated and equal to each other.This finding is consistent with:

Accepted Answer

A)  chronic obstructive pulmonary disease. 
B)  left-sided heart failure. 
C)  esophageal intubation. 
D)  pulmonary embolism. 
A)  chronic obstructive pulmonary disease. 
B)  left-sided heart failure. 
C)  esophageal intubation. 
D)  pulmonary embolism.

Question 19

Which of the following happen to the wire within a Wheatstone bridge when it is exposed to oxygen concentrations higher than room air?
1)Its resistance decreases.
2)Its resistance increases.
3)It cools down.
4)It heats up.

Accepted Answer

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

Question 20

What type of device is used in an ICU to detect respiratory muscle fatigue?

Accepted Answer

A)  Aneroid manometer 
B)  Pressure plethysmograph 
C)  Inductive plethysmograph 
D)  Electromechanical transducer 
A)  Aneroid manometer 
B)  Pressure plethysmograph 
C)  Inductive plethysmograph 
D)  Electromechanical transducer

Occlusion of the expiratory valve of the ventilator at the end of a tidal inspiration enables measurement of which of the following?

Which analyzer would be most appropriate to use during an airlift transport of a patient?

The end point of a helium dilution test occurs when:

Which of the following statements is true if metabolism increases?

Which oxygen analyzer uses a semipermeable polytetrafluoroethylene membrane to separate oxygen from a potassium hydroxide bath containing a gold cathode and a lead anode?

Aneroid manometers use ________ to measure pressure.

Which of the following variables can be measured directly?

If the chest wall compliance of a mechanically ventilated patient decreases,which of the following will occur?

Which type of oxygen analyzer should not be used in the presence of anesthetic gases?

The accuracy of an instrument depends on which of the following? 1)The standard deviation of repeated measurements 2)The instrument's linearity and frequency response 3)The instrument's ability to reproduce a measurement 4)The instrument's sensitivity to environmental conditions

Which of the following are factors that influence the partial pressure of alveolar carbon dioxide (PACO₂)? 1)Diffusion 2)Ventilation 3)CO₂ production 4)Perfusion of the lungs

Two gases that can be falsely identified as nitrogen dioxide (NO₂)are:

Which statement is true concerning thermal flowmeters?

Which of the following is a complication of performing peak expiratory flows maneuvers?

Speed settings of 32 and 160 mm/min on a water-sealed spirometer can be used to measure which of the following? 1)Minute ventilation 2)Peak expiratory flows 3)Maximum voluntary ventilation 4)Forced vital capacity maneuvers

The results of pulmonary function testing show a normal total lung capacity and decreased,but reversible,FEV₁ and FEV₂₅₋₇₅.The patient is a 22-year-old,nonsmoking man with a history of intermittent "noisy breathing." Which of the following is most likely the cause of his problem?

The capnogram seen in the figure shows which of the following?

The arterial-to-end-tidal CO₂ and the arterial-to-maximum expiratory partial pressure of carbon dioxide (PCO₂)gradients are both elevated and equal to each other.This finding is consistent with:

Which of the following happen to the wire within a Wheatstone bridge when it is exposed to oxygen concentrations higher than room air? 1)Its resistance decreases. 2)Its resistance increases. 3)It cools down. 4)It heats up.

What type of device is used in an ICU to detect respiratory muscle fatigue?

Basic Physics for the Respiratory Therapist

Principles of Infection Control

Manufacture, Storage, and Transport of Medical Gases

Administering Medical Gases: Regulators, Flowmeters, and

Airway Management Devices and Advanced Cardiac Life Support

Humidity and Aerosol Therapy

Lung Expansion Therapy Devices

Assessment of Cardiovascular Function

Blood Gas Monitoring

Sleep Diagnostics

Introduction to Ventilators

Mechanical Ventilators: General-Use Devices

Infant and Pediatric Devices

Transport, Home Care, and Noninvasive Ventilatory Devices

Filters

Exam 8: Assessment of Pulmonary Function

Occlusion of the expiratory valve of the ventilator at the end of a tidal inspiration enables measurement of which of the following?

Which analyzer would be most appropriate to use during an airlift transport of a patient?

The end point of a helium dilution test occurs when:

Which of the following statements is true if metabolism increases?

Which oxygen analyzer uses a semipermeable polytetrafluoroethylene membrane to separate oxygen from a potassium hydroxide bath containing a gold cathode and a lead anode?

Aneroid manometers use ________ to measure pressure.

Which of the following variables can be measured directly?

If the chest wall compliance of a mechanically ventilated patient decreases,which of the following will occur?

Which type of oxygen analyzer should not be used in the presence of anesthetic gases?

The accuracy of an instrument depends on which of the following? 1)The standard deviation of repeated measurements 2)The instrument's linearity and frequency response 3)The instrument's ability to reproduce a measurement 4)The instrument's sensitivity to environmental conditions

Which of the following are factors that influence the partial pressure of alveolar carbon dioxide (PACO₂)? 1)Diffusion 2)Ventilation 3)CO₂ production 4)Perfusion of the lungs

Two gases that can be falsely identified as nitrogen dioxide (NO₂)are:

Which statement is true concerning thermal flowmeters?

Which of the following is a complication of performing peak expiratory flows maneuvers?

Speed settings of 32 and 160 mm/min on a water-sealed spirometer can be used to measure which of the following? 1)Minute ventilation 2)Peak expiratory flows 3)Maximum voluntary ventilation 4)Forced vital capacity maneuvers

The results of pulmonary function testing show a normal total lung capacity and decreased,but reversible,FEV₁ and FEV₂₅₋₇₅.The patient is a 22-year-old,nonsmoking man with a history of intermittent "noisy breathing." Which of the following is most likely the cause of his problem?

The capnogram seen in the figure shows which of the following?

The arterial-to-end-tidal CO₂ and the arterial-to-maximum expiratory partial pressure of carbon dioxide (PCO₂)gradients are both elevated and equal to each other.This finding is consistent with:

Which of the following happen to the wire within a Wheatstone bridge when it is exposed to oxygen concentrations higher than room air? 1)Its resistance decreases. 2)Its resistance increases. 3)It cools down. 4)It heats up.

What type of device is used in an ICU to detect respiratory muscle fatigue?

Basic Physics for the Respiratory Therapist

Principles of Infection Control

Manufacture, Storage, and Transport of Medical Gases

Administering Medical Gases: Regulators, Flowmeters, and

Airway Management Devices and Advanced Cardiac Life Support

Humidity and Aerosol Therapy

Lung Expansion Therapy Devices

Assessment of Cardiovascular Function

Blood Gas Monitoring

Sleep Diagnostics

Introduction to Ventilators

Mechanical Ventilators: General-Use Devices

Infant and Pediatric Devices

Transport, Home Care, and Noninvasive Ventilatory Devices

Filters