Question 1

Which of the following are control variables?
I. volume
II. pressure
III. flow
IV. time

Accepted Answer

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

Question 2

Which of the following may provide input power sources for mechanical ventilators?
I. electricity
II. pneumatic
III. hydraulic
IV. magnetic

Accepted Answer

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

Question 3

A variable that describes how inspiration is terminated is best termed a:

Accepted Answer

A)  trigger variable 
B)  limit variable 
C)  baseline variable 
D)  cycle variable 
A)  trigger variable 
B)  limit variable 
C)  baseline variable 
D)  cycle variable D

Question 4

The drive mechanism of a ventilator refers to:

Accepted Answer

A)  the power source for the ventilator 
B)  the system used to convert the power to ventilatory work 
C)  the system used to control rate or tidal volume 
D)  the gas pressure powering the ventilator 
A)  the power source for the ventilator 
B)  the system used to convert the power to ventilatory work 
C)  the system used to control rate or tidal volume 
D)  the gas pressure powering the ventilator

Question 5

A ventilator that uses proportional scissor valves is the:

Accepted Answer

A)  CareFusion Avea 
B)  Puritan Bennett840 
C)  Siemens SERVO 
D)  Newport Medical e360 
A)  CareFusion Avea 
B)  Puritan Bennett840 
C)  Siemens SERVO 
D)  Newport Medical e360

Question 6

Compliance is defined as:

Accepted Answer

A)  pressure divided by volume 
B)  volume divided by pressure 
C)  pressure divided by flow 
D)  flow divided by pressure 
A)  pressure divided by volume 
B)  volume divided by pressure 
C)  pressure divided by flow 
D)  flow divided by pressure

Question 7

Which of the following are used by fluidic logic elements in their operation?

Accepted Answer

A)  venturi principle 
B)  electronic elements 
C)  Bernoulli's principle 
D)  the Coanda effect 
A)  venturi principle 
B)  electronic elements 
C)  Bernoulli's principle 
D)  the Coanda effect

Question 8

A mode of mandatory ventilation in which all breaths are pressure limited and time cycled is termed:

Accepted Answer

A)  assist control (A/
C)  
B)  pressure support 
C)  synchronized intermittent mandatory ventilation (SIMV) 
D)  pressure control 
A)  assist control (A/
C)  
B)  pressure support 
C)  synchronized intermittent mandatory ventilation (SIMV) 
D)  pressure control

Question 9

Which of the following are classified as input power alarms?
I. loss of electrical power
II. ventilator inoperative
III. high pressure
IV. loss of oxygen

Accepted Answer

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

Question 10

Which of the following alarms is classified as a control-circuit alarm?

Accepted Answer

A)  loss of electrical power 
B)  ventilator inoperative 
C)  high pressure 
D)  loss of oxygen 
A)  loss of electrical power 
B)  ventilator inoperative 
C)  high pressure 
D)  loss of oxygen

Question 11

A variable that rises to a preset value during inspiration and is held at that value until exhalation is termed a:

Accepted Answer

A)  trigger variable 
B)  limit variable 
C)  baseline variable 
D)  cycle variable 
A)  trigger variable 
B)  limit variable 
C)  baseline variable 
D)  cycle variable

Question 12

Which of the following may be used as trigger variables?
I. pressure
II. flow
III. time
IV. manual

Accepted Answer

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

Question 13

Which of the following are common morphologies (shapes) of volume output waveforms?
I. ascending ramp
II. descending ramp
III. sinusoidal
IV. oscillating

Accepted Answer

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

Question 14

The pressure difference between the alveoli and the pleural space is termed the:

Accepted Answer

A)  transairway pressure 
B)  transpulmonary pressure 
C)  transthoracic pressure 
D)  drive pressure 
A)  transairway pressure 
B)  transpulmonary pressure 
C)  transthoracic pressure 
D)  drive pressure

Question 15

Which of the following pressure output waveforms is commonly produced by high-frequency ventilators?

Accepted Answer

A)  rectangular 
B)  exponential 
C)  sinusoidal 
D)  oscillating 
A)  rectangular 
B)  exponential 
C)  sinusoidal 
D)  oscillating

Question 16

Which of the following are classified as output alarms?
I. low pressure
II. low exhaled tidal volume
III. low-minute ventilation
IV. high respiratory rate

Accepted Answer

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

Question 17

The ventilator's input power refers to:

Accepted Answer

A)  the power source for the ventilator 
B)  the system used to convert the power to ventilatory work 
C)  the system used to control rate or tidal volume 
D)  the gas pressure powering the ventilator 
A)  the power source for the ventilator 
B)  the system used to convert the power to ventilatory work 
C)  the system used to control rate or tidal volume 
D)  the gas pressure powering the ventilator

Question 18

The trigger variable best describes:

Accepted Answer

A)  how the ventilator changes from inspiration to exhalation 
B)  how the ventilator delivers gas during inspiration 
C)  how a breath is initiated 
D)  what happens to pressure during exhalation 
A)  how the ventilator changes from inspiration to exhalation 
B)  how the ventilator delivers gas during inspiration 
C)  how a breath is initiated 
D)  what happens to pressure during exhalation

Question 19

A variable that describes what happens to pressure during exhalation is best termed a:

Accepted Answer

A)  trigger variable 
B)  limit variable 
C)  baseline variable 
D)  cycle variable 
A)  trigger variable 
B)  limit variable 
C)  baseline variable 
D)  cycle variable

Question 20

Solenoid valves on mechanical ventilators may be:

Accepted Answer

A)  manually activated 
B)  automated 
C)  pressure activated 
D)  all of the above 
A)  manually activated 
B)  automated 
C)  pressure activated 
D)  all of the above

Which of the following are control variables? I. volume II. pressure III. flow IV. time

Which of the following may provide input power sources for mechanical ventilators? I. electricity II. pneumatic III. hydraulic IV. magnetic

A variable that describes how inspiration is terminated is best termed a:

The drive mechanism of a ventilator refers to:

A ventilator that uses proportional scissor valves is the:

Compliance is defined as:

Which of the following are used by fluidic logic elements in their operation?

A mode of mandatory ventilation in which all breaths are pressure limited and time cycled is termed:

Which of the following are classified as input power alarms? I. loss of electrical power II. ventilator inoperative III. high pressure IV. loss of oxygen

Which of the following alarms is classified as a control-circuit alarm?

A variable that rises to a preset value during inspiration and is held at that value until exhalation is termed a:

Which of the following may be used as trigger variables? I. pressure II. flow III. time IV. manual

Which of the following are common morphologies (shapes) of volume output waveforms? I. ascending ramp II. descending ramp III. sinusoidal IV. oscillating

The pressure difference between the alveoli and the pleural space is termed the:

Which of the following pressure output waveforms is commonly produced by high-frequency ventilators?

Which of the following are classified as output alarms? I. low pressure II. low exhaled tidal volume III. low-minute ventilation IV. high respiratory rate

The ventilator's input power refers to:

The trigger variable best describes:

A variable that describes what happens to pressure during exhalation is best termed a:

Solenoid valves on mechanical ventilators may be:

Medical Gas Supply Equipment

Medical Gas Therapy Equipment

Humidity and Aerosol Therapy Equipment

Hyperinflation Therapy Equipment

Airway Management Equipment

Physiological Measurement and Monitoring Devices

Ventilators With Flow and Pressure Control Variables

Pediatric and Neonatal Ventilators

Non-Invasive, Homecare, and Transport Ventilators

High-Frequency Mechanical Ventilation

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Exam 7: Mechanical Ventilator Theory and Classification

Which of the following are control variables? I. volume II. pressure III. flow IV. time

Which of the following may provide input power sources for mechanical ventilators? I. electricity II. pneumatic III. hydraulic IV. magnetic

A variable that describes how inspiration is terminated is best termed a:

The drive mechanism of a ventilator refers to:

A ventilator that uses proportional scissor valves is the:

Compliance is defined as:

Which of the following are used by fluidic logic elements in their operation?

A mode of mandatory ventilation in which all breaths are pressure limited and time cycled is termed:

Which of the following are classified as input power alarms? I. loss of electrical power II. ventilator inoperative III. high pressure IV. loss of oxygen

Which of the following alarms is classified as a control-circuit alarm?

A variable that rises to a preset value during inspiration and is held at that value until exhalation is termed a:

Which of the following may be used as trigger variables? I. pressure II. flow III. time IV. manual

Which of the following are common morphologies (shapes) of volume output waveforms? I. ascending ramp II. descending ramp III. sinusoidal IV. oscillating

The pressure difference between the alveoli and the pleural space is termed the:

Which of the following pressure output waveforms is commonly produced by high-frequency ventilators?

Which of the following are classified as output alarms? I. low pressure II. low exhaled tidal volume III. low-minute ventilation IV. high respiratory rate

The ventilator's input power refers to:

The trigger variable best describes:

A variable that describes what happens to pressure during exhalation is best termed a:

Solenoid valves on mechanical ventilators may be:

Medical Gas Supply Equipment

Medical Gas Therapy Equipment

Humidity and Aerosol Therapy Equipment

Hyperinflation Therapy Equipment

Airway Management Equipment

Physiological Measurement and Monitoring Devices

Ventilators With Flow and Pressure Control Variables

Pediatric and Neonatal Ventilators

Non-Invasive, Homecare, and Transport Ventilators

High-Frequency Mechanical Ventilation

Filters