Question 1

The pressure difference between the mouth and alveoli 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 2

Which of the following may serve as limit variables?
I. pressure
II. flow
III. volume
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

Question 3

To be classified as a control variable:

Accepted Answer

A)  the variable is monitored only during one phase of ventilation 
B)  the variable must be measured and used as feedback to control output 
C)  the variable must be measured only during inspiration 
D)  the variable must be measured only during exhalation 
A)  the variable is monitored only during one phase of ventilation 
B)  the variable must be measured and used as feedback to control output 
C)  the variable must be measured only during inspiration 
D)  the variable must be measured only during exhalation

Question 4

The diaphragm is responsible for what percentage of the thoracic volume increase during inspiration?

Accepted Answer

A)  25% 
B)  50% 
C)  75% 
D)  none of the above 
A)  25% 
B)  50% 
C)  75% 
D)  none of the above

Question 5

A differential pressure transducer can measure flow if the pressure ports are connected to a:
I. venturi pneumotachometer
II. at the inlet and outlet of a flow delivery valve
III. at the pressure ports of a pneumotachometer

Accepted Answer

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

Question 6

A ventilator in which the gas that drives the ventilator is delivered to the patient is termed a:

Accepted Answer

A)  drive-circuit ventilator 
B)  double-circuit ventilator 
C)  main-circuit ventilator 
D)  single-circuit ventilator 
A)  drive-circuit ventilator 
B)  double-circuit ventilator 
C)  main-circuit ventilator 
D)  single-circuit ventilator

Question 7

The pathology of your patient changes such that more secretions are produced and bronchospasm occurs. Airway caliber decreases by one-half. What happens to airway resistance?

Accepted Answer

A)  It stays the same. 
B)  It increases by one-half. 
C)  It doubles. 
D)  It increases by sixteen times. 
A)  It stays the same. 
B)  It increases by one-half. 
C)  It doubles. 
D)  It increases by sixteen times.

Question 8

A fluidic element used by the Monaghan 225/SIMV ventilator to power the exhalation valve is the:

Accepted Answer

A)  AND/NAND gate 
B)  OR/NOR gate 
C)  Schmidt trigger 
D)  flip-flop element 
A)  AND/NAND gate 
B)  OR/NOR gate 
C)  Schmidt trigger 
D)  flip-flop element

Question 9

You are using a ventilator circuit that has a tubing compliance of 3 mL/cmH2O. The peak pressure is 30 cmH2O, and the measured exhaled volume is 760 mL. What is the corrected volume?

Accepted Answer

A)  760 mL 
B)  757 mL 
C)  730 mL 
D)  670 mL 
A)  760 mL 
B)  757 mL 
C)  730 mL 
D)  670 mL

Question 10

You are using a ventilator circuit that has a tubing compliance of 4 mL/cmH2O. The peak pressure is 30 cmH2O, and the measured exhaled volume is 760 mL. What is the corrected volume?

Accepted Answer

A)  760 mL 
B)  756 mL 
C)  730 mL 
D)  640 mL 
A)  760 mL 
B)  756 mL 
C)  730 mL 
D)  640 mL

Question 11

A ventilator in which the gas delivered to the patient is independent from the gas that powers the ventilator is termed a:

Accepted Answer

A)  drive-circuit ventilator 
B)  double-circuit ventilator 
C)  main-circuit ventilator 
D)  single-circuit ventilator 
A)  drive-circuit ventilator 
B)  double-circuit ventilator 
C)  main-circuit ventilator 
D)  single-circuit ventilator

Question 12

The control circuit of a mechanical 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 13

Which of the following modes of ventilation maintains spontaneous breathing?

Accepted Answer

A)  volume control - CMV 
B)  volume control - SIMV 
C)  pressure control - SIMV 
D)  pressure control - APRV 
A)  volume control - CMV 
B)  volume control - SIMV 
C)  pressure control - SIMV 
D)  pressure control - APRV

Question 14

A mode of ventilation in which two CPAP levels are set and the patient may breathe spontaneously from both CPAP levels is termed:

Accepted Answer

A)  pressure support 
B)  pressure ventilation 
C)  airway pressure release ventilation (APRV) 
D)  bilevel positive airway pressure (BiPAP) 
A)  pressure support 
B)  pressure ventilation 
C)  airway pressure release ventilation (APRV) 
D)  bilevel positive airway pressure (BiPAP)

Question 15

Which of the following may serve as a drive mechanism for a mechanical ventilator?
I. bellows
II. piston
III. proportional solenoid valve (pneumatic)

Accepted Answer

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

Question 16

During volume control, which of the following variables are set by the clinician?
I. Volume
II.Pressure
III.Flow
IV.Inspiratory time

Accepted Answer

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

Question 17

Unlike a simple solenoid valve, a proportional solenoid valve can:

Accepted Answer

A)  open and close faster 
B)  open in increments 
C)  lock in the open or closed position 
D)  none of the above 
A)  open and close faster 
B)  open in increments 
C)  lock in the open or closed position 
D)  none of the above

Question 18

A common fluidic element often applied to control the phase of ventilation (inspiration or expiration) is a:

Accepted Answer

A)  AND/NAND gate 
B)  OR/NOR gate 
C)  Schmidt trigger 
D)  flip-flop element 
A)  AND/NAND gate 
B)  OR/NOR gate 
C)  Schmidt trigger 
D)  flip-flop element

Question 19

Which of the following are considered drive mechanisms:
I. pistons
II. bellows
III. compressors
IV. pneumatic circuits

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 20

The load required that a mechanical ventilator must overcome includes which of the following: I.	Elastic properties of the lungs
II.	Resistance properties of the lung
III.	The compliance of the lung

Accepted Answer

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

The pressure difference between the mouth and alveoli is termed the:

Which of the following may serve as limit variables? I. pressure II. flow III. volume IV. time

To be classified as a control variable:

The diaphragm is responsible for what percentage of the thoracic volume increase during inspiration?

A differential pressure transducer can measure flow if the pressure ports are connected to a: I. venturi pneumotachometer II. at the inlet and outlet of a flow delivery valve III. at the pressure ports of a pneumotachometer

A ventilator in which the gas that drives the ventilator is delivered to the patient is termed a:

The pathology of your patient changes such that more secretions are produced and bronchospasm occurs. Airway caliber decreases by one-half. What happens to airway resistance?

A fluidic element used by the Monaghan 225/SIMV ventilator to power the exhalation valve is the:

You are using a ventilator circuit that has a tubing compliance of 3 mL/cmH₂O. The peak pressure is 30 cmH₂O, and the measured exhaled volume is 760 mL. What is the corrected volume?

You are using a ventilator circuit that has a tubing compliance of 4 mL/cmH₂O. The peak pressure is 30 cmH₂O, and the measured exhaled volume is 760 mL. What is the corrected volume?

A ventilator in which the gas delivered to the patient is independent from the gas that powers the ventilator is termed a:

The control circuit of a mechanical ventilator refers to:

Which of the following modes of ventilation maintains spontaneous breathing?

A mode of ventilation in which two CPAP levels are set and the patient may breathe spontaneously from both CPAP levels is termed:

Which of the following may serve as a drive mechanism for a mechanical ventilator? I. bellows II. piston III. proportional solenoid valve (pneumatic)

During volume control, which of the following variables are set by the clinician? I. Volume II.Pressure III.Flow IV.Inspiratory time

Unlike a simple solenoid valve, a proportional solenoid valve can:

A common fluidic element often applied to control the phase of ventilation (inspiration or expiration) is a:

Which of the following are considered drive mechanisms: I. pistons II. bellows III. compressors IV. pneumatic circuits

The load required that a mechanical ventilator must overcome includes which of the following: I. Elastic properties of the lungs II. Resistance properties of the lung III. The compliance of the lung

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

Exam 7: Mechanical Ventilator Theory and Classification

The pressure difference between the mouth and alveoli is termed the:

Which of the following may serve as limit variables? I. pressure II. flow III. volume IV. time

To be classified as a control variable:

The diaphragm is responsible for what percentage of the thoracic volume increase during inspiration?

A differential pressure transducer can measure flow if the pressure ports are connected to a: I. venturi pneumotachometer II. at the inlet and outlet of a flow delivery valve III. at the pressure ports of a pneumotachometer

A ventilator in which the gas that drives the ventilator is delivered to the patient is termed a:

The pathology of your patient changes such that more secretions are produced and bronchospasm occurs. Airway caliber decreases by one-half. What happens to airway resistance?

A fluidic element used by the Monaghan 225/SIMV ventilator to power the exhalation valve is the:

You are using a ventilator circuit that has a tubing compliance of 3 mL/cmH2O. The peak pressure is 30 cmH2O, and the measured exhaled volume is 760 mL. What is the corrected volume?

You are using a ventilator circuit that has a tubing compliance of 4 mL/cmH2O. The peak pressure is 30 cmH2O, and the measured exhaled volume is 760 mL. What is the corrected volume?

A ventilator in which the gas delivered to the patient is independent from the gas that powers the ventilator is termed a:

The control circuit of a mechanical ventilator refers to:

Which of the following modes of ventilation maintains spontaneous breathing?

A mode of ventilation in which two CPAP levels are set and the patient may breathe spontaneously from both CPAP levels is termed:

Which of the following may serve as a drive mechanism for a mechanical ventilator? I. bellows II. piston III. proportional solenoid valve (pneumatic)

During volume control, which of the following variables are set by the clinician? I. Volume II.Pressure III.Flow IV.Inspiratory time

Unlike a simple solenoid valve, a proportional solenoid valve can:

A common fluidic element often applied to control the phase of ventilation (inspiration or expiration) is a:

Which of the following are considered drive mechanisms: I. pistons II. bellows III. compressors IV. pneumatic circuits

The load required that a mechanical ventilator must overcome includes which of the following: I. Elastic properties of the lungs II. Resistance properties of the lung III. The compliance of the lung

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

You are using a ventilator circuit that has a tubing compliance of 3 mL/cmH₂O. The peak pressure is 30 cmH₂O, and the measured exhaled volume is 760 mL. What is the corrected volume?

You are using a ventilator circuit that has a tubing compliance of 4 mL/cmH₂O. The peak pressure is 30 cmH₂O, and the measured exhaled volume is 760 mL. What is the corrected volume?