Deck 11: High-Frequency Mechanical Ventilation

Question 1

Which type of high-frequency ventilator typically employs a rotating ball that starts and stops a high-flow gas source at a rapid rate?

A) high-frequency positive pressure ventilator (HFPPV)
B) high-frequency jet ventilator (HFJV)
C) high-frequency flow interrupter (HFFI)
D) high-frequency oscillatory ventilator (HFOV)

Answer 1

C

Question 2

What is the trigger variable for the SensorMedics 3100A ventilator?

A) flow
B) pressure
C) time
D) volume

Answer 2

C

Question 3

Which of the following ventilators may be used on infants?
I. Percussionaire VDR-4
II. SensorMedics 3100A
III. SensorMedics 3100B
IV.Bunnell Life Pulse

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

Answer 3

I, II, and IV

Question 4

What is the primary difference in the drive mechanism between the SensorMedics 3100A and 3100B ventilators?

A) a larger diaphragm
B) a more rigid circuit
C) a larger diameter circuit
D) a larger magnet

Question 5

What is the range of the bias flow for the SensorMedics 3100B ventilator?

A) 0 to 20 L/min
B) 0 to 40 L/min
C) 0 to 60 L/min
D) 0 to 80 L/min

Question 6

Which of the following ventilators may be used on infants and adults?
I. Percussionaire VDR-4
II. SensorMedics 3100A
III. SensorMedics 3100B
IV.Bunnell Life Pulse

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

Question 7

Which of the following best describes bulk flow of gas into and out of the lungs?

A) convective ventilation
B) asymmetric velocity profiles
C) Pendelluft
D) Taylor dispersion

Question 8

What are the trigger variables employed by the Percussionaire VDR-4?
I. flow
II. pressure
III. time
IV. manual

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

Question 9

Why would high-frequency ventilation be appropriate in managing refractory hypoxemia?

A) High-frequency ventilation provides lower mean airway pressure.
B) High-frequency ventilation provides lower intrathoracic pressures.
C) High-frequency ventilation provides minimal cardiac side effects from positive pressure.
D) High-frequency ventilation improves in gas exchange.

Question 10

Which of the following high-frequency ventilators requires a special endotracheal tube with an extra lumen or passage?

A) high-frequency positive pressure ventilator (HFPPV)
B) high-frequency jet ventilator (HFJV)
C) high-frequency flow interrupter (HFFI)
D) high-frequency oscillatory ventilator (HFOV)

Question 11

Which of the following theories of high-frequency ventilation describes enhanced diffusion by turbulence and eddies in the gas flow?

A) convective ventilation
B) asymmetric velocity profiles
C) Pendelluft
D) Taylor dispersion

Question 12

Which of the following are advantages of high-frequency ventilation when compared with conventional convective ventilation?
I. lower mean airway pressure
II. lower intrathoracic pressures
III. minimal cardiac side effects from positive pressure
IV. improvement in gas exchange

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

Question 13

Which of the following theories accounts for differences in time constants in different regions of the lung?

A) convective ventilation
B) asymmetric velocity profiles
C) Pendelluft
D) Taylor dispersion

Question 14

What is the interface between the ventilator and the patient's airway when using the Bunnell LifePulse ventilator?

A) 0.5-L reservoir
B) a venturi
C) the Phasitron
D) LifePort ET tube

Question 15

What is the control variable of the Percussionaire VDR-4?

A) flow
B) pressure
C) time
D) volume

Question 16

Why would high-frequency ventilation be effective in a patient with a large bronchopulmonary fistula and its associated air leak into a chest tube?

A) High-frequency ventilation provides lower mean airway pressure.
B) High-frequency ventilation provides lower intrathoracic pressures.
C) High-frequency ventilation provides minimal cardiac side effects from positive pressure.
D) High-frequency ventilation improves in gas exchange.

Question 17

What is the interface between the pulse generator and the client's airway when using the Percussionaire VDR-4?

A) a 0.5-L reservoir
B) a venturi
C) the Phasitron
D) LifePort ET tube

Question 18

What are the limit variables for the SensorMedics 3100A and 3100B ventilators?
I. flow
II. pressure
III. time
IV. volume

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

Question 19

Which of the following high-frequency ventilators are pneumatically powered and controlled?

A) Percussionaire VDR-4
B) SensorMedics 3100A
C) SensorMedics 3100B
D) Bunnell Life Pulse ventilator

Question 20

What type of high-frequency ventilator incorporates both active inspiration and active exhalation?

A) high-frequency positive pressure ventilator (HFPPV)
B) high-frequency jet ventilator (HFJV)
C) high-frequency flow interrupter (HFFI)
D) high-frequency oscillatory ventilator (HFOV)

Question 21

What is the control variables for the Bunnell LifePulse ventilator?
I. Flow
II. Pressure
III. Volume
IV. Time

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

Question 22

What are the trigger variable for the Bunnell LifePulse ventilator?

A) pressure
B) flow
C) volume
D) time