RRT RRT Mechanical Ventilation

Question 1

What is the primary goal of lung-protective ventilation in ARDS?

Accepted Answer

Limit tidal volume to 6 mL/kg IBW to prevent volutrauma

Answer

Maximize tidal volume to clear CO2

Answer

Use the highest PEEP possible

Answer

Achieve normocapnia at all times

Question 2

Which ventilator mode delivers a guaranteed tidal volume regardless of lung compliance changes?

Accepted Answer

Volume-Controlled Ventilation (VCV)

Answer

Pressure Support Ventilation (PSV)

Answer

Airway Pressure Release Ventilation (APRV)

Answer

Continuous Positive Airway Pressure (CPAP)

Question 3

What does PEEP stand for and what is its primary purpose in mechanical ventilation?

Accepted Answer

Positive End-Expiratory Pressure; prevents alveolar collapse at end-expiration

Answer

Peak Expiratory Effort Pressure; measures respiratory muscle strength

Answer

Positive Expiratory End Pressure; increases tidal volume

Answer

Peak End-Expiratory Pressure; reduces work of breathing

Question 4

A patient on volume control ventilation has a plateau pressure of 32 cmH2O. What is the appropriate action?

Accepted Answer

Decrease tidal volume to reduce lung injury risk

Answer

Increase PEEP to improve oxygenation

Answer

Increase tidal volume to improve ventilation

Answer

Switch to pressure control mode

Question 5

Which ventilator waveform indicates auto-PEEP (intrinsic PEEP)?

Accepted Answer

Flow not returning to zero before the next breath begins

Answer

A square pressure waveform

Answer

Increasing peak airway pressure over time

Answer

Declining tidal volumes on pressure control

Question 6

What is the normal range for static lung compliance in a mechanically ventilated adult?

Accepted Answer

60–100 mL/cmH2O

Answer

10–20 mL/cmH2O

Answer

150–200 mL/cmH2O

Answer

5–10 mL/cmH2O