RRT RRT Mechanical Ventilation 2

Question 1

During a spontaneous breathing trial (SBT), which finding suggests the patient is NOT ready for extubation?

Accepted Answer

Rapid shallow breathing index (RSBI) of 120

Answer

Respiratory rate of 18 breaths/min

Answer

SpO2 of 96% on 40% FiO2

Answer

Stable heart rate and blood pressure

Question 2

What is the primary purpose of adding pressure support in SIMV mode?

Accepted Answer

To overcome the work of breathing imposed by the endotracheal tube and circuit

Answer

To guarantee a backup rate

Answer

To set a maximum tidal volume

Answer

To trigger mandatory breaths

Question 3

Which parameter is used to calculate the driving pressure in mechanical ventilation?

Accepted Answer

Plateau pressure minus PEEP

Answer

Peak pressure minus PEEP

Answer

Mean airway pressure minus PEEP

Answer

Peak pressure minus plateau pressure

Question 4

In pressure-controlled ventilation, what happens to tidal volume if lung compliance decreases?

Accepted Answer

Tidal volume decreases

Answer

Tidal volume increases

Answer

Tidal volume stays the same

Answer

Respiratory rate automatically increases

Question 5

What is the best initial ventilator setting for FiO2 when initiating mechanical ventilation?

Accepted Answer

1.0 (100%), then titrate down

Answer

0.21 (room air)

Answer

0.40

Answer

0.60

Question 6

High-frequency oscillatory ventilation (HFOV) is characterized by which of the following?

Accepted Answer

Very small tidal volumes at high frequency (3–15 Hz)

Answer

Large tidal volumes at low frequency

Answer

Normal tidal volumes with high PEEP

Answer

Intermittent sighing breaths at set intervals