NBRC Mechanical Ventilation 3

Question 1

High-frequency oscillatory ventilation (HFOV) uses:

Accepted Answer

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

Answer

Large tidal volumes at low rates

Answer

Normal tidal volumes with oscillating PEEP

Answer

Intermittent jet insufflation

Question 2

The spontaneous breathing trial (SBT) is used to assess:

Accepted Answer

Patient readiness for extubation

Answer

Optimal PEEP settings

Answer

Response to bronchodilator therapy

Answer

Cardiac output during ventilation

Question 3

The rapid shallow breathing index (RSBI) predicts weaning success. A favorable RSBI is:

Accepted Answer

Less than 105 breaths/min/L

Answer

Greater than 105

Answer

Greater than 200

Answer

Equal to zero

Question 4

Which alarm condition most urgently requires immediate assessment and intervention?

Accepted Answer

Apnea alarm with absent patient effort

Answer

Low exhaled minute volume alarm

Answer

High pressure alarm that self-resolves

Answer

Low PEEP alarm during a cough

Question 5

Endotracheal tube cuff pressure should be maintained at:

Accepted Answer

20–30 cmH2O

Answer

5–10 cmH2O

Answer

10–15 cmH2O

Answer

40–50 cmH2O

Question 6

Inverse ratio ventilation (IRV) is characterized by:

Accepted Answer

Inspiratory time equal to or longer than expiratory time (I:E ≥ 1:1)

Answer

Inspiratory time shorter than expiratory time (I:E < 1:2)

Answer

Fixed 1:2 I:E ratio at all respiratory rates

Answer

Patient-triggered breaths only