CCRN Mechanical Ventilation Management 2

Question 1

A patient on volume-control ventilation suddenly shows a rising peak inspiratory pressure with an unchanged plateau pressure. What does this indicate?

Accepted Answer

An airway resistance problem such as secretions or bronchospasm

Answer

A rise in peak pressure with a stable plateau pressure reflects increased airway resistance, not a compliance change.

Question 2

Which finding best confirms correct endotracheal tube placement after intubation?

Accepted Answer

Sustained waveform capnography (ETCO2)

Answer

Sustained ETCO2 on waveform capnography is the most reliable confirmation of tracheal placement.

Question 3

A patient develops auto-PEEP (intrinsic PEEP). Which ventilator change most directly addresses it?

Accepted Answer

Decrease respiratory rate to lengthen expiratory time

Answer

Lowering the rate (and thus extending expiratory time) allows fuller exhalation, reducing air trapping.

Question 4

In ARDS, lung-protective ventilation targets which tidal volume?

Accepted Answer

6 mL/kg of predicted body weight

Answer

ARDSNet protocol uses 6 mL/kg of predicted body weight to limit volutrauma.

Question 5

Plateau pressure should be maintained below which value to limit ventilator-induced lung injury?

Accepted Answer

30 cm H2O

Answer

Keeping plateau pressure under 30 cm H2O reduces alveolar overdistension and barotrauma.

CCRN Review Practice Test

CCRN Review Practice Test

CCRN Mechanical Ventilation Management 2