FFICM Respiratory Management and Mechanical Ventilation

Question 1

According to the ARDSNet protocol, what tidal volume is recommended for lung-protective ventilation in ARDS?

Accepted Answer

6 ml/kg predicted body weight

Answer

The ARDSNet protocol recommends 6 ml/kg predicted body weight, reducible to 4 ml/kg if needed to keep plateau pressure ≤30 cmH2O.

Question 2

What is the target plateau pressure in lung-protective ventilation to minimize ventilator-induced lung injury?

Accepted Answer

≤30 cmH2O

Answer

A plateau pressure ≤30 cmH2O is the ARDSNet target to reduce barotrauma and volutrauma in ARDS.

Question 3

In pressure-controlled ventilation (PCV), which parameter is directly set by the clinician?

Accepted Answer

Inspiratory pressure above PEEP

Answer

In PCV the clinician sets the inspiratory pressure; the resulting tidal volume varies with lung compliance and resistance.

Question 4

What is the primary physiological purpose of applying PEEP in mechanically ventilated patients with ARDS?

Accepted Answer

Prevent alveolar derecruitment and improve oxygenation

Answer

PEEP maintains alveolar patency at end-expiration, preventing cyclic collapse-reopening injury and improving V/Q matching.

Question 5

Which ventilator mode delivers mandatory breaths at a minimum set rate while allowing the patient to trigger additional spontaneous breaths?

Accepted Answer

Synchronized Intermittent Mandatory Ventilation (SIMV)

Answer

SIMV synchronizes mandatory breaths with patient effort and permits unsupported spontaneous breaths between them, facilitating gradual weaning.

(FFICM) Final Faculty of Intensive Care Medicine Practice Test