Practice Test Geeks(FFICM) Final Faculty of Intensive Care Medicine Practice Test
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Respiratory Management and Mechanical Ventilation Flashcards

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

    Answer: 6 ml/kg predicted body weight

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

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

    Answer: ≤30 cmH2O

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

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

    Answer: Inspiratory pressure above PEEP

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

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

    Answer: Prevent alveolar derecruitment and improve oxygenation

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

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

    Answer: Synchronized Intermittent Mandatory Ventilation (SIMV)

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

  6. Patient Self-Inflicted Lung Injury (P-SILI) in spontaneously breathing patients primarily results from:

    Answer: Excessive respiratory effort generating injurious transpulmonary pressure swings

    In P-SILI, vigorous inspiratory effort creates large negative pleural pressure swings that amplify transpulmonary pressure, causing lung injury even without invasive ventilation.

  7. In volume-controlled ventilation (VCV), which parameter varies in response to changes in respiratory system compliance?

    Answer: Peak airway pressure

    In VCV the tidal volume is fixed; changes in compliance or resistance are reflected as changes in peak (and plateau) airway pressure.

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