Ventilator modes, settings, waveform interpretation, and weaning criteria tested on the NBRC TMC exam.
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- Volume control ventilation guarantees
- A set tidal volume with each breath, while pressure varies
- Pressure control ventilation guarantees
- A set inspiratory pressure with each breath, while tidal volume varies
- Assist-control (A/C) mode delivers
- A full set breath, whether patient-triggered or machine-triggered
- SIMV stands for
- Synchronized intermittent mandatory ventilation
- In SIMV, spontaneous breaths between mandatory breaths receive
- Only the level of support the patient generates, sometimes with pressure support added
- Pressure support ventilation (PSV) is used for
- Augmenting spontaneous breaths, commonly during weaning
- PEEP stands for
- Positive end-expiratory pressure
- Primary purpose of PEEP
- Preventing alveolar collapse and improving oxygenation by increasing functional residual capacity
- A typical starting PEEP for a patient without lung disease
- Around 5 cm H2O
- FiO2 stands for
- Fraction of inspired oxygen
- A normal starting tidal volume for lung-protective ventilation
- 6 to 8 mL per kg of ideal body weight
- Lung-protective ventilation targets a plateau pressure below
- 30 cm H2O
- Plateau pressure is measured by
- Applying an inspiratory hold at end-inspiration
- Plateau pressure primarily reflects
- Static lung and chest wall compliance
- Peak inspiratory pressure reflects
- Both airway resistance and lung/chest wall compliance
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