Backlinkable RT asset
Ventilator modes quick reference
This quick reference helps RT learners compare common ventilator modes by what is controlled, what varies, what to monitor, and which patient changes require reassessment.
Print-friendly: use your browser print dialog to save this page as a PDF.
How to use it
- Identify what the ventilator controls.
- Predict what variable will change with lung mechanics.
- Connect alarms and waveforms to patient assessment.
Safety checks
- Monitor plateau pressure and driving pressure trends.
- Reassess oxygenation after PEEP changes.
- Check synchrony before blaming the mode.
| Mode | Controlled variable | Watch for |
|---|---|---|
| Volume control | Tidal volume | High pressure with poor compliance or obstruction |
| Pressure control | Inspiratory pressure | Changing tidal volume as compliance changes |
| Pressure support | Patient-triggered support | Fatigue, apnea, or poor synchrony |
Frequently asked questions
- What is the difference between volume control and pressure control?
- Volume control sets tidal volume and lets pressure vary; pressure control sets inspiratory pressure and lets tidal volume vary with mechanics.
- Which ventilator mode should RT students learn first?
- Start with volume control and pressure control, then add SIMV, pressure support, CPAP, and BiPAP once control variables are clear.