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Pressure modes of invasive mechanical ventilation
Benjamin D Singer1, Thomas C Corbridge
1Department of Medicine, and Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. bsinger007@md.northwestern.edu
Southern Medical Journal
|September 24, 2011
Summary
Pressure modes in mechanical ventilation deliver breaths using set pressure levels. While no single mode is superior, pressure control ventilation and others may improve patient-ventilator synchrony and lung protection.
Area of Science:
- Critical Care Medicine
- Respiratory Physiology
Background:
- Invasive mechanical ventilation utilizes various modes to support breathing.
- Pressure modes deliver breaths by controlling airway pressure over time.
Purpose of the Study:
- To review pressure modes of invasive mechanical ventilation.
- To discuss their characteristics and clinical implications.
Main Methods:
- Review of pressure-controlled ventilation modes including PC, PSV, PRVC, APRV, and BiLevel.
- Discussion of ventilator response to patient effort and respiratory mechanics.
Main Results:
- Modern ventilators exhibit predictable responses to patient effort within pressure modes.
- No specific pressure mode has shown consistent superiority in clinical trials.
Conclusions:
- Pressure modes may achieve patient-ventilator synchrony, adequate gas exchange, and limit lung injury.
- Empiric management with pressure modes can be effective in critical care settings.
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