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Effort-adapted modes of assisted breathing
1Department of Anaesthesiology, Emergency and Intensive Care Medicine, University Medicine, Georg-August-University Göttingen, Göttingen, Germany. omoerer@gwdg.de
Current Opinion in Critical Care
|January 7, 2012
Summary
New effort-adapted mechanical ventilation modes enhance patient control and comfort. While physiologically sound, their impact on patient outcomes like reduced ventilation duration requires further study through large trials.
Area of Science:
- Critical Care Medicine
- Respiratory Physiology
- Mechanical Ventilation
Background:
- Mechanical ventilation has evolved to enhance patient control via lung mechanics and respiratory drive.
- Effort-adapted modes represent a significant advancement in assisted breathing.
- Conventional modes like pressure support ventilation have known drawbacks.
Purpose of the Study:
- To review new developments in mechanical ventilation focusing on patient control.
- To discuss the potential advantages of effort-adapted breathing modes.
- To evaluate the current evidence for advanced ventilatory support systems.
Main Methods:
- Review of recent literature on advanced mechanical ventilation modes.
- Analysis of effort-adapted ventilatory support concepts.
- Discussion of physiological principles and clinical implications.
Main Results:
- New modes like Adaptive Support Ventilation, Proportional Assist Ventilation, and Neurally Adjusted Ventilatory Assist adapt support to patient needs.
- These modes show promise for improved patient-ventilator interaction, respiratory muscle unloading, and patient comfort.
- Limited data currently exists on their impact on critical outcomes such as mortality or length of ICU stay.
Conclusions:
- Effort-adapted mechanical ventilation modes represent a physiological step forward.
- Growing evidence supports the concept of closed-loop, effort-adapted ventilation.
- Larger randomized controlled trials are needed to prove clinical outcome benefits and justify wider adoption over older modes.
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