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Approaches to ventilation in intensive care.
Peter M Spieth1, Thea Koch, Marcelo Gama de Abreu
1Department of Anesthesiology and Intensive Care, University Hospital Carl Gustav Carus, Dresden.
Deutsches Arzteblatt International
|November 12, 2014
Summary
Modern mechanical ventilation modes aim to improve lung protection and patient-ventilator synchrony. While promising for reducing invasiveness and duration of ventilation, more clinical trials are needed for definitive conclusions.
Area of Science:
- Intensive care medicine
- Respiratory therapy
- Biomedical engineering
Background:
- Mechanical ventilation is a critical life-saving intervention for ~35% of ICU patients.
- Ventilation-associated pneumonia affects ~15% of ventilated patients.
- Protective ventilation strategies to prevent lung damage are a key clinical focus.
Purpose of the Study:
- To review modern mechanical ventilation modes.
- To compare them with conventional lung-protecting modes.
- To assess their impact on pulmonary function and patient-ventilator synchrony.
Main Methods:
- Selective literature search for pertinent articles.
- Review of modern ventilation modes including high-frequency ventilation, proportional assist ventilation (PAV), neurally adjusted ventilatory assist (NAVA), and closed-loop systems.
Main Results:
- Modern modes optimize lung protection, improve pulmonary function, and enhance patient-ventilator synchrony.
- High-frequency ventilation uses low tidal volumes (1-2 mL/kgBW) at high rates (up to 12 Hz).
- Computer-guided closed-loop systems demonstrated a 32% reduction in weaning times in a meta-analysis.
Conclusions:
- Current evidence on newer ventilation modes is insufficient for definitive clinical conclusions.
- These modes may reduce invasiveness and duration of mechanical ventilation.
- Randomized trials with clinically relevant endpoints are necessary.
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