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[Research advances on neurally adjusted ventilatory assist]
Yuliang Sheng1, Wei Shao2, Yuhao Wang1
1Department of Respiratory and Critical Care Medicine, the Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang 222000, Jiangsu, China.
Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
|November 21, 2023
Summary
Neurally adjusted ventilatory assist (NAVA) uses diaphragm electrical activity (EAdi) for synchronized, patient-centered breathing support. This advanced mechanical ventilation method improves outcomes and reduces ventilator-induced lung injury risk.
Area of Science:
- Critical Care Medicine
- Respiratory Physiology
- Biomedical Engineering
Background:
- Mechanical ventilation has evolved from controlled to assisted modes.
- Conventional ventilators rely on flow sensors and pressure controllers.
- Neurally adjusted ventilatory assist (NAVA) represents a significant advancement.
Approach:
- NAVA monitors the electrical activity of the diaphragm (EAdi).
- EAdi serves as the primary signal for sensing respiratory drive and triggering support.
- This approach allows for patient-centered, synchronized ventilatory assistance.
Key Points:
- NAVA synchronizes breathing instructions with the patient's neural signals.
- It offers patient-adjusted support levels, promoting natural respiratory effort.
- NAVA effectively unloads respiratory muscles and mitigates ventilator-induced lung injury (VILI).
Conclusions:
- NAVA enhances patient-ventilator coordination and gas exchange.
- It improves the success rate of weaning patients from mechanical ventilation.
- This review provides theoretical guidance for the clinical application of NAVA.
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