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Updated: Jul 10, 2026
14:49
Conducting Respiratory Oscillometry in an Outpatient Setting
Published on: April 8, 2022
Optimizing high-frequency-oscillation ventilation using acoustic parameters of the newborn lung: a feasibility study
Oded Luria1, David Kohelet, Ofer Barnea
1Department of Biomedical Engineering, Tel Aviv University, Israel.
Summary
Acoustic monitoring may help optimize lung volume during high-frequency oscillation (HFO) ventilation for newborns. This system uses sound echoes to assess lung mechanics and guide mean airway pressure (MAP) settings, potentially reducing lung injury.
Area of Science:
- Neonatal Medicine
- Biomedical Engineering
- Respiratory Physiology
Background:
- High-frequency oscillation (HFO) is standard for critically ill newborns.
- Maintaining optimal lung volume during HFO is crucial for minimizing ventilator-induced lung injury.
- Mean airway pressure (MAP) is the primary variable affecting lung volume.
Purpose of the Study:
- To develop and test an acoustic monitoring system for determining optimal MAP during HFO.
- To assess if acoustic measurements can reflect lung mechanical properties and volume.
Main Methods:
- Development of an acoustic system transmitting audible bursts and receiving lung echoes.
- Testing the system's ability to monitor lung volume changes and mechanical properties.
- Evaluating acoustic reflections for lung recruitment and optimal MAP determination.
Main Results:
- Acoustic measurements reflected lung mechanical properties.
- Increased lung volume was detected after exogenous surfactant administration.
- Acoustic hysteresis was measured, consistent with expected lung behavior.
Conclusions:
- The developed acoustic system shows potential for indicating lung recruitment during HFO.
- Acoustic monitoring may help define the optimal MAP range for HFO ventilation.
- This technology could improve lung protection strategies in neonatal HFO.
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