Monitoring Respiratory Health in Children With Acute Asthma Using Wearable Electrical Bioimpedance and Breath Sounds:...

Area of Science:

• Biomedical Engineering
• Pediatric Pulmonology
• Wearable Technology

Background:

• Asthma is a critical childhood disease causing severe breathlessness and PICU admissions.
• Current assessments lack the temporal resolution to monitor rapidly changing respiratory physiology.
• Severe asthma exacerbations in children can lead to mechanical ventilation and mortality.

Purpose of the Study:

• To assess the feasibility of using wearable multimodal sensing to quantify respiratory health in children experiencing acute asthma.
• To evaluate the effectiveness of impedance pneumography (IP) and lung sounds (LS) in monitoring pediatric asthma patients.

Main Methods:

• 17 children with acute asthma and 9 healthy controls were monitored using wearable IP and LS sensors.
• Measurements were taken at pediatric intensive care unit (PICU) admission (T1) and discharge (T2).
• Respiratory rate, inspiration time (Ti), expiration time (Te), Te:Ti ratio, Ti/IBI, and spectral integrated intensity (SI) features were analyzed.

Main Results:

• In asthma patients, respiratory rate decreased while Te and Ti lengthened from T1 to T2.
• Spectral integrated intensity features showed significant changes, with lower frequencies decreasing and higher frequencies increasing.
• All analyzed features differed significantly between asthma patients (T1 and T2) and controls, indicating a trend toward normalcy at discharge.

Conclusions:

• Wearable multimodal sensing, combining IP and LS, is feasible for quantifying and tracking respiratory health in pediatric acute asthma.
• This technology can serve as an adjunctive clinical tool for real-time respiratory monitoring.
• Timely monitoring may enable better titration of care and improve outcomes for children with asthma.