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Exhaled breath temperature as a tool for monitoring asthma control after an attack in children

In Suk Sol1, Yoon Hee Kim1, Soo Yeon Kim1

  • 1Department of Pediatrics, Severance Hospital, Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.

Pediatric Pulmonology
|January 5, 2019
PubMed

Insights

Exhaled breath temperature (EBT) is higher during asthma attacks in children and decreases as asthma improves. This non-invasive measurement can help monitor asthma control.

Area of Science:

  • Pediatric Pulmonology
  • Respiratory Medicine
  • Biomedical Engineering

Background:

  • Exhaled breath temperature (EBT) is a potential non-invasive marker for airway inflammation in asthma.
  • Longitudinal studies on EBT changes following pediatric asthma attacks are lacking.

Purpose of the Study:

  • To examine EBT fluctuations during and after pediatric asthma exacerbations.
  • To correlate EBT changes with respiratory physiological measurements.

Main Methods:

  • 38 hospitalized children (5-18 years) with asthma attacks were studied.
  • Daily measurements of EBT, peak expiratory flow rate (PEFR), and asthma scores during hospitalization.
  • Tests were repeated 1 week and 1 month post-discharge; data analyzed using linear mixed models.

Main Results:

  • EBT was significantly higher on admission compared to 1 week post-discharge (P=0.007).
  • Overall EBT decreased over time (P=0.007), correlating with PEFR improvements.
  • Plateau end-expiratory values showed dynamic associations with PEFR.

Conclusions:

  • Elevated EBT during asthma attacks in children gradually decreases with improved asthma control.
  • EBT shows promise as a non-invasive tool for monitoring pediatric asthma control.
Abstract

Keywords:
asthma attackchildrenexhaled breath temperaturepeak expiratory flow rate

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