Clinical implication of exhaled breath temperature measurement in pediatric asthma.
10.4168/aard.2017.5.3.147
- Author:
Soo Yeon KIM
1
;
Jung Yoon KIM
;
Yoon Ki HAN
;
Jong Deok KIM
;
In Suk SOL
;
Young A PARK
;
Yoon Hee KIM
;
Kyung Won KIM
;
Myung Hyun SOHN
;
Kyu Earn KIM
Author Information
1. Department of Pediatrics, Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea. YHKIM@yuhs.ac
- Publication Type:Original Article
- Keywords:
Asthma;
Child;
Inflammation;
Exhaled breath temperature
- MeSH:
Asthma*;
Child;
Eosinophils;
Humans;
Immunoglobulin E;
Inflammation;
Methacholine Chloride;
Nitric Oxide;
Skin;
Spirometry
- From:Allergy, Asthma & Respiratory Disease
2017;5(3):147-152
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: Exhaled breath temperature (EBT) has been suggested as a noninvasive marker of airway inflammation in asthma. The aim of this study was to determine its clinical implication in children with asthma. METHODS: A total of 233 children were enrolled in this study. Among them, 116 were asthmatic children and 117 were healthy children. Spirometry, bronchodilator response (BDR) test, methacholine challenge test, and skin prick test were performed. EBT, fractional exhaled nitric oxide (FeNO), blood eosinophils, and total IgE levels were measured. EBT was measured by using X-halo. RESULTS: EBT was significantly higher in the asthma group than in the control group (median [interquartile range], 32.1℃ [30.0℃–33.9℃] vs. 29.7℃ [29.0℃–31.3℃], P<0.001). EBT was significantly higher in poorly or partly controlled asthmatic children than well-controlled asthmatic children (33.5℃ [31.0℃–34.4℃] vs. 30.3℃ [29.3℃–32.9℃], P<0.0001). Among total subjects, EBT was significantly higher in the atopic group than in the nonatopic group (32.4℃ [30.3℃–34.0℃] vs. 29.8℃ [29.0℃–30.3℃], P<0.001). There were neither significant associations between EBT and BDR (r=0.109, P=0.241) nor between EBT and PC20 (provocation concentration causing a 20% fall in FEV1) in total subjects (r=0.127, P=0.316). EBT did not show any association with FeNO (r=0.353, P=0.071). CONCLUSION: Our study suggests that EBT might play a role as an ancillary marker for allergic airway inflammation and the degree of control in pediatric asthma patients. Additional studies are required to explore the value of EBT in detail.
