Respiratory muscles's thermographic analysis in asthmatic youth with and without bronchospasm induced by eucapnic voluntary hyperpnea

Respiratory muscles's thermographic analysis in asthmatic youth with and without bronchospasm induced by eucapnic voluntary hyperpnea

Objective To compare the thermographic pattern of regions of interest (ROI) of respiratory muscles in young asthmatics with and without bronchospasm induced by eucapnic voluntary hyperpnea (EVH). Materials and Methods Cross‐sectional study carried out with 55 young (55% male and 45% females) aged 12...

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Bibliographic Details
Published in:Clinical physiology and functional imaging Vol. 44; no. 4; pp. 324 - 331
Main Authors: Santos, Camila M. de A., Quirino, Polyanna G. C., Rizzo, José Â., Medeiros, Décio, Ferreira, José J. de A., Costa, Manoel da C., Gaua, Nádia, Freya, Bayne, Martins, Marcelle de O., Junior, Marco A. C. V.
Format: Journal Article
Language:English
Published: England Wiley Subscription Services, Inc 01-07-2024
Subjects:
Adolescent
Age Factors
Asthma
Asthma - complications
Asthma - diagnosis
Asthma - physiopathology
Asthma, Exercise-Induced - diagnosis
Asthma, Exercise-Induced - physiopathology
Blood flow
bronchial hyperreactivity
Bronchial Spasm - etiology
Bronchial Spasm - physiopathology
Bronchospasm
Case-Control Studies
Child
Cross-Sectional Studies
exercise‐induced bronchospasm
Female
Forced Expiratory Volume
Humans
Hyperpnea
Hyperventilation - physiopathology
Lung - physiopathology
Male
Muscles
Predictive Value of Tests
Respiratory Muscles - physiopathology
Skin temperature
thermal imaging
Thermography
Thermography - methods
Time Factors
asthma
thermography
bronchial hyperreactivity
exercise‐induced bronchospasm
thermal imaging
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Summary:Objective To compare the thermographic pattern of regions of interest (ROI) of respiratory muscles in young asthmatics with and without bronchospasm induced by eucapnic voluntary hyperpnea (EVH). Materials and Methods Cross‐sectional study carried out with 55 young (55% male and 45% females) aged 12.5 ± 3.3 years, divided in nine nonasthmatics, 22 asthmatics without exercise‐induced bronchospasm compatible response (EIB‐cr) and 24 asthmatics with EIB‐cr. The diagnosis of EIB was given to subjects with a fall in forced expiratory volume in the first second (FEV1) ≥ 10% compared to baseline. Thermographic recordings of respiratory muscles were delimited in ROI of the sternocleidomastoid (SCM), pectoral, and rectus abdominis intention area. Thermal captures and FEV1 were taken before and 5, 10, 15 and 30 min after EVH. Results Twenty‐four (52.1%) of asthmatics had EIB‐cr. There was a decrease in temperature at 10 min after EVH test in the SCM, pectoral and rectus abdominis ROIs in all groups (both with p < 0.05). There was a decrease in temperature (% basal) in asthmatic with EIB‐cr compared to nonasthmatics in the rectus abdominis area (p < 0.05). Conclusion There was a decrease in temperature in the ROIs of different muscle groups, especially in asthmatics. The greater drop in FEV1 observed in individuals with EIB‐cr was initially associated with a decrease in skin temperature, with a difference between the nonasthmatics in the abdominal muscle area. It is likely that this decrease in temperature occurred due to a temporary displacement of blood flow to the most used muscle groups, with a decrease in the region of the skin evaluated in the thermography.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1475-0961
1475-097X
DOI:10.1111/cpf.12878