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Respiratory Admittance by Oscillometry in Children (ArsEIB)
Respiratory Admittance Response to Exercise Challenge Test in Children
Studie Overzicht
Toestand
Conditie
Gedetailleerde beschrijving
Oscillometry is a pulmonary function testing technique that is well suited to children who have difficulty cooperating with conventional tests such as spirometry, as it is performed during spontaneous breathing and does not require specific respiratory maneuvers. In contrast, spirometry requires a deep inspiration followed by a forced and complete expiration.
Oscillometry provides a measure of respiratory impedance, which is the complex sum of respiratory resistance (Rrs) and respiratory reactance (Xrs). However, when the oscillatory signal is applied directly at the subject's airway opening, part of the flow signal may be lost due to cheek wall vibrations, resulting in an underestimation of Rrs. This underestimation may be more pronounced during bronchoconstriction, such as that induced by an exercise challenge test (ECT). This limitation may be overcome by calculating respiratory admittance (Ars), the inverse of respiratory impedance. When calculating the response to ECT, cheek wall admittance is cancelled out, potentially allowing a more accurate assessment of changes in respiratory mechanics during an ECT.
The hypothesis was that calculating Ars provides a more accurate assessment of changes in airway mechanics during an ECT.
Studietype
Inschrijving (Geschat)
Contacten en locaties
Studiecontact
- Naam: Iulia Ioan, MD PhD
- Telefoonnummer: +33 3 83 15 47 94
- E-mail: ic.ioan@chru-nancy.fr
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Kind
Accepteert gezonde vrijwilligers
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria:
- Children aged 5 to 16 years
- Children addressed by the pediatric pulmonologist to an exercise challenge test between January 2023 and April 2026
- Children with interpretable and reproducible oscillometric measurements
- Children with interpretable and reproducible spirometric measurements
Exclusion Criteria:
- Children who performed only spirometric measurements
- Children who performed only oscillometric measurements
- Children whose oscillometric and spirometric measurements are non-interpretable
- Children whose oscillometric and spirometric measurements are non-reproducible
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
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Children with positive response to exercise challenge test
Children aged 5 to 16 years old who performed an exercise challenge test and had a decrease of ≥ 10% in FEV1 after test (FEV1 = forced expiratory volume in 1 sec obtained by forced spirometry)
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Children with NEGATIVEresponse to exercise challenge test
Children aged 5 to 16 years old who performed an exercise challenge test and had a decrease of < 10% in FEV1 after test (FEV1 = forced expiratory volume in 1 sec obtained by forced spirometry)
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Diagnostic performance of Ars
Tijdsspanne: Through study completion, an average of 1 month
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Area under the ROC curves (AUC) for response to exercise challenge of Ars (computed from oscillometric parameters) compared with AUC of respiratory resistance to identify children with a positive challenge test and children with a negative challenge test
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Through study completion, an average of 1 month
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Sensitivity of Ars
Tijdsspanne: Through study completion, an average of 1 month
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Sensitivity of the response to exercise challenge of Ars (computed from oscillometric parameters) compared with the sensitivity of respiratory resistance to identify children with a positive challenge test
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Through study completion, an average of 1 month
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Specificity of Ars
Tijdsspanne: Through study completion, an average of 1 month
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Specificity of the response to exercise challenge of Ars (computed from oscillometric parameters) compared with the specificity of respiratory resistance to identify children with a positive challenge test
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Through study completion, an average of 1 month
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Medewerkers en onderzoekers
Sponsor
Publicaties en nuttige links
Algemene publicaties
- Farre R. Measuring intra-subject changes in respiratory mechanics by oscillometry: impedance versus admittance. Eur Respir J. 2022 Oct 6;60(4):2201198. doi: 10.1183/13993003.01198-2022. Print 2022 Oct. No abstract available.
- Nguyen YT, Demoulin B, Schweitzer C, Bonabel-Chone C, Marchal F. Identification of bronchodilator responsiveness by forced oscillation admittance in children. Pediatr Res. 2007 Sep;62(3):348-52. doi: 10.1203/PDR.0b013e3180db2933.
- Ioan I, Coutier L, Bonabel C, Albrecht J, Demoulin B, Marchal F, Schweitzer C, Varechova S. Airway obstruction, upper airway artifact and response to bronchodilator in asthmatic and healthy children. Pediatr Pulmonol. 2015 Nov;50(11):1053-9. doi: 10.1002/ppul.23131. Epub 2014 Nov 10.
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
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Laatste update ingediend die voldeed aan QC-criteria
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Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 2026PI185
Plan Individuele Deelnemersgegevens (IPD)
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