Respiratory Admittance by Oscillometry in Children (ArsEIB)
Respiratory Admittance Response to Exercise Challenge Test in Children
調査の概要
状態
条件
詳細な説明
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.
研究の種類
入学 (推定)
連絡先と場所
研究連絡先
- 名前:Iulia Ioan, MD PhD
- 電話番号:+33 3 83 15 47 94
- メール:ic.ioan@chru-nancy.fr
参加基準
適格基準
就学可能な年齢
- 子
健康ボランティアの受け入れ
サンプリング方法
調査対象母集団
説明
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
研究計画
研究はどのように設計されていますか?
デザインの詳細
コホートと介入
グループ/コホート |
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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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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Diagnostic performance of Ars
時間枠: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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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Sensitivity of Ars
時間枠: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
時間枠: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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協力者と研究者
出版物と役立つリンク
一般刊行物
- 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.
研究記録日
主要日程の研究
研究開始 (推定)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
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