Breathing Measurement During a Methacholine Test in Children With Asthma
Tests a breathing measurement method during a methacholine test in children with asthma.
Plain-language title generated from the registry record
Registry title: Forced Oscillations Technique During a Metacholine Test in Children
Key facts
- Where
- Montpellier, FranceSee the site
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 6 and 16 years old?
Source: NCT05734261, who can take part
Where in France
- CHU de MontpellierMontpellier, FranceTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- University Hospital, Montpellier
- Trial code
- NCT05734261
- Record updated
- 11 September 2026
- Original description
Asthma is the most common chronic lung disease in children. It affects more than 1 in 10 children in France. The methacholine bronchial challenge test (MBT) is indicated to assess the probability of asthma suggested by clinical symptoms by measuring the forced expiratory volume in one second (FEV1), after inhalation of a cumulative dose of methacholine. In children, the measurement of FEV1 requires a high level of cooperation from the child, which can be the source of false negatives or no result if this is not obtained. The objective of this study is to evaluate if the measurement of the respiratory function by the forced oscillations technique, allows to predict the variation of the FEV1 obtainedRead full original descriptionShow less
Interest of Forced Oscillations During a Methacholine Test in Children
Asthma is the most common chronic lung disease in children. It affects more than 1 in 10 children in France. The methacholine bronchial challenge test (MBT) is indicated to assess the probability of asthma suggested by clinical symptoms by measuring the forced expiratory volume in one second (FEV1), after inhalation of a cumulative dose of methacholine. In children, the measurement of FEV1 requires a high level of cooperation from the child, which can be the source of false negatives or no result if this is not obtained. The objective of this study is to evaluate if the measurement of the respiratory function by the forced oscillations technique, allows to predict the variation of the FEV1 obtained
Inclusion: Age between 6 and 16 years; FEV1 > 60%; Child referred to the pulmonary function test laboratory for a non-specific bronchial hyperactivity test with methacholine; Child under treatment with inhaled corticosteroids stopped for at least 3 weeks; Oral consent from the child and at least one of the legal representatives; Child affiliated or benefiting from a social security plan.
Exclusion: Upper or lower respiratory tract infections within 3 weeks prior to inclusion; Epilepsy under treatment; Use of a short-acting beta-adrenergic bronchodilator within the last 6 hours or anticholinergic bronchodilator within the last 12 hours; Use of a long-acting beta-adrenergic bronchodilator (licensed for use in children) in the past 36 hours; Subject's participation in another interventional study that may alter respiratory function; Patient unable to give consent, vulnerable.