Effect of Mouth Breathing on Exercise Induced Bronchoconstriction.
The Effect of Mouth Breathing on Exercise Induced Bronchoconstriction in Children.
Introduction: Exercise induced bronchoconstriction (EIB) is a common finding in the pediatric population with and without asthma. EIB is suspected with a drop of 10-15% in Forced expiratory volume in the 1st second (FEV1) during exercise challenge test (ECT). Some researchers assume that oral breathing, in several mechanisms, increase hyper-responsiveness of the airways.
Aim: Asses the effect of a nose clip and allergic rhinitis in EIB. Hypothesis: The use of a nose clip in exercise challenges will increase the rate of positive tests. However, we assume that children with symptomatic allergic rhinitis will not demonstrate similar trends.
Methods: A prospective, single center cohort study in a pediatric pulmonology institute, at Ruth's children hospital, Rambam medical center, Haifa, Israel. Children referred for ECT will be registered to the study and will be evaluated in two separate visits. Visit 1 - ECT with a nose clip and visit 2 - ECT without a nose clip. Demographic and clinical data and measurements of serial vital signs, exercise data and lung functions will be taken, as well as Total Nasal Symptoms Score (TNSS) and Asthma Control Test (ACT) questionnaires.
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Introduction: Exercise induced bronchoconstriction (EIB) is a common finding in the pediatric population with and without asthma. EIB is evaluated with serial measurements of lung functions during exercise protocol. EIB is suspected with a drop of 10-15% in Forced expiratory volume in the 1st second (FEV1) during exercise challenge test (ECT). Some researchers assume that oral breathing, in several mechanisms, increase hyper-responsiveness of the airways.
Aim: Asses the effect of a nose clip and allergic rhinitis in exercise induced bronchoconstriction.
Hypothesis: The use of a nose clip in exercise challenges will increase the rate of positive tests. However, we assume that children with symptomatic allergic rhinitis will not demonstrate similar trends.
Methods: A prospective, single center cohort study in a pediatric pulmonology institute, at Ruth's children hospital, Rambam medical center, Haifa, Israel, during 2020-2021. Children referred for ECT will be registered to the study after signing an informed consent and will be evaluated in two separate visits. Visit 1 - ECT with a nose clip and visit 2 - ECT without a nose clip. ECT will be conducted according to the institute protocol, based on American Thoracic Society (ATS) guidelines. Demographic and clinical data and measurements of serial vital signs, exercise data and lung functions will be taken, as well as Total Nasal Symptoms Score (TNSS) and Asthma Control Test (ACT) questionnaires.
Undersøgelsestype
Tilmelding (Forventet)
Kontakter og lokationer
Studiekontakt
- Navn: Lea Bentur, MD
- Telefonnummer: +97244360
- E-mail: l_bentur@rambam.health.gov.il
Undersøgelse Kontakt Backup
- Navn: Ronen Bar-Yoseph, MD
- Telefonnummer: +97247774360
- E-mail: r_bar-yoseph@rambam.health.gov.il
Studiesteder
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Haifa, Israel
- Rekruttering
- Rambam Medical Center
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Kontakt:
- Ronen Bar-Yoseph, MD
- Telefonnummer: +97247774360
- E-mail: r_bar-yoseph@rambam.health.gov.il
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Exercise challenge test as part of exercise induced asthma evaluation.
- Age 6-18 years.
Exclusion Criteria:
- Other chronic lung disease
- Significant background illness
- Severe asthma exacerbation or systemic steroids - last 2 months
- Persistent use of inhaled steroids - last 2 weeks
- Use of short acting bronchodilators - last 24 hours.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
Intervention / Behandling |
|---|---|
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Exercise challenge test (ECT) with and without nose clip (NC).
All participants after receiving informed consent were invited for 2 visits. Visit 1 - ECT performed with NC. Visit 2 - ECT performed without NC. Demographic and clinical data and measurements of vital signs, exercise data and lung functions were recorded. ECT completed on treadmill. Questionnaires: Total Nasal Symptom Score (TNSS 0-6). Asthma Control Test (ACT 5-25) . Positive ECT = drop in FEV1 >12% from baseline |
Baseline demographic, clinical and rest lung functions were recorded.
ECT was performed on treadmill according to fixed protocol.
Clinical data during ECT was recorded.
(visit 1- performed with nose clip, visit 2- performed without nose clip).
Lung function were measured and recorded at fixed time after ECT and after bronchodilator administration.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Primary end point
Tidsramme: 15 minutes
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Maximum drop of forced expiratory volume in one second - (FEV1) after exercise challenge test with and without Nose clip.
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15 minutes
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Secondary end point
Tidsramme: 15 minutes
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Forced expiratory volume in one second - (FEV1) improvement after bronchodilators during exercise challenge test with and without Nose clip
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15 minutes
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Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Lea Bentur, MD, Rambam Medical Center Haifa, Israel.
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Primær færdiggørelse (Forventet)
Studieafslutning (Forventet)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 0716-19-RMB
Plan for individuelle deltagerdata (IPD)
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