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Effect of Mouth Breathing on Exercise Induced Bronchoconstriction.

11. mai 2022 oppdatert av: Rambam Health Care Campus

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.

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert 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.

Studietype

Observasjonsmessig

Registrering (Forventet)

100

Kontakter og plasseringer

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Studiekontakt

Studer Kontakt Backup

Studiesteder

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

6 år til 18 år (Barn, Voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Sannsynlighetsprøve

Studiepopulasjon

Children and adolescences (6-18 years old) referred to perform exercise challenge test as a part of exercise induced asthma evaluation.

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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
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
Diagnostisk test: Exercise challenge test (ECT)
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.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Primary end point
Tidsramme: 15 minutes
Maximum drop of forced expiratory volume in one second - (FEV1) after exercise challenge test with and without Nose clip.
15 minutes

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Secondary end point
Tidsramme: 15 minutes
Forced expiratory volume in one second - (FEV1) improvement after bronchodilators during exercise challenge test with and without Nose clip
15 minutes

Samarbeidspartnere og etterforskere

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Sponsor

Rambam Health Care Campus

Etterforskere

  • Hovedetterforsker: Lea Bentur, MD, Rambam Medical Center Haifa, Israel.

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. august 2020

Primær fullføring (Forventet)

31. desember 2023

Studiet fullført (Forventet)

30. juni 2024

Datoer for studieregistrering

Først innsendt

11. mai 2022

Først innsendt som oppfylte QC-kriteriene

11. mai 2022

Først lagt ut (Faktiske)

17. mai 2022

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

17. mai 2022

Siste oppdatering sendt inn som oppfylte QC-kriteriene

11. mai 2022

Sist bekreftet

1. mai 2022

Mer informasjon

Begreper knyttet til denne studien

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 0716-19-RMB

Plan for individuelle deltakerdata (IPD)

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