Cough Reflex Sensitivity and Bronchial Hyper-responsiveness
Pilot Studies Evaluating Cough Reflex Sensitivity and Bronchial Hyper-responsiveness: The Road to Cough and Wheeze in Patients With Gastroesophageal Reflux.
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Intervento / Trattamento
Intervento / Trattamento
Descrizione dettagliata
Tipo di studio
Tipo di studio
Iscrizione (Effettivo)
Iscrizione
Contatti e Sedi
Luoghi di studio
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Florida
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Jacksonville, Florida, Stati Uniti, 32224
- Mayo Clinic Florida
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Criteri di partecipazione
Criteri di ammissibilità
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Descrizione
Inclusion Criteria:
- symptomatic reflux (i.e., one symptom at least one day a week, with at least 'moderate' severity)
- no evidence of esophagitis
- non-smokers
Exclusion Criteria:
- previous gastrointestinal surgery (excluding minor surgeries, such as cholecystectomy, appendectomy
- active peptic ulcer disease
- Zollinger Ellison Syndrome
- Barrett's esophagus
- eosinophilic esophagitis
- cardiac disease
- diabetes or neurological deficit
- use of tricyclics
- selective serotonin reuptake inhibitors
- narcotics or benzodiazepines
- current use of medications that may affect symptoms of perception,lower esophageal sphincter basal pressure, acid clearance time or acid suppression
- antibiotics within 60 days
- Nursing mothers will be excluded
- allergies to citrus
- asthma
- chronic lung disease
- heart attack or stroke within the last three months
- hypersensitivity to methacholine products
- know aortic aneurysm
- uncontrolled hypertension (defined as systolic pressure greater than 200 or diastolic greater than 100)
- reduced pulmonary function test (forced expiratory volume in one second (FEV1) or the FEV1 to forced vital capacity (FVC) ratio (FEV1/FVC) of less that 70% of predicted value)
- None of the controls will have any GERD symptoms or ever used antireflux treatment.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Numero di gruppi/coorti
Coorti e interventi
Gruppo / CoorteGruppo / Coorte |
Intervento / TrattamentoIntervento / Trattamento |
|---|---|
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Healthy Volunteers
Subjects in this arm were healthy volunteers.
Subjects underwent both Cough Reflex Sensitivity and the Methacholine Challenge procedures.
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Subjects inhaled increasing concentrations of citric acid, which induces coughing in a dose-dependent, reproducible matter.
Following each inhalation, the number of coughs in the subsequent 15 seconds was counted and recorded.
The challenge was terminated once the citric acid induced 5 or more coughs and the logarithmic (base 10) concentration provoking 5 coughs was recorded.
A baseline spirometry was used to assess how well the participant's lungs work by measuring how much air was inhale, how much was exhale and how quickly the participant exhaled.
If this was normal, the subject inhaled slowly and deeply the methacholine test solution from a nebulizer and was told to hold their breath for 5 seconds.
This was repeated until 5 inhalations were performed in no more than two minutes.
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Non-erosive reflux disease with reflux
Subjects enrolled in this arm had non-erosive reflux disease with reflux (heartburn) for at least 6 of the preceding 12 months.
Subjects underwent both Cough Reflex Sensitivity and the Methacholine Challenge procedures.
|
Subjects inhaled increasing concentrations of citric acid, which induces coughing in a dose-dependent, reproducible matter.
Following each inhalation, the number of coughs in the subsequent 15 seconds was counted and recorded.
The challenge was terminated once the citric acid induced 5 or more coughs and the logarithmic (base 10) concentration provoking 5 coughs was recorded.
A baseline spirometry was used to assess how well the participant's lungs work by measuring how much air was inhale, how much was exhale and how quickly the participant exhaled.
If this was normal, the subject inhaled slowly and deeply the methacholine test solution from a nebulizer and was told to hold their breath for 5 seconds.
This was repeated until 5 inhalations were performed in no more than two minutes.
|
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Non-erosive reflux disease without reflux
Subjects enrolled in this arm had non-erosive reflux disease with normal levels of reflux (heartburn).
Subjects underwent both Cough Reflex Sensitivity and the Methacholine Challenge procedures.
|
Subjects inhaled increasing concentrations of citric acid, which induces coughing in a dose-dependent, reproducible matter.
Following each inhalation, the number of coughs in the subsequent 15 seconds was counted and recorded.
The challenge was terminated once the citric acid induced 5 or more coughs and the logarithmic (base 10) concentration provoking 5 coughs was recorded.
A baseline spirometry was used to assess how well the participant's lungs work by measuring how much air was inhale, how much was exhale and how quickly the participant exhaled.
If this was normal, the subject inhaled slowly and deeply the methacholine test solution from a nebulizer and was told to hold their breath for 5 seconds.
This was repeated until 5 inhalations were performed in no more than two minutes.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Lasso di tempo |
|---|---|
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Change in cough reflex sensitivity (CRS)
Lasso di tempo: baseline, approximately 4 weeks
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baseline, approximately 4 weeks
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Collaboratori e investigatori
Sponsor
Sponsor
Collaboratori
Collaboratori
Investigatori
Investigatori
- Investigatore principale: Kenneth R. DeVault, MD, Mayo Clinic
Studiare le date dei record
Studia le date principali
Inizio studio (Effettivo)
Inizio studio
Completamento primario (Effettivo)
Completamento primario
Completamento dello studio (Effettivo)
Completamento dello studio
Date di iscrizione allo studio
Primo inviato
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Primo Inserito
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento pubblicato
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Termini MeSH pertinenti aggiuntivi
- Malattie dell'apparato digerente
- Malattie delle vie respiratorie
- Disturbi respiratori
- Malattie gastrointestinali
- Malattie bronchiali
- Segni e sintomi, respiratori
- Disturbi della motilità esofagea
- Disturbi della deglutizione
- Malattie esofagee
- Reflusso gastroesofageo
- Tosse
- Iperreattività bronchiale
- Effetti fisiologici delle droghe
- Agenti neurotrasmettitori
- Meccanismi molecolari dell'azione farmacologica
- Agenti autonomi
- Agenti del sistema nervoso periferico
- Agenti colinergici
- Agonisti colinergici
- Agenti del sistema respiratorio
- Miotici
- Parasimpaticomimetici
- Agenti broncocostrittori
- Agonisti Muscarinici
- Cloruro di metacolina
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- 11-006873
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