The Role of GER in Exercise Triggered Asthma
|First Received Date ICMJE||September 12, 2005|
|Last Updated Date||September 12, 2005|
|Start Date ICMJE||October 2000|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE
||To determine whether patients with exercise-triggered asthma experience GER during exercise.|
|Original Primary Outcome Measures ICMJE||Same as current|
|Change History||No Changes Posted|
|Current Secondary Outcome Measures ICMJE
||To determine whether the exercise-induced GER within the subjects relates temporally to their exertional asthma.|
|Original Secondary Outcome Measures ICMJE||Same as current|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||The Role of GER in Exercise Triggered Asthma|
|Official Title ICMJE||The Role of GER in Exercise Triggered Asthma|
Gastroesophageal reflux is a major contributor to exercise-triggered asthma.
Two groups of patients will be studied: those with asthma who have difficulty with exertion, those without asthma who experience difficulty with exertion. Both groups will experience gastroesophageal reflux (GER) twice of less per week. Patients will complete a treadmill exam to determine their VO2 max. They will then undergo pH monitoring while exercising for 30 minutes at 65-70% of their VO2 max. Subjects will be given placebo or acid suppression pill for 12 weeks. At the end of 12 weeks, the subjects will repeat the exercise (30 minutes) and 24-hour pH study.
To determine whether patients with exercise-triggered asthma experience GER during exercise.
To determine whether the exercise-induced GER within the subjects relates temporally to their exertional asthma.
To evaluate the efficacy of potent acid suppression with a proton pump inhibitor in suppressing exercise-triggered GER and asthma in these subjects.
Population to be evaluated:
Exercise-triggered asthmatics – defined as asthmatics with exertion as their primary exacerbating factor and experiencing less than two episodes of classic gastroesophageal reflux a week.
These patients will be randomized into three different treatment groups:
12 patients will be studied in each group.
pH data - Data will be collected on the frequency and duration of the reflux episodes (number of episodes and the percent time the esophageal pH is less than 4.0). This will then be correlated with the respiratory symptom and changes in spirometry. A symptom index will be designed to associate the episodes of reflux and bronchospasm that occur within 5 minutes of a drop in esophageal pH.
Exercise Tolerance/Symptoms - comparisons will be made between the three groups regarding symptomatology during exercise after randomization to either placebo or differing doses of Aciphex.
Spirometry testing – done after exercise test. Comparisons between baseline and following treatment Symptoms scores – both the overall numerical grades of the patients quality of life and the number of asthmatic episodes and rescue inhaler use will be compared to baseline after the 12 week study.
The asthma database at the University covers approximately 500 patients. A database search will be performed to identify patients suitable for recruitment. Additional recruitment, if needed, will be pursued through radio advertising. Once the study is initiated, the baseline time for therapy is 12 weeks for each patient. An estimate of the time necessary to complete the study is 15 months.
Exercise triggered asthma has not been well studied with respect to its relationship to GER. This study will be considered a pilot study with 12 subjects per arm. Results from this study may be used to power a follow up study.
|Study Type ICMJE||Interventional|
|Study Phase||Phase 2
|Study Design ICMJE||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Primary Purpose: Diagnostic
|Intervention ICMJE||Drug: Achipex|
|Study Arm (s)||Not Provided|
|Publications *||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Completion Date||September 2005|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
|Ages||18 Years to 65 Years|
|Accepts Healthy Volunteers||No|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Location Countries ICMJE||United States|
|NCT Number ICMJE||NCT00204672|
|Other Study ID Numbers ICMJE||RAB-USA-46|
|Has Data Monitoring Committee||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor ICMJE||University of Utah|
|Collaborators ICMJE||PriCara, Unit of Ortho-McNeil, Inc.|
|Information Provided By||University of Utah|
|Verification Date||September 2005|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP