Individualized Diagnosis and Treatment of Extraesophageal Reflux in Patients With Chronic Cough
- Conditions
- AllergyAsthmaChronic CoughExtraesophageal RefluxLaryngopharyngeal Reflux
- Interventions
- Diagnostic Test: Extraesophageal reflux diagnosticBehavioral: Lifestyle modifications and Antireflux diet
- Registration Number
- NCT04984304
- Lead Sponsor
- University Hospital Ostrava
- Brief Summary
Chronic cough is a very unpleasant symptom, significantly reduces the patient's quality of life, and bothers the neighborhood. A very common cause or co-factor of chronic cough is extraesophageal reflux (EER).
The aim of the project is the precise diagnosis of EER in patients with chronic cough (in patients with a simultaneously diagnosed allergic cause and without it).
- Detailed Description
Chronic cough is a very unpleasant symptom, significantly reduces the patient's quality of life, and bothers the neighborhood. A very common cause or co-factor of chronic cough is extraesophageal reflux (EER). Liquid reflux, or even just aerosol reflux, causes mucosal inflammation and sensitizes the mucous membrane of the airways, which is then sensitive to even slight noxa. The cough then further damages the mucosa, creating a vicious circle. EER can be the main cause of chronic cough, but also a worsening cofactor of cough in patients with other causes (allergic and non-allergic bronchial asthma, chronic rhinosinusitis, and others).
The aim of the project is the precise diagnosis of EER in patients with chronic cough (in patients with a simultaneously diagnosed allergic cause and without it). Accurate diagnosis and assessment of severity allow patients to be divided into 2 groups. The group with mild symptoms and the findings will be treated in the first phase with diet and lifestyle modifications. With a positive response to this "conservative" type of treatment, patients would not have to undergo a series of tests. Patients with severe problems and confirmed EER will be treated individually according to recommended measures.
Study protocol
* signing of Informed Consent
* anamnestic questionnaire (age, sex, weight, height, smoking, alcohol, reflux disease, treatment of allergic disease, pyrosis, treatment of reflux disease)
Allergology examination
* Cough Visual Analogue Scale (VAS)
* Hull Airway Reflux Questionnaire
* Asthma Control Test
* Spirometry
* Prick Tests
* Fractional Exhaled nitric oxide (FeNO) test
* Laboratory tests (IgE, specific IgE, ECP)
Otorhinolaryngologic examination
* Cough Visual Analogue Scale (VAS)
* RSS -12 (Reflux Symptom Score - 12)
* RSA - Short version (Reflux Sign Assessment - Short version)
* The Perceived Stress Scale
* Evaluation of Compliance with Antireflux Precaution Visual Analogue Scale (VAS)
* dividing patients into 2 arms
Arm 1 - mild cough only slightly worsening the quality of life (VAS 1-3) - treatment using lifestyle modifications and Antireflux diet for 3 months. In case of persistent severity of cough or worsening - continue to Arm 2 Arm 2 - moderate and severe cough that significantly worsen the quality of life (VAS 4-10)
Extraesophageal reflux diagnostic
* Esophageal 24-hour pH/Impedance Reflux Monitoring
* Peptest study on fasting
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 150
- age 18-80 years
- patients with chronic cough (cough that lasts 3 months or longer)
- consent with participation in the study
- patients using ACE inhibitors or Angiotensin II receptor blockers
- patients with head and neck cancer
- patients after radiotherapy in the head and neck area
- patients with airway or lung cancer
- patients with chronic lung disease except for bronchial asthma (COPD, interstitial lung disease, bronchiectasis, respiratory bronchiolitis)
- patients with chronic rhinosinusitis
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Moderate and severe cough Extraesophageal reflux diagnostic Moderate and severe cough that significantly worsen the quality of life (VAS 4-10) Mild cough Lifestyle modifications and Antireflux diet Mild cough only slightly worsening the quality of life (VAS 1-3)
- Primary Outcome Measures
Name Time Method EER severity and type and allergy 6 months Comparison of extraesophageal reflux severity and type in patients with chronic cough with or without concomitant allergic cause of cough. The number of EER events on impedance and improvement of RSA - Short version scale (Reflux Sign Assessment - Short version) will be observed and compared with improvement of objective measurements and clinical findings.
- Secondary Outcome Measures
Name Time Method Asthma severity and control 6 months Evaluation of the evolution of asthma severity and the level of asthma control in patients with bronchial asthma and extraesophageal reflux while following a diet and life-style modifications. The percentage of recommended diet compliance will be correlated with the possibility to discontinue administration of selected drugs (e.g. corticosteroids and biological treatment).
Allergic diseases and chronic cough with concomitant extraesophageal reflux 6 months Comparison of the frequency of individual allergic diseases in patients with chronic cough and concomitant extraesophageal reflux.
Individual phenotypes of bronchial asthma in patients with EER 6 months Comparison of the frequency of individual phenotypes of bronchial asthma in patients with proven extraesophageal reflux.
Diet and life-style modifications and asthma 6 months Evaluation of the importance of diet and life-style modifications in patients with mild symptoms findings of extraesophageal reflux in patients with concomitant bronchial asthma and without concomitant bronchial asthma. The percentage of recommended diet compliance will be compared with the scores of improvement of RSA - Short version scale (Reflux Sign Assessment - Short version) and clinical findings.
Trial Locations
- Locations (1)
University Hospital Ostrava
🇨🇿Ostrava, Moravian-Silesian Region, Czechia