View clinical trials related to Cough.
Filter by:Despite its commonplace use in respiratory medicine the mechanism whereby inhalation challenge with a variety of mild acid aerosols produces a dose related and predictable cough is unknown. In this proposal the investigators wish to use established cough challenge methodology to explore the mechanism of action of agents provoking cough both in health and disease. The hypotheses to be tested include: - Intracellular changes in pH, rather than extracellular changes, are key in the activation of TRP receptors, the main sensor for provoking cough. - ATP acting through P2X channels is the mechanism of increased nerve excitability underlying cough hypersensitivity.
This study is to determine whether physiologic measures (peak cough flow, measures of respiratory muscle strength including MIP, MEP ,SNIP, and spirometry) can predict spontaneous cough clearance (as measured by a nuclear medicine study) in children with neuromuscular disease. It will also determine whether airway clearance is augmented by high frequency chest wall oscillation.
This study aim is to observe the response to Bambuterol Hydrochloride tablets treatment in subjects with eosinophilic bronchitis . The investigators hypothesize: A few of subjects with EB have some responses to Bambuterol Hydrochloride tablets therapy. Most of subjects with CVA respond well to Bambuterol Hydrochloride tablets therapy
Post operative sore throat (POST) following tracheal intubation is a common problem causing dissatisfaction and discomfort to the patients. Prophylactic use of both lidocaine and dexamethasone has been used independently for this purpose. However, there is no study assessing the synergistic analgesic effects of lidocaine and dexamethasone for POST. The purpose of this study is to compare the effect of lidocaine, dexamethasone and lidocaine dexamethasone combination on the incidence and severity of POST.
The purpose of this study is to determine if there is comparable efficacy between carbocisteine and a protective cough syrup from natural ingredients in children's cough due to upper respiratory tract infections (URTI) such as the common cold. The hypothesis is that protecting the throat is very useful in decreasing cough severity, both day and night, without needing to subdue such an important reflex as cough, and without only acting on mucous fluidification, especially in children where sedation and excessive fluidification is dangerous. The research hypothesis is that the protective (Grintuss) Syrup relieves cough (frequency, intensity, degree of disturbance due to nocturnal cough, and improves the quality of sleep of the child) as much as or more than the carbocysteine syrup usually used to treat children (Syr Mucolit).
The investigators want to see whether the test drug in this research study, 2-hydroxypropyl-beta-cyclodextrin (2HPBCD), might potentially be able to improve cough in healthy volunteers. The investigators are initially recruiting healthy volunteers such as who are free from any respiratory disease and not on any concurrent medication, so there are no confusing effects from pre-existing respiratory symptoms or disease, nor interaction of any medication with the test drug.
Pepper sprays and pepper gas grenades are used by riot police at various places in the world for crowd control. Data about the acute effects based on human studies is extremely scarce. Kashmir valley in the northern Indian state of Jammu & Kashmir has witnessed political turmoil for the past 22 years and incidents of stone pelting are common wherein groups of youth indulge in stone pelting at the security personnel. While there have been previous episodes of fatalities associated with incidents of firing by the security personnel; non lethal methods are adopted routinely now. These include lathis, water cannons, tear gas and more recently the pepper gas grenades. The pepper grenades explode in the area and the adverse effects are perceived by the population in the area too who are even sitting in their homes. The study proposes to observe the health effects of the pepper gas exposure in non-combatant civilians.
This study is designed to evaluate the effect of GSK2339345 relative to placebo on the number of coughs in patients with Chronic Idiopathic Cough (CIC) administered by an Aqueous Droplet Inhaler (ADI). The primary aim is to investigate the efficacy of GSK2339345 on reducing objective cough frequency in CIC patients. The secondary aim of this study is to investigate the efficacy of GSK2339345 in inhibiting a hypertussive cough response elicited by capsaicin and citric acid in CIC patients which have a hyperresponsive cough reflex. Following the screening visit, all eligible subjects will attend the unit for dosing at Visits 1-7. At Visits 1, 2 and 3 (Part A of the study), subjects will receive two doses of either GSK2339345 or placebo, 4 hours apart and will undergo 8 hours of cough monitoring. At Visits 4 and 5 (Part B of the study) and Visits 6 and 7 (Part C of the study), subjects will be administered a single dose of either GSK2339345 or placebo. Subjects will then undergo capsaicin (Part B) or citric acid (Part C) tussive challenge and will undergo cough monitoring for 1 hour post dose. The maximum study duration will be approximately 11 weeks, including 3 weeks screening and 2 weeks follow-up. Approximately 30 patients will be randomised into the study, such that approximately 24 patients complete dosing and critical assessments.
Efficacy of proton pump inhibitor for chronic cough caused by gastroesophageal reflux; double-blind, placebo-controlled, randomized clinical trial
Cough is one of the most common reasons for consultation. Even if cough is a non-specific symptom, it can be the first sign of a chronic pathology. Several studies have demonstrated that chronic cough causes quality-of-life (QoL) impairment. Physicians' incapability to evaluate cough impact and patients' QoL has been documented. Therefore, a parent-proxy QoL chronic cough specific questionnaire (PC-QOL) has been developed and validated by Chang A. B. Objective : The aim of the study is to validate the French version of the PC-QoL, a parent-proxy QoL chronic cough specific questionnaire. Methods : Linguistic validation will be performed using backward/forward translation guidelines, and cognitive debriefing by 10 parents. Psychometric validation will be tested in 150 patients. Inclusion criteria are: patients with a diagnosis of chronic cough (> 4 weeks); 18 years of age or younger; all etiologies excepting cystic fibrosis. Informed consent from parents will be obtained. At enrollement, each parent will fulfill the PC-QOL questionnaire and two cough-related measures (visual analogue score, verbal category descriptive). Clinical data (medical history, physical examination) will be collected. Children QoL will be assessed using VSPA, Kidscreen and Qualin questionnaires. For assessing reproductibility and sensitivity to change, parents will be retested 7 and 21 days later. Content validity, construct's validity, external validity and instrument's reliability will be explored.