View clinical trials related to Asthma.
Filter by:Viral infections are the main cause of asthma attacks in preschoolers, an age group with the highest rate of emergency visits due to asthma. While high doses of inhaled or oral corticosteroids provide benefits, these have been associated with adverse outcomes. Most asthmatic children have lower blood levels of vitamin D compared to non-asthmatic children. Low vitamin D level has been linked to more frequent and more severe asthma attacks as well as with higher dose requirement of inhaled corticosteroid. Recent studies show that vitamin D supplements can reduce the number of asthma attacks triggered by viral infections in children. Unfortunately, most people forget to take vitamin D every day during the fall and winter season as recommended in Canada. A solution is to give a vitamin D bolus by mouth. This has been shown to safely and effectively increase vitamin D levels in children. The investigators hypothesise that a vitamin D bolus given in clinic will sufficiently increase the blood level of vitamin D to prevent the expected winter decline in vitamin D, compared with placebo in preschool-aged children with asthma. This six-month pilot randomized controlled trial aims to: (1) show that a vitamin D bolus is superior to placebo in raising vitamin D levels; (2) record the number of asthma attacks and viral infections in enrolled participants; and (3) identify problems that may call for protocol changes.
For many years, it is known that asthmatics have more often dysphonia. However, no study has so far analyzed the reality of dysphonia in asthmatic by making phoniatric tests. The etiology of dysphonia in asthmatic remains controversial. Indeed, for a long time, inhaled corticosteroids have been considered as responsible for organic abnormalities of the vocal cords. We hypothesized that women with asthma have more often dysphonia, and that dysphonia is rather functional origin.
The investigators hypothesize that school-based, direct supervision of daily controller therapy will result in more effective asthma control, as assessed by the Asthma Control Questionnaire than usual care. Additionally, as the result of enhanced asthma control and resulting decrease in health care utilization, school-based, direct supervision of daily controller therapy will result in lower cost per quality-adjusted life year (QALY) gained than usual care.
Pneumonia is the commonest cause of death in children worldwide, killing 1.5 million children under the age of 5 years, every year. This is more than the number of children dying from AIDS, malaria and tuberculosis combined. The current diagnostic and management protocols for managing serious respiratory diseases in children are 30 years old and are greatly in need of updating. The successful establishment of useful clinical management criteria for children with respiratory diseases will have benefits for children in low resource regions around the world. The goals of the study are: - To determine if children with respiratory distress can be reliably diagnosed under low-resource conditions. - To identify the clinical tests that best differentiate pneumonia from wheezy diseases. These will be used to establish updated diagnostic criteria for common pediatric lung diseases that broaden the current pneumonia algorithm by adding another for wheezy illnesses. - The ultimate objective is to improve the management and outcome of acute respiratory conditions in children. - Investigators also wish to test the efficacy of a locally developed cell phone oximeter probe in a low resource setting.
The purpose of this study is to evaluate the effects of a diet that is low in glycemic load and abundant in fiber, fruits, vegetables, legumes and omega-3 fatty acids ("anti-inflammatory diet") on pulmonary function in pediatric patients with asthma. The primary endpoint will be change in forced expiratory volume in one second in response to the diet intervention. Secondary outcomes will include additional spirometry measures, fraction of exhaled nitric oxide, and assessment of symptomatic asthma control. In addition, we will identify potential physiological mechanisms relating diet with lung function, including changes in systemic inflammation, insulin sensitivity, and intestinal microbiome composition.
This is a randomized, double-blind, double-dummy, placebo-controlled, three-way cross-over, single centre study in participants with asthma undergoing inhalation of methacholine and adenosine triphosphate (ATP) to assess the provocative concentration (PC20) response of two dose levels of gefapixant (AF-219) compared with placebo.
Immunoglobulin G deficiency subtypes in patients with asthma six months once a month intravenous immunoglobulin (400mg/kg/4weeks) infection in treatment-related effect on reducing the frequency of asthma exacerbations appreciate.
This randomized, multicenter, double-blind, placebo-controlled, parallel-group study will evaluate the efficacy of lebrikizumab compared with placebo, as measured by the ability of participants to achieve lower daily doses of OCS, among those with severe corticosteroid-dependent asthma. Prednisone/prednisolone will be the OCS therapy prescribed. Participants will be randomized to receive lebrikizumab or matching placebo for 44 weeks in a double-blind, placebo-controlled (DBPC) period. Those who complete the 44-week period may continue into a 32-week active treatment extension (ATE) period, during which all participants will receive lebrikizumab treatment. Following completion of the ATE period, participants who have both tolerated and derived benefit from treatment with lebrikizumab may continue their lebrikizumab treatment into a long-term extension (LTE) period. Participants will transition to 24 weeks of safety follow-up upon discontinuation of study drug.
The asthmatic airway is identified and studied using inhaled agents such as histamine and methacholine. The use of antihistamines prior to the test will inhibit the test result if histamine is used to cause airway constriction. If using methacholine, this may also be true depending on whether old (e.g. benadryl) or new (e.g. desloratadine) antihistamines are used. This study will look at the effect of old and new antihistamines on inhaled methacholine challenge response in individuals with mild asthma.
The purpose of this study is to determine whether a pedometer-based unsupervised exercise program is more effective than a general exercise recommendation to increase lifestyle physical activity in adult patients with asthma.