Active clinical trials for "Bronchiolitis"

This is a prospective, multicenter, observational study in participants who completed the 24-week, placebo-controlled MK-0476 Protocol 272 (NCT00076973) study of montelukast in the treatment of respiratory symptoms subsequent to RSV-induced bronchiolitis. The purpose of this study is to better understand the clinical and demographic correlates of asthma and atopic disorders in children (through the age of 6 years) with a history of severe RSV-induced bronchiolitis.

The epidemiological characteristics of RSV bronchiolitis differ between tropical and temperate zones. This study seeks to understand which climatic factors could influence the specific seasonality of these bronchiolitis in Martinique and to verify the hypothesis put forward: influence of favorable climatic conditions in the month preceding the start of the epidemic. In addition, the study will improve our knowledge of the epidemiology of the infection in order to improve the management of infants.

Bronchiolitis is the leading cause of pediatric intensive care unit admission in infants. Seizures during bronchiolitis may be a neurological complication of respiratory viruses but also of the treatments. The investigating team's hypothesis is that the incidence of seizures is not so so uncommon in infants hospitalized in the pediatric intensive care unit for severe bronchiolitis.

Evaluation of Wang's score as a predictor of the duration of oxygen therapy in bronchiolitis

The purpose of this research study is to better understand the onset and course of graft versus host disease (GVHD)and other immune-mediated disorders after stem cell transplant.

The investigators plan to study the variability of lung function parameters and bronchial inflammatory markers in 20 patients with bronchiolitis obliterans at the age of 6 to 25 years compared with an age- and sex-matched control group. The investigators will perform a pulmonary function test (body plethysmography with TLCO), and measure the fraction of exhaled nitric oxide (eNO). Further a blood sample is drawn to determine the systemic inflammation. Finally induced sputum is collected and a cell count is performed, and cells and supernatants are analyzed for inflammatory markers. This investigation will be repeated after 4-6 weeks. The aim of this study is to define baseline values and the variability of possible outcome parameters for future interventional studies.

A cohort observational study to characterise baseline Structured Light Plethysmography (SLP) outputs in infants with bronchiolitis and examine response to treatment using the Thora3DiTM

Abnormal respiratory sounds (wheezing and/or crackles) are diagnosis criteria of acute bronchiolitis. One third of these infants will develop recurrent episodes, leading to the diagnosis of infant asthma. Nowadays, no available treatment shortens the course of bronchiolitis or hastens the resolution of symptoms, thus, therapy is supportive. Our hypothesis is that the diagnosis of wheezing during bronchiolitis (~60% of infants) will help to select infants who will benefit from anti-asthma therapy. In this setting the diagnosis of wheezing is crucial, and an objective tool for recognition of wheezing is of clinical value. The investigators developed a wheezing recognition algorithm from recorded respiratory sounds with a Smartphone placed near the mouth (Bokov P, Comput Biol Med, 2016). The objectives of the present cross sectional, observational study are 1/ to further validate our approach in a larger sample of infants (1 to 24 months) admitted to hospital for a respiratory complaint during the period of viral bronchiolitis, and 2/ to use gold standard diagnosis of wheezing by respiratory sound recording (Littmann) and subsequent analysis by two experienced pediatricians.

Bronchiolitis is a potentially severe infection of the airway in infants and children, and among the most frequent diagnoses leading to pediatric intensive care unit admission in infants. This acute infection is caused by an array of viruses, but respiratory syncytial virus (RSV) is the most frequently implicated. The majority of infants hospitalized with bronchiolitis are previously healthy, and half of infants intubated and mechanically ventilated for respiratory failure due to RSV bronchiolitis have no previously identified risk factors. It is likely, therefore, that other factors, particularly genetic heterogeneity of the host, contribute to disease severity. However, no previous study has investigated the association of genetic variants with respiratory failure in children with bronchiolitis. Several categories of candidate genes have emerged as potentially important in the pathogenesis of the disease. Specifically, genetic polymorphisms of surfactants, pattern recognition receptors, receptor adhesion molecules, and cytokines have been examined. The aim is to evaluate these polymorphisms to determine their association with respiratory failure in a cohort of more severely ill children with bronchiolitis.

Sputum specimens will be obtained from children < 2 years of age and processed by different mode for the HMPV, RSV, Pertussis, Influenza A, B, Parainfluenza 1,2,3, Adenovirus. Clinical and epidemiological data will also be obtained.