Active clinical trials for "Respiratory Tract (Lung and Bronchial) Diseases"

The co-primary objectives of this study are to: Determine and compare the COVID-19 antibody positivity rate in health care workers and patients without a known COVID-19 infection Determine if PCR negativity for COVID-19 early in quarantine predicts negativity at Day 14 in quarantining individuals

Canada is entering the important yet dangerous phase of the COVID-19 pandemic: the reopening of industry. As such, there is an urgent need for a quick and accurate screening tool to help ensure people re-entering the workplace are COVID-19 negative. This proposal offers an innovative, simple-to-implement and quick screening tool for this purpose. This study hypothesize that breathing sounds of a COVID-19 positive person would have different characteristics even if the person is asymptomatic. This study aim the development of an integrated diagnostic pattern recognition tool in the form of a smartphone app, using audio and temperature as inputs to identify COVID-19 positive individuals. The proposed digital technology will screen individuals as healthy or possibly COVID-19 positive. The latter group will then be recommended for further testing. The goal of the proposed app is to provide much more accurate early screening (currently only temperature is taken), and to reduce the burden of COVID-19 tests. This digital technology will be used and tested in Manitoba initially and later nationally in Canada, with the potential of being publicly available in the future. To use the proposed screening tool, a smartphone is held within 1 cm of an individual's mouth and the individual instructed to take five deep breaths through the mouth. The individuals' breathing sounds will be recorded by the smartphone, while the participant's temperature will also be recorded by the heat camera. The app will first use its acoustic analysis to identify sounds as healthy or abnormal. If the outcome is abnormal, then a questionnaire will be provided, along with a further acoustic analysis to rule out other common comorbid conditions (e.g. chronic lung disease). Finally, based on the inputs, the diagnostic algorithm will decide if the individual should be referred for further testing or not. Since the proposed end product is a smartphone app, the two software partner companies will play a crucial role in the final integration and development.

Asthma is the most common chronic disease in children, however, underdiagnosis of childhood asthma is an important issue in asthma management. The lack of reliable and objective diagnostic indicators requires the development of rapid and accurate strategies for the early diagnosis of childhood asthma. Recent studies have found a correlation between long-chain non-coding RNA (lncRNA) expression and childhood asthma, suggesting that lncRNA may be a potential biomarker for asthma diagnosis.

This is an observational, descriptive, open-label, prospective, 6-month study including a group of patients with a first prescription of IND/GLY/MF with sensor and a group with a first prescription of IND/GLY/MF without sensor.

The objective of the present study is to describe the negative impact on oral and gut microbiota of a severe acute respiratory syndrome SARS-CoV-2 infection in patients hospitalized in intensive care units (ICU). The study would like to compare their microbiota to the microbiota of ICU patients, non-infected by the SARS-CoV-2.

For this study the investigators are looking to do the following: To characterize human lung lesions by nonlinear microscopy using ex vivo tissues. To establish the first spectral/structural database for nonlinear optical microimaging of normal and abnormal lung tissue.

The purpose of this study will be to evaluate the measurement of tricuspid annular plane systolic excursion (TAPSE) by emergency physician performed echocardiogram on patients with suspected pulmonary embolism (PE) who are scheduled to get a computed tomography of the pulmonary arteries (CTPA)

The purpose of this study is to determine the predictive factors of poor compliance to sleep disordered breathing therapy in chronic heart failure patients treated for central sleep apnea. To characterize nocturia pathophysiology associated with SDB in this population. To use telemonitoring data to define predictive factors of poor compliance.

The diagnosis of idiopathic pulmonary fibrosis (IPF) is currently one of the most common diagnoses for patients under evaluation for lung transplantation. In recent years, an absolute increase in prevalence/ incidence of IPF has been observed. There is evidence that patients with IPF on waiting list for lung transplantation might benefit from pirfenidone treatment. Until now, no data are published regarding this important issue in lung transplantation. Primary objective is to determine whether there is a difference in the duration time of mechanical ventilation (weaning) directly after lung transplantation between patients treated with pirfenidone and patients without pirfenidone treatment. The Secondary objectives are to determine whether there are differences between the pirfenidone treatment group and the control group regarding survival after LUTX, the score on the Saint Georges Respiratory Questionnaire and the decline in forced vital capacity (FVC%) In this Investigator initiated, non- interventional single center study , patients on the waiting list for transplant pirfenidone treatment receive oral pirfenidone at the standard dose of 2403 mg per day. The treatment duration will range from 6 to 12 months. A control group will be used to correlate the outcome-parameters for a descriptive comparison. The control group includes patients with IPF on the waiting list who were on another IPF specific (or no) treatment for IPF The Study Population are Patients aged between 40-70 years who are admitted to the lung transplantation department and fulfill the international criteria for idiopathic pulmonary fibrosis ( existence of a usual interstitial pneumonia (UIP) pattern in the high-resolution computed tomography (HRCT) is necessary). Variables: Duration of mechanical ventilation after LUTX (hours), Forced Vital capacity relative to reference value at baseline (FVC0%), Forced Vital capacity relative to reference value after 6 months (FVC6%),Forced Vital capacity relative to reference value after 12 months (FVC12%) Study Size: 30 patients in the Pirfenidone group, 20 patients in the control group. For the primary Endpoint, the mean, standard deviation, median, minimum and maximum of the weaning time of patients who received a pirfenidone treatment, as well as of patients from the control group will be computed and presented in a table. Additionally, a Kaplan-Meier curve will be estimated and plotted alongside the respective 95% CI calculated using the method of Brookmeyer and Crowley. Furthermore, a stepwise linear regression using forward selection and Age, RBMI, FVC0%, (FVC6%-FVC0%), TLC, FEV1% and ECMO, as well as the pirfenidone treatment as predictors will be computed. The null hypothesis is that the pirfenidone treatment has no influence on the weaning time. The according model coefficient estimate and standard error will be used to test the null hypothesis using a t-test at significance level α=0.05. For the secondary endpoints, the mean, standard deviation, median, minimum and maximum of patients who received a pirfenidone treatment, as well as of patients from the control group will be computed and presented in a tableStepwise Cox Regression using forward selection and Age, RBMI, FVC0%, (FVC6%-FVC0%) and ECMO, as well as the pirfenidone treatment as predictors will be computed in order to compare the treatment and the control group a . If p-values are calculated for the secondary endpoint analysis, they serve only descriptive purposes. Therefore no multiple testing corrections are applied.

The aim of this prospective single-center study is to evaluate sympathetic nervous system directly measured by microneurography, 24-hour blood pressure, endothelial function, vascular compliance, quality of life and platelet adhesion in patients with sleep apnea syndrome (defined by a complaint of excessive daytime sleepiness, an Epworth sleepiness score>8[10], and an apnea/hypopnea index (AHI>15/h) before and after catheter-based radiofrequency ablation of renal nerve. If the selected patients are treated with CPAP, this therapy should be stable during the whole study time. Primary and secondary end-point will be measured before and 1, 3, 6 and 12 months after renal sympathetic denervation.