Active clinical trials for "Respiratory Aspiration"

Background: The gas mask is used to protect the aiways against respiratory hazards (CBRN agents). Within the CBRNE committee, speculations are that unprotected lungs would look like to those of COPD patients in post-exposure of some CBRNE agents. The aim of the study was to evaluate the impact of the gas mask on respiratory patterns and indexes of the respiratory effort. Methods: We are completing our study with 9 COPD patients to evaluate breathing patterns, index of respiratory efforts and blood gases. Three conditions have been tested in a randomized order: 1x baseline and 2x different canisters, with and without a mask (C4, Airboss Defence, Bromont, Canada). Airway pressure, inspiratory and expiratory flows have been measured. An esophageal catheter is introduced at the beginning of the study to measure esophageal pressure (Peso) and calculate indexes of respiratory effort (PTPeso, WOB). SpO2 is continuously measured and capillary blood bases are drawn at the end of each condition. Each condition lasts 10 minutes, data of the last 2 minutes at a steady state are considered for analyses. Results. We are compiling data and processing them for analysis.

This study evaluates the implementation of an education protocol and its impact on the correct inhalation technique in COPD patients presenting errors or mistakes. There will be 4 sessions, in each one the inhalation technique will be evaluated using a checklist of steps. Whenever errors are found, the correct use of each device will be educated through verbal explanation and written material will be delivered.

This study analyzes the prevalence of patients using inhalation devices via incorrect technique and access the adherence of patients to correct inhalation technique when taught along with their subjective improvement of symptoms.

In France, the most used humidifying system during oxygen therapy is a non heated device with weak efficiency and non-proven clinical benefits. This study aims to assess the lack of benefits of non-heated humidification compared to no humidification, as regards to the comfort of the patient receiving oxygen therapy.

Exposure to combustion-derived fine particulate air pollution is associated with cardiovascular mortality and morbidity. In previous studies, exposure to diesel exhaust (a major constituent of urban particulate air pollution) has been shown to impair two important functions of the vascular endothelium: vascular vasomotor function and endogenous fibrinolysis. Our subsequent studies suggest this impairment of vascular function is mediated by a reduction in nitric oxide bioavailability. In this study we aim to investigate the cardiovascular responses to systemic nitric oxide synthase inhibition following exposure to dilute diesel exhaust.

The purpose of this study is to investigate the time course of PF-04764793 concentration in the blood following dosing by oral inhalation from dry powder inhalers.

The purpose of this study is to determine the inflammatory response to 20,000 endotoxin units (EU) of CCRE (Clinical Center Reference Endotoxin) inhalation in a cohort of healthy volunteers. Preferably these subjects will have participated in ozone exposure studies, allowing a direct comparison of their responses to both endotoxin and ozone. Additionally, cardiovascular endpoints will be investigated with the CCRE exposure.

In Europe, hydroxocobalamin (cyanokit) has been used for suspicion of cyanide intoxication associated with the inhalation of fire smoke (1). However, the impact of hydroxocobalamin on outcome has never been thoroughly evaluated. While hydroxocobalamin has long been presented as being side-effect free, recent data suggest that in patients with severe burns, its use was associated with the occurrence of acute renal failure by intra tubular precipitation of oxalate crystals (2, 3). The purpose of this observational study is to investigate the association between use of hydroxocobalamin and outcome after smoke inhalation.

The study is a pre-post test with quasi experimental design. Forty-two intubated-adults who had been mechanically ventilated for more than 21 days were selected on the basis of inclusion criteria in respiratory care ward. These patients were classified equally into study group and control group. The experimental group received the intervention of respiratory muscles training 5 times/ a week for 6 weeks. The control group received normal care. The intervention was adjusted trigger sensitivity to 10% of the first recorded Maximal Inspiratory Pressure at the start of training, then increased the ventilator trigger sensitivity and training duration weekly. The largest of ventilator trigger sensitivity is not over 40% of the initial Maximal Inspiratory Pressure and the timing of training duration is no longer than 30 minutes.

In a prospective observational study, the investigators investigate the prevalence of sleep disordered breathing in patients with severe valvular regurgitation and the effect of using the minimal invasive Clip technique on sleep disordered breathing.