View clinical trials related to Respiratory Failure.
Filter by:During general anesthesia, functional residual capacity (FRC) is reduced. If the FRC is lower than the minimum volume required to maintain the opening of the airways, there is a derecruitment of the lung parenchyma, leading to the phenomenon of expiratory flow limitation (EFL). The Driving Pressure (DP) is the difference between the plateau pressure (Pplateau) and the Positive End-Expiratory Pressure (PEEP), and estimates the lung strain. The incidence of EFL and the importance of DP are not known in adult cardiac surgery, so it's necessary a study to assess both. The primary end-point of the study is to evaluate the correlation of DP and EFL with PPCs in adult cardiac surgery. The secondary end-point of the study is to evaluate: the mechanical ventilation time, the length of ICU and hospital stay, the rehospitalization and mortality. It will be a prospective, observational, non-pharmacological study. It will enroll 200 patients undergoing elective adult cardiac surgery.
This study will compare the novel methods of NS and BS with the standard technique of nasophayngeal aspiration (NPA) and routine ETT suction. We shall assess the samples for diagnosis of RSV, viral load and immune responses in the airways of babies with RSV infection. We shall also assess the genetics of babies included in this study, to see if they may be vulnerable to RSV infection.
Complications are common during endotracheal intubation of critically ill adults. Manual ventilation between induction and intubation ("bag-valve-mask" ventilation) has been proposed as a means of preventing hypoxemia, the most common complication of intubation outside the operating room. Safety and efficacy data, however, are lacking. PreVent is a randomized trial comparing manual ventilation between induction and laryngoscopy to no manual ventilation between induction an laryngoscopy during endotracheal intubation of critically ill adults. The primary efficacy endpoint will be the lowest arterial oxygen saturation. The primary safety endpoints will be the lowest oxygen saturation, highest fraction of inspired oxygen, and highest positive end-expiratory pressure in the 24 hours after the procedure.
Patients with tracheostomy who are on and off of mechanical ventilation initially lose the ability to speak, and the use of one-way speaking valves (OWSV) is one method of restoring speech in these patients. Patients with tracheostomy who experience loss of speech report frustration and feelings of confinement from patients' communication impairment, therefore investigators would like to restore speech in these patients as soon as it is safe to do so. However, there is currently little known in the literature about the timing of the use of OWSV in patients with tracheostomy. Therefore, the investigators propose a pre-test post-test clinical trial pilot study to investigate the safety of early use of OWSV in patients undergoing a percutaneous tracheostomy. Study aims are to identify patients who would benefit from the early use of OWSV and to determine the effects of early use of OWSV on speech and clinical outcomes. To achieve these aims, patients who undergo percutaneous tracheostomy will be screened, and patients meeting screening criteria will be randomized into intervention and control groups. The intervention group will receive early speech-language pathology (SLP) evaluation and OWSV trial at 12-24 hours following tracheostomy procedure, and the control group will receive standard SLP evaluation and OWSV trial at 48-60 hours following tracheostomy procedure. Intervention and control groups will been compared on speech and clinical outcomes measures from pre-test at 12-24 hours following tracheostomy and post-test at 48-60 hours following tracheostomy and characteristics of patients who successfully tolerate early OWSV use will be identified.
The study investigates the influence of a clinically indicated fluid challenge on end-expiratory lung impedance, assessed by electrical impedance tomography (EIT). EIT data will be collected before, during and after infusion of 500 ml of crystalloid solution in mechanically ventilated patients on an operative intensive care unit.
The purpose of this study is to find out weather differences in administration nebulizer technology (Jet nebulizer VS. mesh nebulizer) will have impact on lung mechanic variables (Compliance, resistance and PEEPi) during controlled mechanical ventilation.
Estimate if the use of a portable cardiac echograph for intra-hospital Emergencie improves the performances diagnose in the bed of patient in department of conventional medicine. The concordance between the initial medical diagnosis (previous the utilsation of portable echograph) and the final diagnosis (after portable echograph utisation) will be evaluated. These evaluation will be performed after retrospective review of the medical files
Retrospective multicentric observational study exploring the population of adult neuromuscular patients presenting a respiratory distress requiring their admission in an Intensive Care Unit (ICU) for ventilatory support. Research of markers associated with long term mortality and ventilatory status.
The purpose of this study is to compare the effect of continuous positive airway pressure (CPAP) delivered by the variable generator WhisperFlow System with high flow nasal cannula oxygen therapy in mechanically ventilated patient who are at risk for postextubation failure.
Background. Non invasive positive pressure ventilation (NIV) is among first line treatments of acute respiratory failure. Several interfaces are available for non-invasive ventilation.Despite full face and oronasal masks are more frequently used, some evidence suggests that helmets may optimize patients' comfort and NIV tolerability. During NIV, humidification strategies (heat and moisture exchangers HME or heated humidifiers HH) may significantly affect patient's comfort and work of breathing. Despite physiological data suggested heated humidification as the best strategy during NIV with full face masks, no differences were found in a randomized controlled study assessing the effects of HME or HH on a pragmatic clinical outcome. However, the higher dead space (i.e. 18 L/min) and rebreathing rate observed during helmet NIV make such results not applicable to this particular setting. The investigators designed a randomized-crossover trial to assess the effect of four humidification strategies during helmet NIV on patients with acute respiratory failure, in terms of comfort, work of breathing and patient-ventilator interaction. Methods. All awake, collaborative, hypoxemic patients requiring mechanical ventilation will be considered for the enrollment. Hypercapnic patients (i.e.PaCO2>45 mmHg) will be excluded. Each enrolled patient will undergo helmet NIV with all the following humidification strategies in a random order. Each period will last 60 minutes. - Passive humidification, double tube circuit. - Heated humification (MR 730, Fisher & Paykel, Auckland, New Zealand), humidification chamber temperature 33°C. - Heated humification (MR 730, Fisher & Paykel, Auckland, New Zealand), humidification chamber temperature 37°C. - Passive humidification with HME, Y-piece circuit. Ventilatory settings (Draeger Evita xl or Evita infinity ventilators): Pressure support ventilation; pressure support=20 cmH20; FiO2 titrated to obtain SpO2 between 92 and 98%; positive end-expiratory pressure=10 cmH2O; maximum inspiratory time 0.9 seconds; inspiratory flow trigger = 2 l/min; expiratory trigger: 30% of the maximum inspiratory flow; pressurization time=0,00 s. Such settings will be kept unchanged during the whole study period. An oesophageal catheter will be placed and secured to measure oesophageal pressure (Pes) and gastric pressure (Pga) (Nutrivent, Italy): the reliability of the measured pressure will be confirmed with an airway occlusion test during NIV with oronasal mask. Work of breathing will be estimated with the pressure-time product (PTP) of the pleural pressure. A pneumotachograph (KleisTek) will record flow, airway pressure, Pes and Pga on a dedicated laptop. At the end of each cycle, the patient will be asked to rate his/her discomfort on a visual analog scale (VAS) modified for ICU patients. The level of dyspnea will be assessed with the Borg dyspnea scale. The following parameters will be record at the end of each cycle: Arterial pressure, heart rate, respiratory rate, SpO2, pH, PCO2, PaO2, SaO2. Airway and esophageal pressure signals will be reviewed offline to detect patient-ventilator asynchronies (ineffective efforts, double cycling, premature cycling, delayed cycling) and asynchrony index (number of asynchrony events divided by the total respiratory rate computed as the sum of the number of ventilator cycles (triggered or not) and of wasted efforts) will be computed. The trigger delay will be also measured. The pressurization and depressurization velocity will be assessed with the PTP airway index 300 and 500 (inspiratory and expiratory), as suggested by Ferrone and coworkers. The work of breathing (WOB) for each breath will be estimated by PTPes. An hygrometer (Dimar SRL, Italy) will measure and record on a dedicated laptop Helmet temperature, relative and absolute humidity. Primary endpoints: patient's comfort, work of breathing and asynchrony index. Sample Sizing: Given the physiological design of the study, the investigators did not make an a priori sample size and plan to enroll 24 patients.