View clinical trials related to Lung Injury.
Filter by:The aim of this study is to collect synchronized data from multiple monitoring techniques of mechanical ventilation (pressure/flow waves from the ventilator, electrical impedance tomography - EIT, esophageal pressure, capnography) in patients ventilated either on intensive care units or during anesthesia and evaluate the data by detailed mathematical analysis, to test three hypotheses: 1. Various published methods of calculation of the expiratory time constant provide different results in most cases. 2. Inhomogeneous ventilation (as described by EIT) affects the form of the expiratory flow curve and thus the calculated expiratory time constants. 3. The calculation of mechanical energy transferred to the lungs is affected by the chosen technique and length of the inspiratory pause maneuver. This study does not test any new or non-standard methods and does not in any way interfere with the course of treatment indicated by the clinician, apart from extending the monitoring techniques.
Fiberoptic bronchoscopy (FOB) is one of the most useful procedures for diagnosing and treating respiratory illnesses to figure out symptoms like hemoptysis, wheezing, or cough. Furthermore, FOB is a frequent method, in intensive care units, for both diagnoses of ventilator-associated pneumonia (VAP) and treatment of atelectasis with bedside sedation.) Propofol is often used in anesthesia for endoscopic treatments. Using propofol for deep anesthesia may be indicated to prevent the patient from feeling discomfort before FOB and to reduce the chance of complications. Although major complications of FOB such as hypoxia and pneumothorax are known, there are limited studies showing its effects on cardiac hemodynamics. The cardiac effects of laryngoscope and intubation were investigated by using different anesthetic agents. In this study, we evaluated the effect of bronchoscopy with BIS-controlled sedation on ECG in ICU patients by monitoring the QT interval and P interval.
Respiratory failure occurs when the lung fails to perform one or both of its roles in gas exchange; oxygenation and/or ventilation. Presentations of respiratory failure can be mild requiring supplemental oxygen via nasal cannula to more severe requiring invasive mechanical ventilation as see in acute respiratory distress syndrome (ARDS).It is important to provide supportive care through noninvasive respiratory support devices but also to minimize risk associated with those supportive devices such as ventilator induced lung injury (VILI) and/or patient self-inflicted lung injury (P-SILI). Central to risk minimization is decreasing mechanical stress and strain and optimizing transpulmonary pressure or the distending pressure across the lung, minimizing overdistention and collapse. Patient positioning impacts ventilation/perfusion and transpulmonary pressure. Electrical impedance tomography (EIT) is an emerging technology that offers a noninvasive, real-time, radiation free method to assess distribution of ventilation at the bedside. The investigators plan to obtain observational data regarding distribution of ventilation during routine standard of care in the ICU, with special emphasis on postural changes and effects of neuromuscular blockade, to provide insight into ventilation/perfusion matching, lung mechanics in respiratory failure, other pulmonary pathological processes.
This is a research study to determine if identifying an optimal level of positive end-expiratory pressure (PEEP) targeted specifically to individualized patient characteristics will shorten the time on the ventilator. Participants will have catheter placed through the nose into the esophagus to measure the pressure inside the chest. This catheter will remain until the patient is freed from the ventilator. Participants will be randomized to usual care or to have the level of PEEP determined by the esophageal balloon pressure readings. The total time spent on the ventilator will be recorded.