View clinical trials related to Pulmonary Valve Insufficiency.
Filter by:Hematopoietic stem cell transplantation (HSCT) is used to treat an expanding array of malignant and non-malignant disorders. This is a prospective multicenter study, in pediatric allo-BMT recipients to analyze the spectrum of noninfectious pulmonary complications (PC), to evaluate the prevalence and course of PFT abnormalities before and after transplant, and to detect risk factor for PC.
Patients with underlying neuromuscular disorder (NMD) often suffer from weakness in the inspiratory and expiratory muscles. Consequently they do not have the strength to generate the minimum flow of 160 to 300 liters/minute for an efficient cough function. The restricted cough function allows secretion to accumulate, which in turn causes narrowing of the airway lumen and makes ventilation of the neuromuscular patient even more difficult. The patient's susceptibility to infection increases again and the vicious circle repeats itself. Severe secretion retention may even lead to ventilator failure. Effective secretion and cough management instead reduces the risk for stay in hospital. Therefore, secretion and cough management is a mandatory part of the therapeutic concept for treating patients with neuromuscular disease. The therapeutic efficacy of the Lung Insufflation Assist Maneuver(LIA) integrated in the ventilator VENTIlogic LS-plus manufactured by Weinmann GmbH+Co KG was studied in a pilot study carried out by the Dep. for Pediatric Pulmonology and Sleep Medicine at the University Hospital of Essen/Germany in cooperation with Research & Development at Weinmann GmbH &Co KG, Germany . The objective of the pilot study was to examine the therapeutic efficacy of LIAM as a cough support function in patients with neuromuscular disease and indications for mechanical ventilation. We hypothesized that i) a certain insufflation maneuver pressure may be optimal to achieve the highest individual peak cough flow and ii) that this pressure is below the pressure needed to achieve the maximum insufflation capacity. We define the lowest insufflation capacity at which the best individual PCF can be achieved as optimum insufflation capacity (OIC). The study was performed using two different techniques in order to demonstrate that findings are not dependent on maneuver details but are rather based on effects of maneuver pressure. The protocol was limited to techniques which do not require breath stacking: i) insufflation with an Intermittend Positive Pressure (IPPB) device and ii) with the VENTIlogic LS using LIAM.
In physiological conditions, spontaneous ventilation is controlled by blood carbon dioxide (and pH) levels. In healthy animals, extracorporeal carbon dioxide removal leads to hypoventilation or apnea (Kolobow et al., 1977). During acute respiratory insufficiency, extracorporeal carbon dioxide removal may be used to control spontaneous ventilation, limiting risks of lung damage and relieving dyspnea (Crotti et al., 2012). However, little is known about how spontaneous ventilation changes in response to changes in extracorporeal carbon dioxide removal during acute respiratory insufficiency, especially in humans. Aim of this study is to monitor changes in spontaneous ventilation in awake patients treated with extracorporeal gas exchange support because of acute respiratory insufficiency, in response to changes in extracorporeal carbon dioxide removal.
Respiratory failure after extubation is a relevant consequence of poor airway clearance due to respiratory muscle weakness and respiratory failure after extubation and reintubation is associated with increased morbidity and mortality. the study will evaluate the contribution of Mechanical Insufflation-Exsufflation (MI-E) in Preventing Respiratory Failure After Extubation as compared manually assisted coughing
The purpose of the study is to compare the pharmacokinetics of nebulized amikacin administered with three vibrating mesh nebulizers coupled with a single limb circuit bilevel ventilator in healthy volunteers. Following our previous in vitro study, our hypotheses are that the pharmacokinetics varies among the devices tested and that a most efficient device can be identified.
The Covered Cheatham-Platinum Stent (CCPS) is being study for repair of tears that occur in the pulmonary artery during dilation (enlargement) of a conduit (passageway) connecting the right ventricle of the heart to the pulmonary arteries. Patients undergoing replacement of their pulmonary valve by transcatheter technique Melody Valve) are at risk of developing such tears in the process of preparing the conduit to accept the new valve. In order to implant such a valve, the connection between the right ventricle and the pulmonary arteries often needs to be enlarged. High pressure balloons may be needed and these balloons can sometimes cause tears in or even rupture of the connecting conduit. Such tears can allow blood to flow into the chest and rarely this can lead to a life-threatening emergency. Experience suggests that such tears can be closed by implanting into the conduit a metallic stent with an outer covering, rebuilding the wall and allowing continuation of the valve implant.
The study´s intention is to evaluate the feasibility, safety and effectiveness of a pump driven extracorporeal device for removal of carbon dioxide from the blood in oder to avoid intubation and invasive mechanical ventilation in patients with acute respiratory failure retaining carbon dioxide due to the failure of their ventilatory muscle pump and not responding to prior non-invasive mask ventilation.
The hypothesis of this study is that respiratory physiotherapy can promote improvement in respiratory mechanics in children with respiratory failure and the bag squeezing maneuver is more effective in improving respiratory mechanics in childrens and does not alter the hemodynamic proved safe
To determine the morbidity and mortality of patients who have undergone percutaneous tracheostomy due to respiratory failure in the critical care unit and after intensive care in the internal medicine department, including follow-up of quality of life of these patients.
Objectives 1. To characterize mechanical ventilation practices during general anesthesia for surgery 2. To assess the dependence of intra-operative and post-operative pulmonary complications on intra-operative Mechanical Ventilation (MV) settings