View clinical trials related to Respiratory Aspiration.
Filter by:Currently, measurement of transdiaphragmatic pressure (Pdi) using oesophageal and gastric balloons is the gold standard for the assessment of diaphragmatic effort. This technique is relatively invasive and its interpretation may be complex. The diaphragmatic longitudinal strain (LSdi) and strain rate (LSRdi) might provide additional information in the assessment of diaphragmatic effort and movement during SBT, allowing early detection of diaphragmatic dysfunction. Patients will be monitored during a 30-120 minutes SBT consisting of no assistance on the ventilator using CPAP with a pressure level of 0 cmH2O. Parameters to evaluate diaphragm function will include diaphragmatic strain (LSdi and LSRdi), diaphragmatic thickening fraction (TFdi), and airway occlusion pressure (ΔP0.1 and ΔPocc). These parameters will be measured immediately before ('baseline') the SBT, as well as 2 minutes ('early' assessment), 15 ('intermediate' assessment) and 30 minutes ('late' assessment) after the beginning of the SBT.
The aim of this randomised controlled trial is to compare the effects of an antenatal education class including a breathing and relaxation technique on self-efficacy compared to a standard antenatal education class without a focus on breathing and relaxation techniques.
Inhalation injury is a composite of multiple insults including: supraglottic thermal injury, subglottic airway and alveolar poisoning, and systemic poisoning from absorbed small molecule toxins. These contaminant insults independently affect each of the pulmonary functions as well as having a direct effect on systemic physiology. Further, anatomic characteristics can predispose patients to inhalation injury. For example, an infant will develop airway obstructions much faster than an adult due to reduced airway diameter. Understanding the contributions of each of these pathologies to the patient's disease is critical to managing inhalation injury.
Pressure support ventilation (PSV) is an assisted mechanical ventilation mode that provides synchronous inspiratory support for patients with spontaneous breathing. PSV divides the work involved in producing ventilation between the ventilator and the patients. The patient inspiratory effort needs close monitoring to avoid inappropriate assistance and maintain favorable patient-ventilator interaction during PSV. Esophageal pressure (Pes)-derived parameters are regarded as golden indicators of inspiratory effort. Based on this precondition, the fraction of PTP generated by the patient during PSV (PTP ratio) can evaluate the inspiratory contribution proportion of ventilated patients with spontaneous breathing. Inspiratory muscle pressure index (PMI) was confirmed to be associated with inspiratory effort and can effectively predict low/high effort. The study tries to explore the relationship between PMI and PTP ratio and find the optimal cut-off value of PMI to predict different PTP ratios. Second, investigators want to verify the safety and validity of PMI-guided PS settings for pressure-support ventilated patients.
The goal of this prospective interventional crossover randomized physiological study is to investigate the reliability of Pressure Muscle Index (PMI) - as an estimation of inspiratory effort - at different levels of expiratory cycling during pressure support ventilation. PMI will be compared with the esophageal pressure swing that is considered the gold standard technique. This study aims to answer to the following questions: - which is the optimal expiratory cycling threshold where PMI better correlates with the esophageal pressure swing? - what is the optimal correlation between the occlusion pressure (Poc) estimated by an expiratory occlusion manoeuvre and P0.1 with PMI obtained at various degrees of expiratory cycling threshold? - does airway resistance - evaluated by using esophageal pressure - correlate with the estimation of airway resistance on the pressure-time waveform by a high percentage of expiratory cycling mimicking the interrupter technique?
The goal of this multicentre, randomized and controlled cross-over trial is to evaluate the efficacy of a programme of Inspiratory Muscle Training in subjects with Late On-set Pompe Disease (LOPD). The main question is to: - verify changes in Forced Vital Capacity, Postural Drop, Maximal Inspiratory Pressure, Maximal Expiratory Pressure, Peak expiratory cough pressure, Maximal Inspiratory Capacity, six- minute walk test and or 6-minute pegboard ring test.- - measure changes in some questionnaries investigating dispnoea and quality of life (Short-Form 36, Individualized-Neuromuscular-Quality-of-Life, Maugeri-Respiratory-Failure 28, Borg scale, Dispnoea 12, Mulditimensional Dispnea Profile, modified Medical Research Council, Fatigue Severity Scale, Epsworth Scale, Visual Analogue Scale). Measurement will take place at baseline and after one, three, four, six and twelve months. Participants will undergo a specific treatment consisting of aerobic exercise and Inspiratory Muscle Training with Powerbreathe device or Air-Stacking. Researchers will study if Powerbreathe device is more effective than Air-stacking maneuvres
It is critical to maintain a relatively normal inspiratory effort during pressure support ventilation (PSV), the support level should be adjusted to match the patient's inspiratory effort. The inspiratory muscle pressure index (PMI) can reflect the elastic work of the respiratory system at the end of inspiration and has a significant correlation with inspiratory effort, and it has the outgoing advantages of being non-invasive and easy to obtain. Previous studies on PMI were based on physiological research and experimental conditions (PMIref), which require special pressure monitoring devices and software to collect and measure airway pressure. If PMI is going to be used in clinical practice, it is necessary to find a simple measurement method of PMI to replace PMIref. Most ventilators have airway pressure monitoring and end-inspiratory holding functions, and PMI can be measured by freezing the ventilator screen (PMIvent). The overall aim of this study was to determine PMIvent's clinical feasibility and validity for accessing inspiratory effort during PSV.
From a clinical perspective, we find that many patients with Post COVID condition suffer from severe and debilitating shortness of breath, while routine pulmonary investigations fail to find the cause of the problems experienced. If dyspnea is associated with palpitations, dizziness or anxiety, patients are commonly diagnosed with "dysfunctional breathing". From a psychosomatic perspective, the symptom of dysfunctional breathing can be classified as a "functional symptom" under the umbrella term of somatic symptom disorder. Therefore, Yoga interventions with special emphasis on breath-guided relaxation are a promising approach. We aim to investigate the psycho-somatic and somato-psychic pathophysiology on a morphological, psychological, functional and biological basis underlying the symptom of dysfunctional breathing. Furthermore, we plan to investigate the mechanism of Yoga intervention on the mental and somatic symptom burden of participants with Post COVID condition. Then, we aim to compare the impact of Yoga on other groups - healthy individuals, patients with chronic obstructive lung disease (COPD), as well as those with somatic symptom disorder. As a control intervention to Yoga guided breathing exercises a social contact group will be used.
The study aims to investigate how slow breathing with prolonged exhalation (i.e., ProlEx breathing) modulates decision-making under risk in healthy participants. To do this, a short-term breathing intervention is combined with a decision-making paradigm while neural, physiological, and behavioral data are recorded.
The aim of the project is to determine whether nasal inspiratory peak flow is sufficient for preoperative and postoperative measurement of nasal patency compared to rhinomanometry.