View clinical trials related to Airway Obstruction.
Filter by:The purpose of this study is to compare the effect of mandibular advancement bite block and high flow nasal cannula to standard bite block for oxygenation, capnographic measurement, prevention of hypoxemia, intervention events and adverse effects during endoscopic examinations.
Prospective, observational, study that will examine if a sited supraglottic airway (the igel) will increase the accuracy of identifying the cricothyroid membrane in female patients. Consented patients that meet inclusion criteria are assessed by clinicians under general anaesthesia with and without a supraglottic airway in situ. The accuracy of CTM identification by palpation will be evaluated using ultrasound.
In a prospective, observational study the investigators compared resistance values measured using the airway perturbation device (APD) to impulse oscillometry and spirometry. The investigators also created reference equations for normal APD resistance ranges using the data from clinically normal volunteers.
Obstructive lung disease is an increasing global health problem of pandemic proportions, with COPD alone affecting >10% of the population. Smoking is the main and most well studies risk factor for developing COPD. However, chronic airway obstruction also in never-smoking populations has recently been recognized as an increasing health problem. In the clinical segment (PI: Prof. C. Magnus Skold), 1000 subjects from the Swedish national SCAPIS study will be clinically well characterized in one of the six Swedish University Hospital Respiratory clinics (clinical site PIs: Anders Andersson, Leif Bjermer, Anders Blomberg, Christer Janson, Lennart Persson, Magnus Skold). This first screening includes all never-smokers with COPD identified in the SCAPIS study. A subset of 300 subjects from the groups of Healthy never-smokers, current-smokers with normal lung function, current-smokers with COPD, ex-smokers with COPD, and never-smokers with COPD will be selected for the Bronchoscopy segment, were sampling will be performed from a number of anatomical locations, including bronchial biopsies, airway epithelial brushings, and bronchoalveolar lavage. Serum, plasma, and urine samples will also be collected. In the systems medicine segment (PI: Assoc. prof Asa M. Wheelock), alterations at the epigenetic, mRNA, microRNA, proteome, metabolome and microbiome level will be performed from multiple lung compartments (airway epithelium, alveolar macrophages, exosomes, and bronchoalveolar exudates). By means of biostatistics and bioinformatics approaches, specific mediators and molecular pathways critical in the pathological mechanisms of obstructive lung disease related to never-smoker disease phenotypes will be identified. In the immunohistochemistry segment (PI: Prof. Jonas Erjefalt), a number of molecules of relevance for disease pathology will be investigated in bronchial biopsies collected from the 300 subjects in the Bronchoscopy segment.
The most frequent causes of mouth breathers are the adenotonsillar hypertrophy. Adenotonsillectomy is the main choice for the elimination of the obstruction. However, this surgical treatment does not have its effect well elucidated and apnea has been cited in the literature as a residual outcome. Other types of supporting treatment may also been involved such as the use of corticosteroids, physiotherapy and orthodontic-orthopedic treatment, among them rapid maxillary expansion (RME). RME corrects the morphological constriction of the upper arch caused by buccal breathing and also reduce the airway resistance. Despite reports of RME influencing volume enhancement in pharyngeal airway, there are still few three-dimensional studies following the post-expansion effects. In addition, these changes are doubtful due postural changes of the tongue during the tomography exam. Conflicts of results are also present for changes in the nasal septum of children. The main alteration mentioned is the increase in the length of the lower third of the septum. The investigators propose a randomized, prospective, controlled clinical trial in patients with atresic maxilla with or without adenotonsillar hypertrophy. The patients will be treated with RME and adenotonsillectomy when the obstruction is present. The purpose of this study is elucidate if there is different outcomes considering the moment of RME treatment before or after the adenotonsillectomy.
After a structured teaching program anaesthetists are educated in identifying the cricothyroid membrane with ultrasonography. Thereafter their ability to do so is compared with their ability to do so with palpation. In an obese volunteer
Patients with OSA receive manometry measurements with Apneagraph (AG) during one night of sleep. All patients are simultaneously evaluated with polysomnography. Patients who are not eligible for CPAP therapy are additionally studied with drug-induced sleep endoscopy (DISE). The frequency and obstructions patterns in different sleep stages are assessed. In addition obstruction patterns detected with AG are compared with DISE examination in the selected cases.
The purpose of this study is to compare the effect of mandibular advancement bite block to standard bite block for prevention of hypoxemia, intervention events and adverse effects during endoscopic examinations.
Evaluation of the Aerin Medical Device used for the treatment of nasal obstruction.
Patients with chronic respiratory failure such as those associated with Chronic Obstructive Pulmonary Disease (COPD), Obesity Hypoventilation Syndrome (OHS), Obstructive Sleep Apnea (OSA) or Neuromuscular Disease (NMD) are increasingly managed with domiciliary non-invasive positive pressure ventilation (NIPPV). The aim of this study is to now compare the Automatic Expiratory Positive Airway Pressure (AutoEPAP) algorithm with a fixed manual EPAP in iVAPS mode on an Astral mixed mode ventilator. It is proposed that the automatic settings of AutoEPAP will be as effective at managing respiratory failure and upper airway obstruction (UAO) as manual EPAP on the Astral device. Specifically demonstrating that the AutoEPAP function is as effective at treating UAO as manual EPAP.