View clinical trials related to Barotrauma.
Filter by:Ear, nose and throat barotrauma are the most frequently encountered accidents during diving. One study related to recreational diving reports that ENT barotrauma concern 10% of dives with experimented divers and 30% with novice divers. Nevertheless, a low number of studies were realized on ENT barotrauma, particularly those involving middle ear and sinuses, maybe because most of them evolve favorably without sequelae. Besides, it has been described that pathologies which may induce chronic or acute tubal dyspermeability can result in an increased middle ear or sinus barotrauma risk. But once again no study was realized which objective was to look for an association between these risk factors and for the association strength between risk factors and ENT barotrauma occurrence. Few data on military population exist either. However, operational constraints, stressing environment with necessity of realizing performances to validate diving certificate or other military diving specificities can lead one to think that military divers have an increased risk to be subjected to ENT barotrauma. Furthermore, therapeutic measures and more particularly physicians' attitude concerning a temporary incapacity period to avoid recurrence or clinical worsening of barotrauma differ depending on diving centers. But the question to resume diving or not is essential for military staff given that temporary incapacity may lead to training cessation or can be questioned because of operational constraints requiring anticipated diving resumption. The purpose of this research is to study middle ear and sinus barotrauma thanks to questionnaires focused on those pathologies and their potential risk factors. The hypothesis is that it will allow identification of main risk factors in order to develop preventive measures as well as the characteristics and missions of concerned divers and the impact of those barotrauma on this population.
Pneumonia is a recurrent element of COVID-19 infection, it is often associated with development of respiratory failure and patients frequently need various degrees of oxygen therapy up to non invasive ventilation (NIV-CPAP) and invasive mechanical ventilation (IMV). Main purpose of this study is to evaluate with non invasive clinical instruments (pletysmography, Diffusion lung capacity for carbon monoxide -DLCO-, six minute walking test and dyspnea scores) and radiological tools (chest X-ray and chest CT scan) the development of medium-to-long term pulmonary sequelae caused by SARS-CoV-2 pneumonia.
Hyperbaric oxygen therapy (HBOT) utilizes 100% oxygen delivery at a pressure greater than 1 atm for the treatment of various emergent medical conditions including carbon monoxide poisoning. The most commonly associated complication of HBOT is middle ear barotrauma (MEB) which occurs when the eustachian tube does not allow air to enter the middle ear space to equalize the pressure between the ambient environment and the inner ear. Patients experiencing MEB usually feel pressure or pain in their ear(s). The spectrum of symptoms ranges from sensation of ear fullness and muffled hearing to severe pain, vertigo and tympanic membrane rupture. The incidence of MEB, depending on the definition used is between 2-45%. The severe discomfort associated with MEB sometimes causes HBOT to be postponed or abandoned. Last year 27/991 treatments at our Center for Hyperbaric and Dive Medicine were aborted due to MEB. Currently there is no objective criteria for predicting which patients will experience these complications, nor is there consensus on effective prevention measures. At our facility, oxymetazoline, a topical nasal decongestant, is the standard rescue medication administered for patients that have symptoms of MEB during HBOT. This is despite two negative studies showing that this medication does not work any better than placebo. Other studies involving scuba divers and airplane travelers showed that oral pseudoephedrine is effective in decreasing MEB. However, the use of pseudoephedrine for patients undergoing HBOT has not been studied. The investigators plan to perform a randomized double blind placebo control trial to determine if pseudoephedrine is effective in decreasing the rate of MEB during HBOT.
Middle ear barotrauma (MEB) is the most common complication during hyperbaric oxygen therapy (HBOT). Though Valsalva and Toynbee maneuvers have been proposed to prevent MEB, still some patients discontinue HBOT due to severe otalgia, hemorrhage or perforation of tympanic membrane associated with HBOT. Currently, there is no optimal prophylactic management for MEB associated with HBOT. The aim of this protocol is to investigate the efficacy of self-acupressure therapy on MEB associated with HBOT.
Audiological evaluation performed to patients on hyperbaric oxygen therapy to see its effects on middle ear pressure
Extubation failure is a significant problem in preterm neonates and prolonged intubation is a well-documented risk factor for development of chronic lung disease. Out of the respiratory modalities available to extubate a preterm neonate; high flow nasal canula, nasal continuous positive airway pressure (nCPAP) and noninvasive positive pressure ventilation (NIPPV) are the most commonly used. A recent Cochrane meta-analysis concluded that NIPPV has lower extubation failure as compared to nCPAP (30% vs. 40%) NAVA (neurally adjusted ventilatory assist), a relatively new mode of mechanical ventilation in which the diaphragmatic electrical activity initiates a ventilator breath and adjustment of a preset gain (NAVA level) determines the peak inspiratory pressure. It has been reported to improve patient - ventilator synchrony and minimize mean airway pressure and ability to wean an infant from a ventilator. However till date there has been no head to head comparison of extubation failure in infants managed on NAVA with conventional ventilator strategies. In this study the investigators aim to compare primary extubation failure rates in infants/participants managed by NIPPV vs. NI-NAVA (non invasive NAVA). Eligible infants/participants will be randomized to be extubated to predefined NIPPV or NI-NAVA ventilator settings and will be assessed for primary extubation failure (defined as reintubation within 5 days after an elective extubation).
A prospective, multicenter study to evaluate effectiveness and safety of Tymbion iontophoresis and tympanostomy tube placement using the Tula iontophoresis and tube delivery systems for adults in an office setting. This study cohort is called Group B and includes tube placement. Protocol CPR007003 also included a first study group ('A', without tube placement) that was completed and described in a separate registration (NCT03119181).
This study will determine if newly developed and more standard tests of Eustachian tube function can identify those persons who have ear pain (barotrauma) or develop middle-ear inflammation and/or fluid (barotitis) when they are exposed to rapid changes in air pressure as, for example, during airplane flights or scuba diving. Up to 150 adults and children (10-50 years old) who fly or dive at least 1-2 times and experience ear pain or develop middle-ear fluid during those activities and approximately 60 adults and children who fly or dive but do not experience these problems will undergo Eustachian tube function testing during simulated flight and diving.
Patients who are intubated (breathing tube in windpipe) are often transported by air ambulance. Changes in atmospheric pressure during flight may cause pressure increases in the air-filled cuff holding the tube in the windpipe. Studies show that more than half the patients had potentially harmful pressures in the cuff during flight. High pressures lead to complications, such as injury to the windpipe. To avoid injury, cuff pressures must be kept at a safe level. There are many ways to avoid unsafe cuff pressures. One is to inflate the cuff with sterile fluid instead of air. Fluids are not subject to changes in atmospheric pressure. Using fluid, instead of air, in the cuff causes less pressure increases and less windpipe injury. The use and safety profile of this during transport by air ambulance has not been studied. This study compares tracheal tube cuff pressures, filled with air or fluid, at routine flying altitudes during patient transports by air ambulance.