View clinical trials related to Middle Ear Barotrauma.
Filter by:The goal of this observational study is to measure the effect of hyperbaric oxygen therapy on middle ear pressure in order to predict the risk factors for middle ear barotrauma also, to assess its effects on hearing functions of the inner ear in participant population. The main questions aim to answer are: - Is there a change in middle ear pressure before and after exposure to hyperbaric oxygen therapy ? - Is there a change in hearing threshold level before and after exposure to hyperbaric oxygen therapy ? The middle ear pressure, eustachian tube functions and the hearing threshold of the participants will be assessed immediately before the fist session and within one hour after the first and tenth sessions.
Eustachian tube dysfunction (ETD) and middle ear barotrauma (MEB) are common reported complications during hyperbaric oxygen treatment. The Phase I study data was the first to demonstrate a statistically significant decrease in the occurrence of symptomatic ETD and middle ear barotrauma (MEB). The Phase I Trial suggested the total time interval and rate (slope) of compression (ROC) may be a determining factor in ETD and MEB. This Phase II study investigates an optimal total time interval and rate of compression to reduce ETD and MEB when considering each multiplace treatment (with multiple patients) as the unit of observation collectively as a group, rather than for each individual patient. Data will be collected prospectively on group patient-treatment exposures. Our investigators randomly assign patient-treatment group exposures to two different rates (slopes) of compression. These are limited to the linear versus the non-linear rates (slopes) of compression identical to two of four compression profiles used in the Phase I and Phase II trials. All patients experiencing symptoms of ETD and MEB requiring compression stops will be evaluated post treatment to confirm the presence of ETD and MEB using the O'Neill Grading System (OGS). Data will be analyzed using the IBM-SPSS statistical software program. The number of compression holds observed in each of the compression schedules/compression profiles using an identical 15-minute total time interval of compression but varying in the rate (slope) of compression will be recorded as in the Phase I and II studies. Symptomatic patients who required compression stops (as in the Phase I trial) using a USN TT 9 during elective hyperbaric oxygen treatments in a Class A multiplace hyperbaric chamber will be compared. Statistical analysis using descriptive and Inferential statistics will be applied to the patients requiring first stops in the compression profiles. This will be used to further evaluate the data restricted to the rate of compression (linear vs. non-linear) and whether this is associated with the number of compression holds. The 15-minute total time interval of compression will be identical in both compression profiles studied since this was found to be the total time interval of compression with the least number of treatment stops/holds in the phase I and phase II studies.
Eustachian tube dysfunction (ETD) and middle ear barotrauma (MEB) are common reported complications during hyperbaric oxygen treatment. The Phase I study data was the first to demonstrate a statistically significant decrease in the occurrence of symptomatic ETD and middle ear barotrauma (MEB). The Phase I Trial suggested the total time interval and rate (slope) of compression (ROC) may be a determining factor in ETD and MEB. This Phase II study investigates an optimal total time interval and rate of compression to reduce ETD and MEB when considering each multiplace treatment (with multiple patients) as the unit of observation collectively as a group, rather than for each individual patient. Data will be collected prospectively on group patient-treatment exposures. The investigators randomly assigned patient-treatment group exposures to four different time interval and rate (slope) of compression. These total time intervals of compression and rates (slopes) of compression are identical to those used in the Phase I trial. All patients experiencing symptoms of ETD and MEB requiring compression stops will be evaluated post treatment to confirm the presence of ETD and MEB using the O'Neill Grading System (OGS). Data will be analyzed using the IBM-SPSS statistical software program. The number of compression holds observed in each of the 4 compression schedules, similar to ther Phase I trial will be recorded. Patients who are symptomatic and require compression stops (as in the Phase I trial) using a United States Navy Treatment Table 9 (USN-TTN9) during elective hyperbaric oxygen treatments in a Class A multiplace hyperbaric chamber will be analyzed. Analysis using descriptive and inferential statistics will be applied to the patients requiring first stops in the 4 compression profiles. This Phase II study increases the sample size of treatments and they will be combined with the total number of treatments used in the original phase I study. This will increase power to facilitate detailed descriptive analysis and to determine if the findings are robust in the phase I study.
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.
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.