Correlation Between the Degree of Middle Ear Pressure and the Eustachian Tube Dimensions : Radiological Study
The eustachian tube (ET) as it is known has important tasks on middle ear function and physiology. Middle ear ventilation, drainage, and protection of the middle ear to pathogens are major functions of the eustachian tube. Earlier studies showed that the eustachian tubes were shorter and were more horizontally located in children than in adults. This condition might increase otitis media in children (1).
The angles relative to the plane of the eustachian tube have previously been measured in a lot of work. These measurements were obtained in mostly cadaver studies. In various studies with the temporal bone computed tomography (CT), the eustachian tube placement was assessed according to the relationship to other structures (2).
Reid horizontal plane was found in 1962 by the world federation of radiology, bilateral inferior orbital wall and superior walls of the bilateral external ear canal. This plane is considered to be the position at which the head in a neutral anatomical position. Reid plane of eustachian tube angle is defined as the angle between tympanic pharyngeal orifice and Reid plane. Tubotympanic angle is an angle more recently associated with COM and cholesteatoma.This angle is defined as the angle of the longitudinal axis of the eustachian tube along the tympanic orifice and the longitudinal axis of the center the bony external ear canal of the bone in the axial plane(3).
There was a positive correlation between the degree of the mastoid pneumatization and the eustachian tube length (4). The decrease in the angle with the horizontal plane of Reid in the Eustachian tube in adults may play a significant role in the etiology of cholesteatoma(1).
Study Overview
Status
Intervention / Treatment
Study Type
Enrollment (Estimated)
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- healthy tympanic membrane age more than 7 years
Exclusion Criteria:
- i. Childern before 7 years. ii. Unhealthy tympanic membrane. iii. Patients with any kind of otitis media. iv. Patients with upper respiratory tract infection. v. Previous radiotherapy. vi. Patients with gastroesophageal reflux. vii. Previous temporal bone trauma.
Study Plan
How is the study designed?
Design Details
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
|
Anatomical and functional parameters of the Eustachian tube
Time Frame: Single assessment at the time of imaging or clinical evaluation
|
Single assessment at the time of imaging or clinical evaluation
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- khloud youssef sayed abdallah
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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