Volume Measurement of Middle Ear and Mastoid Air Cell System with Impedance Audiometry on Patients with Eardrum Perforations

1982 ◽  
Vol 93 (sup386) ◽  
pp. 70-73 ◽  
Author(s):  
Pontus Lindeman ◽  
Jörgen Holmquist
Keyword(s):  
Middle Ear ◽  
Volume Measurement ◽  
Cell System ◽  
Impedance Audiometry

The Size Of The Middle Ear And The Mastoid Air Cell: System Measured By An Acoustic Method

1978 ◽  
Vol 85 (1-6) ◽  
pp. 24-32 ◽  
Author(s):  
O. I. Molvær ◽  
F. M. Vallersnes ◽  
M. Kringlebotn
Keyword(s):  
Middle Ear ◽  
Acoustic Method ◽  
Cell System

Impedance audiometry: Is it a wise investment?

PEDIATRICS ◽  
1976 ◽  
Vol 58 (2) ◽  
pp. 151-153
Author(s):  
Edward A. Mortimer
Keyword(s):  
Otitis Media ◽  
Middle Ear ◽  
Impedance Audiometry ◽  
Diagnosis And Management ◽  
Middle Ear Pressure ◽  
External Pressures ◽  
Serous Otitis Media

In this issue of Pediatrics there is a report1 of a method by which abnormalities of the middle ear that affect mobility of the drum, and therefore hearing, may be assessed quantitatively. In brief, the technique, called tympanometry, measures the compliance of the ear drum and, by ascertaining compliance at different external pressures, estimates pressures in the middle ear. The value to pediatricians and their patients of a means by which ear drum compliance and middle ear pressure can be measured lies primarily in the diagnosis and management of serous otitis media. Clearly, the data presented in this report indicate that this technique will usually discriminate between ears with middle ear effusions and normal ears.

Tympanometry Revealing Middle Ear Pathology

1976 ◽  
Vol 85 (2_suppl) ◽  
pp. 209-215 ◽  
Author(s):  
Ulf Renvall ◽  
Jörgen Holmquist
Keyword(s):  
Middle Ear ◽  
Pure Tone ◽  
Screening Method ◽  
Initial Study ◽  
Predisposing Factor ◽  
Pilot Studies ◽  
Impedance Audiometry ◽  
Middle Ear Pressure ◽  
Stapedius Reflex ◽  
Temporal Bones

In order to evaluate the usefulness of impedance audiometry as a screening method for school children, two different pilot studies were performed. The results indicated that impedance audiometry (tympanometry and stapedius reflex test) was more efficient than otoscopy and pure tone screening in the detection of ears with secretory otitis media (SOM). In order to gain some more experience, an extended study of 800 7-year-olds was performed. The results from this investigation showed 6.5% pathological values with pure tone screening, 13.5% pathological values with tympanometry and 32% elevated or nonelicitable stapedius reflexes. Analysis of our observations indicates that the stapedius reflex may be too sensitive a test to be used as a screening method. Tympanometry, however, is recommended as a complement to pure tone screening in screening of children. A 6–12 months follow-up was also performed on 357 ears in which an initial study had shown a middle ear pressure of ≤ −100 mm H2O. At the repeated test 20% had pathological pure tone screening, 40% had a middle ear pressure of ≤ −100 mm H2O, 57% had elevated or nonelicitable stapedius reflexes, and 14% had middle ear effusion. The high frequency of persisting abnormal middle ear pressure and effusion in these 357 ears suggests that a middle ear pressure of ≤ −100 mm H2O can be a predisposing factor for SOM. In an experimental study on human temporal bones it was demonstrated that the tympanogram preserves its original appearance when the water level is low in the middle ear, while a higher level gives rise to a pathological tympanogram. It is also demonstrated that there is a discrepancy between the tympanometrically, indirectly recorded middle ear pressure and the middle ear pressure as measured manometrically, directly from the middle ear.

Surgery of the Mastoid in Ears with Middle Ear Effusion

1980 ◽  
Vol 89 (3_suppl) ◽  
pp. 322-323 ◽  
Author(s):  
Jörgen Holmquist ◽  
Jan Jarlstedt ◽  
Anders Tjellström
Keyword(s):  
Middle Ear ◽  
Early Recognition ◽  
Chronic Otitis Media ◽  
Cell System ◽  
Middle Ear Effusion ◽  
Screening Programs ◽  
Mucosal Changes ◽  
Air Cells ◽  
Ear Effusion ◽  
Mastoid Air Cells

It has been demonstrated that in most ears with middle ear effusion the mastoid air cells may be involved as well. The mucosal changes and the secretion extends into all cavities of the ear including the mastoid air cells. In most ears insertion of a ventilating tube through the tympanic membrane is adequate for proper aeration of the middle ear as well as of the mastoid air cell system. The draining usually stops and the mucosa gradually changes into its normal condition. In a small percentage of these, the ear will continue to drain and the mastoid will not clear up. Antibiotics and decongestants fail to cure the ear. Surgical intervention of the mastoid may be indicated in the rare cases where conventional treatment fails to control the condition. The aim of this report is to 1) focus attention to the fact that the mastoid is an integral part of the middle ear cavity; 2) discuss the pathogenesis in stubborn ears with middle ear effusion; and 3) demonstrate the surgical procedure commonly used in our department in order to reestablish aeration of the mastoid air cell system. Early recognition and proper treatment of ears with middle ear effusion will hopefully reduce the incidence of stubborn cases and also decrease the number of those cases which end up with chronic otitis media and cholesteatoma. It is hoped that the screening programs involving school and even preschool children, as well as new preventative programs, will diminish the frequency of cases which need extensive surgery as discussed in this paper.

Studies in Impedance Audiometry: III. Middle Ear Disorders

1974 ◽  
Vol 99 (3) ◽  
pp. 165-171 ◽  
Author(s):  
J. Jerger ◽  
L. Anthony ◽  
S. Jerger ◽  
L. Mauldin
Keyword(s):  
Middle Ear ◽  
Impedance Audiometry

The Petromastoid Canal

1983 ◽  
Vol 92 (6) ◽  
pp. 640-644 ◽  
Author(s):  
Bruce Proctor
Keyword(s):  
Blood Vessels ◽  
Posterior Fossa ◽  
Middle Ear ◽  
Cell System ◽  
Facial Canal ◽  
Bony Labyrinth ◽  
Middle Ear Cleft ◽  
Petromastoid Canal

The embryology and anatomy of the petromastoid canal is reviewed. This structure may be responsible for the passage of some infections of the middle ear cleft into the posterior fossa. It also transmits important blood vessels to a portion of the bony labyrinth, to the facial canal, and to the mucosa of the mastoid air cell system.

Analysis of Tympanometry of a Severe to Profound Hearing-Impaired Population of School-Age Children

1979 ◽  
Vol 44 (2) ◽  
pp. 230-235 ◽  
Author(s):  
Nilda Morgenstern ◽  
Barbara Jones-Crymes
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Middle Ear ◽  
Hearing Impaired ◽  
Sensorineural Hearing ◽  
School Age Children ◽  
School Age ◽  
Reliable Technique ◽  
Screening Technique ◽  
Impedance Audiometry

Impedance audiometry provides a reliable technique for identifying undetected middle ear pathologies in children with severe to profound sensorineural hearing loss. In this study, tympanograms were obtained on 104 children with sensorineural hearing losses of 60 dB or more. The tympanograms were classified according to type and were compared for bilateral similarity. A high percentage of the younger children had abnormal tympanograms, with almost half of these children having the same type of abnormal tympanogram bilaterally. The use of impedance audiometry as a screening technique for hearing-impaired school-age children is discussed.

scholarly journals Dynamic Slow Motion Video Endoscopy as an Adjunct to Impedance Audiometry in the Assessment of Eustachian Tube Function

2017 ◽  
Vol 22 (02) ◽  
pp. 141-145
Author(s):  
Sanoop Sanu ◽  
Shilpa Divakaran ◽  
Sabarinath Vijayakumar ◽  
Sunil Saxena ◽  
Arun Alexander ◽  
...  
Keyword(s):  
Eustachian Tube ◽  
Middle Ear ◽  
Care Center ◽  
Tertiary Care ◽  
Slow Motion ◽  
Nasal Endoscopy ◽  
Complete Agreement ◽  
Impedance Audiometry ◽  
Video Endoscopy ◽  
Motion Video

Introduction Eustachian tube (ET) dysfunction plays an important role not only in the pathophysiology of various middle ear disorders, but also in predicting the outcome of the treatment. As there is no single test that assesses both the anatomic and physiological functions of the ET, a combination of tympanometry and dynamic slow motion video endoscopy may improve the sensitivity of ET function assessment. Objective To find out if there is any correlation between dynamic slow motion nasal video endoscopy and impedance audiometry in assessing ET function in patients with middle ear diseases. Methods Ours was a descriptive study performed with 106 patients attending the Ear, Nose and Throat (ENT) Outpatient Department of a tertiary care center in South India with features suggestive of middle ear disease. All patients underwent impedance audiometry and dynamic slow motion nasal video endoscopy, and were graded based on the severity of the ET pathology. Results A total of 47 out of 97 patients with abnormal endoscopy findings also had abnormal impedance audiometry. The correlation was greater among the patients with higher grades of ET dysfunction. The endoscopy findings of 106 cases, when correlated with middle ear manometry, revealed that 56 cases showed complete agreement, and 50 cases showed disagreement. The nasal endoscopy results, when correlated with middle ear manometry studies by using McNemar's chi-squared (χ2) test, showed a significant association between the 2 tests (p = 0.017). Conclusion There is a significant alteration in middle ear pressure as the severity of the ET tube dysfunction increases. Impedance audiometry and nasal endoscopy provide a better measure of ET function.

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