Ossicular chain defects in adults with chronic otitis media

Chronic otitis media (COM) is a common condition characterized by the perforation of the tympanic membrane and inflammation of the mucosal lining the hollow space in the middle ear and airy spaces of the temporal bone for at least 2-6 week. This study was carried out to find out the status of the mi...

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Bibliographic Details
Published in:	The international tinnitus journal Vol. 23; no. 1; p. 6
Main Authors:	Bayat, Arash, Saki, Nader, Nikakhlagh, Soheila, Farshad, Mohammad Amin, Lotfinia, Mojtaba
Format:	Journal Article
Language:	English
Published:	United States 01-01-2019
Subjects:	Adolescent Adult Aged Audiometry, Pure-Tone Cohort Studies Ear Ossicles - physiopathology Ear Ossicles - surgery Female Follow-Up Studies Hearing Loss, Conductive - etiology Hearing Loss, Conductive - physiopathology Hearing Loss, Conductive - surgery Hospitals, University Humans Incus - physiopathology Iran Male Malleus - physiopathology Middle Aged Ossicular Prosthesis Otitis Media - complications Otitis Media - diagnosis Otitis Media - surgery Prosthesis Implantation Retrospective Studies Risk Assessment Stapes - physiopathology Treatment Outcome Young Adult Iran Ossicles chronic otitis media conductive hearing loss
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Summary:	Chronic otitis media (COM) is a common condition characterized by the perforation of the tympanic membrane and inflammation of the mucosal lining the hollow space in the middle ear and airy spaces of the temporal bone for at least 2-6 week. This study was carried out to find out the status of the middle ear ossicles in patients with COM and to correlate their status with clinical parameters. This retrospective clinical study was conducted on 107 COM patients (52 males and 55 females; age range: 18 to 75 years) submitted to surgery in the Otology Clinic at Imam Khomeini Hospital, Ahvaz Jundishapur University of Medical Sciences, Iran. Initially, a comprehensive case-history was obtained from patients and their hearing thresholds were recorded. Then, ossicles status and their junction condition were evaluated intraoperatively. The malleus was found intact in 70 (65.42%), absent in 10 (9.34), and eroded in 27 (25.24%) patients. Our results revealed that the incus was intact in 33 (30.84%), eroded in 55 (51.41%) and absent in 19 (17.75%) subjects. Stapes was found intact in 54 (50.46%) cases and eroded in 53 (49.54%) cases. The mean Pure Tone Average (PTA) and Air-Bone Gap (ABG) comparisons in "intact" and "discontinuous" ossicular chain groups was not significant (Independent sample t-test, p>0.05). Our results demonstrated that incus was the most susceptible middle ear ossicle to erosion in COM, whereas the malleus was the most resistant ossicle. Furthermore, ABG and PTA values cannot be considered as a potential preoperative predictor for ossicular chain status.
ISSN:	0946-5448
DOI:	10.5935/0946-5448.20190002