慢性中耳炎之病變與聽力損失

Hearing Loss Associated with Various Pathological Lesions in Chronic Otitis Media

王仁鵬(Jen-Peng Wang) ； 洪朝明(Chao-Ming Hung)

《中華民國耳鼻喉科醫學會雜誌》 28卷6期 (1993/12) Pp. 368-375

https://doi.org/10.6286/1993.28.6.368

摘要

This study was designed to investigate the degree of hearing loss associated with various of the middle ear. The lesins, as existing in patients, were evalu- ated audiometrically and verifed at surgery. Six group were studied. Group A: perfo-ration smaller than 50% of the tympanic membrane without other pathology; Group B: perforation larger than 50% of the tympanic membrane without other pathol-ogy; Group C: perforation of the tympanic membrane and fixed ossicular chain; Group D: perforation of the tympanic membrane and defect of the ossicular chain; Group E: retraction of the tympanic membrane and intact ossicular chain; Group F: retraction of the tympanic membrane and fixation or defect of the ossicular chain. The air-bone gap (A-B gap) of individual audiograms were analyzed. There were 549 previously untreated ears for this study. Group A consisted fo 184 ears and the mean A-B gap was 20.4 ±9.0Db. Group B consisted of 133 ears and the mean A-B gap was 26.8±9.5Db. Group C consisted of 55 ears and the mean A-B gap were 34.6±9.6Db. Group D consisted of 59 ears and the mean A-B gap was 36.8±9.1Db. Group E consisted of 35 ears and the mean A-B gap was 24.9 ±13.7Db. Group Fconsisted of 83 ears and the mean A-B gap was 32.5±10.3Db. Statistical analysis with Student t-test indi-cated a significant difference between the means of each groups.
Minor pathology, including polypoid change of the middle ear mucosa, granula-tion tissue over the facial recess or tympanic sinus and discharge over the hypotympanum or around the ossicular chain, were found in group A and B during operation. Statistical analysis also revealed no significant difference in the mean A-B gap between the pathologic group and non-pathologic group in group A and B. Although fixed or defected stapes appeared to have more A-B gap than free movable or intake stapes in groups C and D, no statistically significant difference was found between them.

關鍵字

慢性中耳炎 ； 中耳病變 ； 聽力損失

並列摘要

This study was designed to investigate the degree of hearing loss associated with various of the middle ear. The lesins, as existing in patients, were evalu- ated audiometrically and verifed at surgery. Six group were studied. Group A: perfo-ration smaller than 50% of the tympanic membrane without other pathology; Group B: perforation larger than 50% of the tympanic membrane without other pathol-ogy; Group C: perforation of the tympanic membrane and fixed ossicular chain; Group D: perforation of the tympanic membrane and defect of the ossicular chain; Group E: retraction of the tympanic membrane and intact ossicular chain; Group F: retraction of the tympanic membrane and fixation or defect of the ossicular chain. The air-bone gap (A-B gap) of individual audiograms were analyzed. There were 549 previously untreated ears for this study. Group A consisted fo 184 ears and the mean A-B gap was 20.4 ±9.0Db. Group B consisted of 133 ears and the mean A-B gap was 26.8±9.5Db. Group C consisted of 55 ears and the mean A-B gap were 34.6±9.6Db. Group D consisted of 59 ears and the mean A-B gap was 36.8±9.1Db. Group E consisted of 35 ears and the mean A-B gap was 24.9 ±13.7Db. Group Fconsisted of 83 ears and the mean A-B gap was 32.5±10.3Db. Statistical analysis with Student t-test indi-cated a significant difference between the means of each groups.
Minor pathology, including polypoid change of the middle ear mucosa, granula-tion tissue over the facial recess or tympanic sinus and discharge over the hypotympanum or around the ossicular chain, were found in group A and B during operation. Statistical analysis also revealed no significant difference in the mean A-B gap between the pathologic group and non-pathologic group in group A and B. Although fixed or defected stapes appeared to have more A-B gap than free movable or intake stapes in groups C and D, no statistically significant difference was found between them.

並列關鍵字

chronic otitis media ； middle ear pathology ； hearing loss