Surgical results of modified canal wall down tympanoplasty |
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Authors: | Feng-Ming Gu |
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Affiliation: | Department of Otology and Skull Base Surgery, Eye and ENT Hospital, Fudan University, Shanghai, People's Republic of China |
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Abstract: | Conclusion: Patients with mastoiditis and chronic suppurative otitis media which has small mastoids that make them ideal candidates for modified canal wall down mastoidectomy (MCWD) which contributes to a dry and spacious ear and the maintaining and improving hearing.Objectives: To evaluate surgical outcomes for chronic otitis media underwent MCWD.Methods: A clinical retrospective study was performed on 47 ears with chronic otitis media which has relatively limited attic lesions have the small, sclerotic and hypocellular mastoids according to the preoperative high-resolution CT scan of the temporal bone that underwent MCWD and 32 ears with typical canal wall down operation form January 2010 to January 2016.Results: In the MCWD group, the mean preoperative air conduction (AC) threshold of 38.2?±?1.1?dB was lowered to 31.0?±?0.8?dB postoperatively (p?.01). The mean pre- and postoperative air-bone gaps (ABG) of all patients were 16.0?±?1.0?dB and 9.6?±?0.8?dB, respectively. In the canal wall down group, the mean preoperative AC threshold of 37.2?±?1.0?dB was lowered to 32.8?±?0.9?dB postoperatively (p?.01). The mean pre- and postoperative air-bone gap was reduced with 4.4?±?0.4?dB (p?.01). There was statistical difference in hearing improvement between the modified canal wall down and the canal wall down group (p?.05). |
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Keywords: | Chronic otitis media and mastoiditis tympanoplasty canal wall down |
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