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KMID : 0361020010440040362
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Korean Journal of Otolaryngology - Head and Neck Surgery
2001 Volume.44 No. 4 p.362 ~ p.365
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Estimation of obstructive pathologies in patient with chronic otitis media - comparison between the estimated volume by impedance audiometry and radiologic findings
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이승환/Seung Hwan Lee
박철원/조석현/정승원/안현석/이윤서/Chul Won Park/Seok Hyun Cho/Seung Won Jung/Hyun Seok Ahn/Yoon Seo Lee
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Abstract
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Background and Objectives : Impedance audiometry is a clinically useful method for measuring the physical volume of pneumatized middle ear and mastoid medial using a hermetically sealed probe tip. This study was performed to evaluate the
obstructive
pathologies of middle ear and mastoid by measuring their volumes in patients of chronic otitis media. Materials and Methods : The volume of middle ear and mastoid was measured in 37 ears with dry eardrum perforation by chronic otitis media. For
control, we measured the volume in 23 ears with the traumatic tympanic membrane perforation. A comparison was made between the volumes and pneumatization in the mastoid X-ray, the soft tissue density in the computed tomography of temporal bone,
and
the
obstruction site at operative findings. Results : The mean volume of the traumatic tympanic membrane perforation was 6.75±0.42 ml. The mean volume of chronic otitis media was 3.36±2.19 ml and the volume of the sclerotic group was significantly
smaller
than that of the pneumatic group in the mastoid X-ray. The pathological group had significantly smaller volume than the non-pathological group at operative findings. Conclusion : The impedance audiometry enables a rapid and valuable evaluation
of
the
presence or absence of obstructive pathologies in the middle ear and mastoid in chronic otitis media with dry tympanic perforation.
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KEYWORD
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