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KMID : 0361020170600010007
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Korean Journal of Otolaryngology - Head and Neck Surgery
2017 Volume.60 No. 1 p.7 ~ p.12
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The Efficacy of Endoscopic Exploratory Tympanotomy in Conductive Hearing Loss Patients
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Kim Hong-Chan
Cho Wan-Seok
Seong Jong-Yuap
Jeon Eun-sun
Lee Sung-Su
Cho Hyong-Ho
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Abstract
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Background and Objectives: The aim of this study is to investigate the effectiveness of the endoscopic exclusive transcanalar approach for the management of conductive hearing loss.
Subjects and Method: This was a retrospective comparative study of 106 patients who underwent exploratory tympanotomy at Chonnam National University Hospital from January 2008 to March 2016. The subjects were classified into two groups; endoscopic tympanotomy (ET, n=26) and microscopic tympanotomy (MT, n=80). Demographic data, operation time, postoperative admission days, pure tone audiometric results of pre-operation and post-operation at 3 months, and hearing success rate were evaluated.
Results: The mean operation time of MT (101.7±24.8 minutes) was longer than that of ET (59.8±23.2 minutes) with a statistical significance (p＜0.01). The mean postoperative admission days of MT (4.4±1.3) was longer than that of ET (2.0±0.6) with a statistical significance (p＜0.01). Hearing gain (air-conduction) and air-bone gap improvements were not significantly different between the groups. However, the hearing success rate of ET [partial ossicular replacement prosthesis (PORP) 85.7%, total ossicular replacement prosthesis (TORP) 81.8%] was significantly improved enormously compared to that of MT (PORP 62.9%, TORP 64.3%).
Conclusion: With regards to conductive hearing loss, the endoscopic approach provided a better surgical view and less invasiveness compared with the microscopic approach. In conclusion, endoscopic exploratory tympanotomy had several advantages in operation time, admission days and hearing success rate.
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KEYWORD
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Conductive, Endoscopy, Hearing loss, Ossicular replacement
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