Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (53): 9970-9974.doi: 10.3969/j.issn.2095-4344.2012.53.018

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Hearing results following the tragus cartilage ring with perichondrium in myringoplasty

Liu Xiong-guang, Zhou Qing, Huang Shao-wei, Hong Yuan-geng, Peng Ding-jun, Yao Li-ping, Zhang Xiao-yan   

  1. Department of Otolaryngology, Ninth Affiliated Hospital of Guangxi Medical University, Beihai 536000, Guangxi Zhuang Autonomous Region, China
  • Received:2012-03-14 Revised:2012-07-09 Online:2012-12-30 Published:2012-12-30
  • About author:Liu Xiong-guang, Chief physician, Department of Otolaryngology, Ninth Affiliated Hospital of Guangxi Medical University, Beihai 536000, Guangxi Zhuang Autonomous Region, China Liuxg0308@126.com

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Abstract:

BACKGROUND: At present, there is still lack of a valid valuation system for evaluating chronic maturation treatment effect and subjective hearing improvement is the most important criteria to judge the success of myringoplasty.
OBJECTIVE: To evaluate the hearing results following the tragus cartilage ring with perichondrium in myringoplasty and to analyze the related impact factors.
METHODS: A total of 240 patients treated with tragus cartilage ring with perichondrium in myringoplasty were selected and followed-up for 3 years, then the eardrum growth was tracking observed and the pure tone threshold checking was performed, and then the hearing improvement was daily recorded. Multiple linear regression analysis was performed on 10 factors that may affect the efficacy.
RESULTS AND CONCLUSION: Multiple linear regression statistical analysis was subsequently carried out on these prognostic factors of hearing outcomes and yielded the following relative importance of predictive as follows; mean preoperative air conduction threshold, duration of dry ear, duration of disease and age. The subjective hearing changes were correlated with the objective hearing changes. Comparing the preoperative airbone gap and the postoperative subjective hearing ability, we found that the subjective hearing ability of 83.3% patients was significantly improved; comparison between preoperative air conduction threshold and postoperative subjective hearing ability showed that the subjective hearing ability of about 83.9% patients were significantly improved. Among the patients with decreased air conduction threshold less than 10 dB, the subjective hearing of 54.5% patients was improved; and when the air conduction threshold decreased more than 30 dB, the subjective hearing of 97.8% patients was improved. It suggests that the improvement degree of the subjective hearing is positively correlated with the decreasing degree of the air conduction threshold after myringoplasty, the more the air conduction threshold decreased, the more the subjective hearing improved.

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