PDF(Pubmed)
Abstract：
Primary objective of this study was to compare the role of canalplasty in tympanoplasty, with that of only tympanoplasty, in patients of chronic suppurative otitis media with narrow external auditory canal and moderate to large central perforation, in terms of hearing improvement, graft uptake, intra operative ease. This study included 60 patients with chronic mucosal otitis media with narrow external auditory canal, with moderate to large central perforation, presenting to our institution from September 2019 to August 2021. Group A consisted of 30 patients, who underwent tympanoplasty with canalplasty and Group B consisted of 30 patients, who underwent tympanoplasty without canalplasty. Both the groups were followed up for 3 months, compared and analysed for hearing improvement and graft uptake. The results of our study indicated that Group A achieved 93.3% graft uptake rates compared to group B which achieved 80%. In Group A gain in air bone gap was 12.43 dB, whereas in Group B it was about 9.50 dB. Group A had significant hearing improvement and better graft uptake compared to Group B. It is advantageous to perform canalplasty prior to tympanoplasty in patients with narrow external auditory canal in whom the entire rim of annulus is not visible in one microscopic view. It yields better hearing improvement and graft uptake and prevents lateralization of the graft.
摘要：
这项研究的主要目的是比较耳道成形术在鼓室成形术中的作用，只有鼓室成形术，慢性化脓性中耳炎患者外耳道狭窄和中度至大面积中央穿孔，在听力改善方面，移植物吸收，术中缓解。本研究纳入60例慢性黏膜性中耳炎伴外耳道狭窄患者,有中等到较大的中央穿孔，于2019年9月至2021年8月向我们的机构提交。A组30名患者,接受鼓室成形术和小管成形术的B组包括30例患者，进行鼓室成形术而没有进行泪管成形术。两组均随访3个月。比较和分析听力改善和移植物吸收。我们的研究结果表明，与B组达到80％相比，A组达到93.3％的移植物吸收率。在A组中，空气骨间隙增益为12.43dB，而B组约为9.50dB。与B组相比，A组有显着的听力改善和更好的移植物吸收。在狭窄的外耳道患者中，在鼓室成形术之前进行耳道成形术是有利的，在一个显微镜下看不到环的整个边缘。其产生更好的听力改善和移植物摄取,并且防止移植物的偏侧化。
