Atraumatic round window deep insertion of cochlear electrodes
Atraumatic round window deep insertion of cochlear electrodes
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DOI：
10.3109/00016489.2011.557780
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发表时间：
2011-07-01
影响因子：
1.4
通讯作者：
Szkielkowska, Agata
中科院分区：
文献类型：
--
作者：
Skarzynski, Henryk;Lorens, Artur;Szkielkowska, Agata
结论：该研究表明，通过使用圆窗入路和深插入，可以减少电极插入创伤（EIT），如听力保护标记物的结果所示。目的：在这项前瞻性研究中，对42名低频听力受试者在手术前使用28 mm圆窗深插入进行了EIT评估。方法：以听力保留程度作为EIT的指标。术前及术后3、6、13个月进行纯音测听、单音节测试。结果：术后3个月即刻听力保留率为92.9%（39/42）。术后13个月与手术相关的听力保留率为85%（34/40）~ 90%（36/40）。同侧植耳术前、术后听阈差异有显著性意义（P < 0.005）。对照耳的阈值比较显示，术前和术后13个月测试的阈值之间存在显著差异（p < 0.05）。当将相同时间间隔内每个测试频率的平均对侧听力损失的减去因子应用于植入耳时，未发现明显的听力损失，表明术后同侧进行性听力损失是由病因而不是手术引起的。
Conclusion: This study shows that by using the round window approach and deep insertion, it is possible to reduce electrode insertion trauma (EIT), as indicated by the results of the hearing preservation marker. Objectives: In this prospective study EIT was evaluated in 42 subjects with low frequency hearing before surgery with 28 mm round window deep insertion. Methods: The degree of hearing preservation was a marker of EIT. Pure tone audiometry, monosyllable testing was conducted preoperatively and then at 3, 6, and 13 months after surgery. Results: Immediate hearing preservation (3 months postoperatively) was 92.9% (39/42). The surgery-related hearing preservation 13 months after surgery varied from 85% (34/40) to 90% (36/40). The ipsilateral implanted ear showed significant differences between preoperative and postoperative hearing thresholds (p < 0.005). Comparisons of thresholds for the control ear showed a significant difference between preoperative and postoperative thresholds tested 13 months after surgery (p < 0.05). When the subtraction factor of the mean contralateral hearing loss for each tested frequency for the same time interval was applied to the implanted ear, no significant hearing loss was found, showing that postoperative ipsilateral progressive hearing loss was caused by etiology rather than surgery.