Kim So Young, Jeon Seul-Ki, Oh Seung Ha, Lee Jun Ho, Suh Myung-Whan, Lee Sang-Yub, Lim Hyun-Jung, Park Moo Kyun
Department of Otorhinolaryngology- Head & Neck Surgery, CHA University College of Medicine, Republic of Korea.
Department of Otorhinolaryngology- Head & Neck Surgery, Seoul National University College of Medicine, Republic of Korea.
Int J Pediatr Otorhinolaryngol. 2018 Aug;111:170-173. doi: 10.1016/j.ijporl.2018.06.016. Epub 2018 Jun 12.
The electrical dynamic range (EDR) has been suggested to be related to auditory performance in cochlear implant (CI) users. However, few reports have evaluated postlingual CI users who have used CIs for long periods in comparison with prelingual CI users. Here, we evaluated auditory perception and speech performance in terms of the EDR in long-term CI users. The EDR, and auditory and speech performances, were compared between pre- and post-lingual CI users.
We enrolled all patients who received CIs from April 2000 to December 2010 at Seoul National University Hospital, and who had ≥5 years of experience with CIs. The EDRs affording subjective responses at the threshold level (T-level) and comfortable level (C-level) were analyzed in terms of their relationships with pure tone audiometry levels, speech evaluation scores, including those on the Phonetically Balanced (PB) Word List test, vowel and consonant tests, a sentence test, and the Korean version of the Central Institute for the Deaf (K-CID) test; we also calculated Category in Auditory Performance (CAP) scores.
We found no significant difference in the average EDR, CAP, K-CID, PB word, consonant, or vowel scores between pre- and post-lingual CI users. The EDR was weakly associated with the PB word (P = 0.003, r = 0.462) and consonant scores (P = 0.005, r = 0.438). Other speech evaluations, such as the CAP, K-CID, and vowel scores, were not significantly associated with the EDR T-level. We found no association between pure tone thresholds at 0.5, 1, or 2 kHz, and the speech evaluation scores or EDRs of low-, middle-, or high-frequency channels.
The EDR was only weakly associated with speech performance, such as scores on consonant and PB word tests in long-term CI users, irrespective of pre- or post-lingual deafness status.
电动态范围（EDR）已被认为与人工耳蜗（CI）使用者的听觉表现有关。然而，与语前聋CI使用者相比，很少有报告评估长期使用CI的语后聋CI使用者。在此，我们根据长期CI使用者的EDR评估其听觉感知和言语表现。比较语前聋和语后聋CI使用者的EDR以及听觉和言语表现。
我们纳入了2000年4月至2010年12月在首尔国立大学医院接受CI植入且有≥5年CI使用经验的所有患者。分析了在阈值水平（T水平）和舒适水平（C水平）产生主观反应的EDR与纯音听力测定水平、言语评估分数之间的关系，言语评估分数包括语音平衡（PB）单词表测试、元音和辅音测试、句子测试以及韩国版聋人中央研究所（K-CID）测试的分数；我们还计算了听觉表现类别（CAP）分数。
我们发现语前聋和语后聋CI使用者在平均EDR、CAP、K-CID、PB单词、辅音或元音分数上没有显著差异。EDR与PB单词分数（P = 0.003，r = 0.462）和辅音分数（P = 0.005，r = 0.438）弱相关。其他言语评估，如CAP、K-CID和元音分数，与EDR T水平没有显著关联。我们发现0.5、1或2kHz处的纯音阈值与低频、中频或高频通道的言语评估分数或EDR之间没有关联。
无论语前聋或语后聋状态如何，在长期CI使用者中，EDR仅与言语表现（如辅音和PB单词测试分数）弱相关。
