Vignesh S S, Jaya V, Moses Anand, Muraleedharan A
Upgraded Institute of Otorhinolaryngology - Institute of Speech and Hearing, Madras Medical College and Rajiv Gandhi Government General Hospital, E.V.R. Periyar Salai, Chennai, 600003 India.
Institute of Diabetology, Madras Medical College and Rajiv Gandhi Government General Hospital, E.V.R. Periyar Salai, Chennai, 600003 India.
Indian J Otolaryngol Head Neck Surg. 2015 Sep;67(3):234-7. doi: 10.1007/s12070-014-0779-2. Epub 2014 Sep 26.
Diabetes mellitus (DM) is a metabolic disorder caused by hyperglycemia which leads to dysfunction of various organs. Hearing acuity is equally hindered by this disorder. Among individuals with DM audiological characteristics of DM type 1 are of great concern in the literature. This study aims at establishing high frequency audiometry (HFA) as a useful tool in identifying early onset of hearing loss in individuals with DM type 2. 20 non-diabetic participants and 20 individuals with DM type 2 in the age range of 20-40 years were considered for the study. Subjects in both groups underwent otoscopic examination, PTA at 0.25, 0.5, 1, 2, 4 and 8 kHz and HFA at 9, 10, 11.2, 12.5, 14 and 16 kHz. Results revealed statistically significant difference in thresholds of both PTA and HFA at all frequencies across the group, but the mean threshold difference between the diabetic and non-diabetic group was marked in HFA than in PTA. In the diabetic subjects the thresholds of PTA was within 25 dBHL at all frequencies when compared to the thresholds of HFA. Individuals with DM type 2 showed bilateral symmetrical mild hearing loss in HFA and the hearing loss increased with ascending test frequencies from 9,000 to 16,000 Hz. Mild hearing loss in HFA is an indicator for early onset of hearing loss in DM type 2. Hence this present study emphasis the clinical utility of HFA in young adults with DM type 2.
糖尿病（DM）是一种由高血糖引起的代谢紊乱，可导致各个器官功能障碍。这种疾病同样会损害听力。在1型糖尿病患者中，其听力学特征在文献中备受关注。本研究旨在确立高频测听法（HFA）作为一种有用的工具，用于识别2型糖尿病患者听力损失的早期发作。本研究纳入了20名年龄在20至40岁之间的非糖尿病参与者和20名2型糖尿病患者。两组受试者均接受了耳镜检查、0.25、0.5、1、2、4和8kHz的纯音听阈测试（PTA）以及9、10、11.2、12.5、14和16kHz的高频测听（HFA）。结果显示，两组在所有频率下的PTA和HFA阈值均存在统计学上的显著差异，但糖尿病组和非糖尿病组之间的平均阈值差异在HFA中比在PTA中更为明显。与HFA阈值相比，糖尿病受试者在所有频率下的PTA阈值均在25dBHL以内。2型糖尿病患者在HFA中表现出双侧对称性轻度听力损失，且听力损失随着测试频率从9000Hz升至至16000Hz而增加。HFA中的轻度听力损失是2型糖尿病患者听力损失早期发作的一个指标。因此，本研究强调了HFA在2型糖尿病年轻成人中的临床应用价值。
