扩展高频气导听阈和耳鸣的关系

目的 :探讨纯音听阈正常的耳鸣患者扩展高频气导听阈的变化。方法 :对 4 8例纯音听阈正常的耳鸣患者作扩展高频气导听阈测试 ,并根据年龄≤ 2 5岁 (14例 ) ,2 6～ 35岁 (18例 ) ,36～ 4 5岁 (16例 )分成 3个年龄组。同时以 30例正常听力、无耳鸣的青年作为正常对照组 ,分析 4组扩展高频气导听阈与耳鸣的关系。结果 :3个年龄组患侧各频率扩展高频听阈均数与自身健侧比较 ,且与正常对照组相比差异均有统计学意义 (P <0 .0 1) ;各年龄组患侧扩展高频听阈与 3个年龄组健侧相同频率听阈比较 ,差异有统计学意义 (P <0 .0 1) ,除≤2 5岁组与 2 6～ 35岁组相比差异无统计学意义 (P >0 .0 5 )外 ,≤ 2 5岁组与正常组在 10 .0kHz,12 .0kHz和 14 .0kHz差异亦无无统计学意义 (P >0 .0 5 )。结论 :纯音听阈正常的耳鸣患者的扩展高频气导听阈并不一定正常 ,耳鸣可能是内耳早期病变的症状之一 ,但是 ,对于年龄在 30岁左右及更年长者 ,扩展高频听阈改变还可能与年龄有关。扩展高频听阈测试应作为一种常规听力检查

Relationship between high frequency hearing threshold and tinnitus

OBJECTIVE: To investigate change of high frequency (UHF) threshold in patients suffering from tinnitus but with normal pure threshold. METHOD: High frequency audiometry was carried out on 48 tinnitus patients with normal pure shreshold and 30 young students with normal pure shreshold but without tinnitus as a control group. Then the patients were divided into three groups according to the age: < or = 25 years old, 26-35 years old and 36-45 years old. The hearing loss were statistically analyzed between the three groups and the control. RESULT: The results showed very significant differences of HF threshold between ipsilateral ear (tinnitus ear) in three groups and that in the control group, P < 0.01; very significant differences of HF threshold between ipsilateral ear (tinnitus ear) and that of contralateral ear (no tinnitus ear) in each group, P < 0.01; no significant differences of HF threshold between ipsilateral ear (tinnitus ear) in the age of < or = 25 years old and between 26-35 years old, P > 0.05. CONCLUSION: HF audiometry should be carried out on patients who are suffering from tinnitus but with normal hearing sensitivity, because their HF threshold may be abnormal. The change of HF threshold may be related to aging. The start age may be at about 30 years old.