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目的:探讨迟发性膜迷路积水(DEH)的诊断手段及意义。方法:15例DEH患者,分别行纯音听阈及耳蜗电图检查、前庭双温试验和前庭诱发的肌源性电位检查(VEMP),用以诊断及判断DEH的侧别和病变累及范围。结果:15例患者均为中～重度以上感音神经性聋。积水与听力下降同侧10例,对侧4例,双侧1例。水平半规管和球囊均有积水5例,水平半规管积水6例,球囊积水2例。VEMP异常者7例,其中1例患侧p13n23振幅消失,2例p13潜伏期延长,4例患侧p13n23低振幅。结论:DEH的诊断除了纯音测听外,耳蜗电图检查、前庭双温试验和VEMP检查是重要的实验室检查,应列为诊断常规。
Objective: To explore the diagnostic means and significance of delayed hydatidiform effusion (DEH). Methods: Fifteen patients with DEH were examined with pure tone audiogram and electrocochleogram, vestibular double temperature test and vestibular myogenic potential test (VEMP) to diagnose and determine the extent of side and lesion involvement in DEH. Results: All 15 patients were moderate to severe sensorineural hearing loss. Water and hearing loss in ipsilateral 10 cases, contralateral 4 cases, bilateral in 1 case. Level semicircular canal and balloon have water in 5 cases, 6 cases of horizontal semicircular canal water, balloon water in 2 cases. There were 7 cases of abnormal VEMP, 1 case of p13n23 amplitude disappeared, 2 cases of p13 latency prolonged, 4 cases of p13n23 low amplitude. CONCLUSIONS: In addition to pure tone audiometry, DEH diagnosis is an important laboratory test and should be routinely diagnosed, as is cochlear electrogram, vestibular dual temperature and VEMP.