Pou A M, Hirsch B E, Durrant J D, Gold S R, Kamerer D B
Department of Otolaryngology, University of Pittsburgh School of Medicine, Pennsylvania, USA.
Am J Otol. 1996 Jul;17(4):607-11.
Electrocochleography (ECoG), an objective electrophysiologic test, is useful in the clinical diagnosis of endolymphatic hydrops. The purpose of this study was further to define the role of ECoG in the diagnosis of this disease. A retrospective chart review of 100 patients undergoing tympanic ECoG was undertaken comparing symptoms, degree of hearing loss, duration of disease, and diagnosis with ECoG results. The apparent sensitivity and specificity of ECoG in the diagnosis of endolymphatic hydrops were determined to be 57% and 94%, respectively. Three of 30 positive ECoG results were falsely positive. Fluctuating hearing loss and the degree of hearing loss (< 40 dB) and duration of disease (< 48 months) were statistically significant in predicting positive ECoG results. We conclude that a positive ECoG result is helpful in objectively confirming the disease. However, a negative result does not rule out hydrops.
耳蜗电图（ECoG）是一种客观的电生理检查，在内淋巴积水的临床诊断中很有用。本研究的目的是进一步明确ECoG在该疾病诊断中的作用。对100例行鼓室ECoG检查的患者进行回顾性病历审查，比较其症状、听力损失程度、病程以及诊断结果与ECoG结果。ECoG诊断内淋巴积水的表观敏感性和特异性分别确定为57%和94%。30例ECoG阳性结果中有3例假阳性。波动性听力损失、听力损失程度（<40 dB）和病程（<48个月）在预测ECoG阳性结果方面具有统计学意义。我们得出结论，ECoG阳性结果有助于客观地确诊该疾病。然而，阴性结果并不能排除积水。
