目的在动物模型中探讨电钻振动诱导听力减退的机制和可能的血迷路屏障变化。

Objective To investigate the mechanism of burr vibration induced hearing loss and the possible change of blood-inner ear barrier in an animal model.

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结论在内耳缺血早期使用尼莫地平，能减轻血迷路屏障的损伤；

Conclusion Intravenous application of nimodipine in the early period of cochlear ischemia can alleviate the blood-labyrinth barrier damage and decrease its permeability.

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