一、临床资料患者,男,40岁,原Y-7飞机机械员,总飞行时间13000h,既往历年体检结论健康。于1996年9月14日晚睡觉时出现耳鸣,先为一侧,几小时后发展为双侧。严重干扰睡眠。其妻在夜深人静时也说听到了丈夫的耳鸣声音。次日患者来到航医室就诊,查体:双侧耳鼓膜完整,无充血,标志清晰 First, the clinical data Patients, male, 40 years old, the original Y-7 aircraft mechanic, the total flight time 13000h, the previous medical examination concluded that the health. Tinnitus occurred on sleep on the evening of September 14, 1996, first on one side and a few hours later on both sides. Serious interference with sleep. His wife also heard the voice of her husband’s tinnitus in the dead of night. The next day the patient came to visit the medical clinic, physical examination: bilateral ear membrane integrity, no congestion, clear sign