Leonardy-Doller B, Sesterhenn G
Laryngol Rhinol Otol (Stuttg). 1987 Jan;66(1):30-1.
The stapedial reflex was formerly regarded to be unreliable in neonates. Recent investigations by Weatherby and Bennett (1982) showed, that when using higher probe tone frequencies (800-1200 Hz), the reflex is present during the first days of life. Measuring amount and phase of impedance change, we investigated 40 neonates using probe tone frequencies of 800 and 1200 Hz. The results obtained indicate that 1200 Hz is more suited to investigate reflex activity. The Niemeyer-Sesterhenn equation was applied to distinguish between normal hearing and hearing loss. In 29 babies normal hearing could be determined objectively. 7 babies stirred during the procedure and the examination could therefore not be completed. In 4 cases the stapedial reflex was not detectable in spite of an apparently normal hearing. Reasons for the false positive results are discussed.
镫骨肌反射过去被认为在新生儿中不可靠。韦瑟比和贝内特（1982年）最近的研究表明，当使用更高的探测音频率（800 - 1200赫兹）时，该反射在生命的最初几天就会出现。通过测量阻抗变化的量和相位，我们使用800和1200赫兹的探测音频率对40名新生儿进行了研究。所得结果表明，1200赫兹更适合用于研究反射活动。应用尼迈耶 - 塞斯特亨恩方程来区分正常听力和听力损失。在29名婴儿中可以客观地确定其听力正常。7名婴儿在检查过程中乱动，因此检查无法完成。在4例中，尽管听力明显正常，但镫骨肌反射却无法检测到。文中讨论了假阳性结果的原因。
