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本文报道对477例用手工探查槌骨柄,指出鼓膜张肌不同程度的强直性收缩是一种保护性的中耳反射,作者对渗出性中耳炎鼓膜切开前作常规槌骨柄探查。成年人在局麻下进行,小儿或精神紧张者需要全身麻醉。用一般的或金属探子,放于槌骨柄上(鼓膜脐上1～2mm),逐渐加重手指压力,槌骨柄的活动常示鼓膜表面光反射改变和短突移位。应用机械压力计测定,正常槌骨柄对10～18 g压力即向内移位,放松后迅速恢复原位,少数人可能需要压力达到45 g,此因鼓膜张肌保护性收缩使槌骨柄向内移位,并于6～48小时后才恢复。固定的槌骨柄呈僵硬状态,用65～70 g压力
In this paper, 477 cases of mallet stems were manually surveyed, indicating that different degrees of tympanic muscle contraction of the tympanic muscle is a protective middle ear reflex, the author of exudative otitis media before the tympanic membrane for conventional mallet handle exploration. Adults under local anesthesia, pediatric or mental stress need general anesthesia. With general or metal spikes, placed on the mallet handle (tympanic membrane on the umbilical 1 ~ 2mm), and gradually increase the finger pressure, the activities of the shank often show tympanic surface light reflex changes and short sudden shift. Application of mechanical pressure gauge, the normal mallet handle 10 ~ 18 g pressure that is inward shift, relax quickly restored to its original position, a few people may need to reach 45 g pressure, which due to tympanic membrane protective contraction of the hammer handle inward Shift, and in 6 to 48 hours after recovery. Fixed mallet stem stiff, with 65 ~ 70 g pressure