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1977～1990年144例单侧听神经瘤患者,经枕下径路行肿瘤全切术并尽量保留其听觉功能。现就患者的年龄、性别、肿瘤大小、术前言语分辨率(SDS)、术前面神经和三叉神经功能以及听性脑干电反应(ABR)对术后有用听力(SDS>15%,言语接受阈<70dB)保留率的预测进行分析。①听神经瘤向后颅窝扩展≤5mm者25人,有15人(60%)术后保留了有用听力;而肿瘤>25mm者17人,仅3人(18%)
From 1977 to 1990, 144 patients with unilateral acoustic neuroma underwent total tumor resection through the suboccipital pathway and retained their auditory function as far as possible. The patient’s age, sex, tumor size, preoperative speech resolution (SDS), preoperative anterior nerve and trigeminal nerve function, and auditory brainstem electrical response (ABR) are used for effective hearing after surgery (SDS>15%, verbal acceptance The prediction of the retention rate of the threshold <70dB is analyzed. 1 25 neuromuscular tumors with posterior fossa extension ≤5 mm, 15 (60%) retained useful hearing after operation; 17 tumors >25 mm, only 3 (18%)