摘要
目的分析听神经瘤显微术后影响有效听力的因素。方法对47例听神经瘤患者在术中听力监护下经枕下乙状窦后入路行显微切除术。记录肿瘤的大小、术前听力、肿瘤在内听道的充满程度。结果28例肿瘤直径≤15mm的患者中有效听力保留率为32.1%,19例肿瘤直径≥16mm的患者中有效听力保留率为5.3%,两者相差非常显著(P<0.05)。在25例患者中,影像学资料显示,16例内听道被肿瘤完全充满者有效听力保留率为25%,9例内听道部分充满者有效听力保留率为44.4%(P<0.05)。28例肿瘤直径≤15mm的患者中,16例术前保留有效听力者术后有效听力保留率为37.5%,12例术前为无效听力者术后有效听力保留率为25%(P>0.05)。结论肿瘤不完全充满内听道以及其直径≤15mm有利于有效听力保留,肿瘤直径<16mm的患者良好的术前听力也略有利于有效听力的保留,但无统计学意义。
Objective To analyze the factors of impact on postoperative serviceable hearing in patients with acoustic neuromata. Methods Acoustic neuromata were microsurgically removed in 47 patients through suboccipital retrosigmoid approach under acoustic monitoring. The size of tumor, the filling in internal auditory canal and the preoperative hearing were recorded. Results The postoperative serviceable hearing was preserved in 32.1% of 28 patients with tumors≤15 mm in diameters and 5.3% of 19 patients with tumors≥ 16 mm. There was significant difference in the percentage of the patients with postoperative serviceable hearing between both the groups （P〈0.01）. In 25 patients in whom MRI were performed, serviceable hearing was preserved in 25% of 16 patients with internal auditory canals stuffed with the tumors and in 44.4% of 9 patients with internal auditory canals stuffed partially （P〈0.05）. In the 28 patients with tumors≤15min in diameters, the postoperative serviceable hearing was preserved in 37.5% of 16 patients with preope-rative serviceable hearing and in 25% of 12 patients without preoperative serviceable hearing （P〉0.05）. Conclusions The tumor size and extent of tumor-occupied the internal auditory canals have significant effects on postoperative serviceable hearing in the patients with acoustic neuromata. Excellent preoperative hearing appears to be a good, but statistical）, insignificant, for the postoperative serviceable hearing in the patients with tumors 〈16 mm in diameter.
出处
《中国临床神经外科杂志》
2006年第3期137-139,共3页
Chinese Journal of Clinical Neurosurgery
关键词
听神经瘤
听力保留
肿瘤大小
内听道
术前听力
Acoustic neuroma
Heating preservation
Tumor size
Internal auditory canal
Preoperative hearing
