Siampara L, Mann S B, Panda N K, Mehra Y N
Department of Otolaryngology, Postgraduate Institute of Medical Education & Research, 160 012 Chandigarh, India.
Indian J Otolaryngol Head Neck Surg. 1997 Apr;49(2):107-11. doi: 10.1007/BF03023784.
AudioIogical tests including middle ear impedance test and vestibular function tests were administered to seventyfive patients of unilateral chronic suppurative otitis media. These patients were selected so as to exclude the influence of hereditory, drugs, systemic illness and the factors of aging. The subjects were subdivided into 3 groups : group 1 cases with central perforation; group 2 with marginal and group 3 with attic perforation respectively. On pure tone audiometry, 19 diseased ears (25.3%) showed sensorineural hearing loss of 40 dB or more at 4 KHz and 8 KHz. The difference in the mean bone conduction threshold of diseased and the nondiseased ears was statistically significant at 4 KHz and above. Results of specialised tests of hearing suggested cochlear pathology being responsible for sensorneural hearing loss. Electronystagmographic recording of saccades and bithermal caloric induced nystagmus revealed canal paresis on the diseased side in 4 patients (5.3%). These 4 patients had 15 years history of otorrhoea.
对75例单侧慢性化脓性中耳炎患者进行了听力学检查，包括中耳阻抗测试和前庭功能测试。选择这些患者以排除遗传、药物、全身性疾病和衰老因素的影响。受试者被分为3组：第1组为中央穿孔病例；第2组为边缘穿孔病例；第3组为鼓室上隐窝穿孔病例。在纯音听力测试中，19只患耳（25.3%）在4kHz和8kHz处显示感音神经性听力损失40dB或更高。患耳与未患耳的平均骨导阈值在4kHz及以上差异有统计学意义。听力专项测试结果表明，感音神经性听力损失是由耳蜗病变引起的。对扫视运动和冷热诱发眼震的眼震电图记录显示，4例患者（5.3%）患侧出现半规管轻瘫。这4例患者有15年的耳漏病史。
