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目的考查不同元音材料对听力障碍儿童鼻流量和接触率的影响。方法对19名佩戴助听器的重度听力障碍儿童、19名植入人工耳蜗的重度听力障碍儿童和19名正常儿童进行鼻流量和接触率测定。结果三组儿童的鼻流量无显著性差异(P>0.05)。不同元音的鼻流量平均值从大到小依次为：/u/、/o/、/?/、/i/和/a/(P0.05). There was significant difference among 5 vowels on nasalance, ranked as/u/,/o/,/?/,/i/, and/a/(P<0.001). There was significant dif-ference among 3 groups on CQ, ranked as HA, normal, and CI group (P<0.001). There was significant difference on CQ among 5 vowels, ranked as /i/,/u/,/?/,/o/, and/a/ (P<0.001). Conclusion The voice and resonance should be assessed before speech therapy, which the speech therapy starts from the most correct vowel for children with profound hearing loss.