Andreassen M L, Leeper H A, MacRae D L
Department of Communicative Disorders, Elborn College, University of Western Ontario, London, Canada.
J Otolaryngol. 1991 Aug;20(4):237-42.
The purpose of this study was to evaluate changes that occur in certain aspects of vocal resonance and nasalization following adenoidectomy. Fourteen normal children were assessed prior to adenoidectomy and then at one month, three months, and six months following surgery. A unique combination of aerodynamic, acoustic, and perceptual measures were made. The aerodynamic component of the evaluation involved the use of posterior rhinomanometry to calculate nasal airway resistance (Rnaw) during relaxed nasal breathing. Acoustical measures consisted of "nasalance" scores (oral/nasal acoustic ratio) obtained during production of various speech stimuli. In addition, perceptual measures of change in vocal quality included listener judgments of severity and categorical ratings of nasality. Consistent patterns of change in vocal resonance and nasalization following adenoidectomy were identified. Clinical implications of these preliminary findings suggest that the maximum increase in nasality after tonsillectomy and adenoidectomy occurs at about one month, and referral to a speech-language pathologist should be considered if the hypernasality persists beyond three months.
本研究的目的是评估腺样体切除术后在语音共鸣和鼻音化某些方面所发生的变化。对14名正常儿童在腺样体切除术前进行评估，然后在术后1个月、3个月和6个月进行评估。采用了空气动力学、声学和感知测量的独特组合。评估的空气动力学部分涉及使用后鼻测压法计算静息鼻腔呼吸时的鼻气道阻力（Rnaw）。声学测量包括在发出各种语音刺激时获得的“鼻音平衡”分数（口/鼻声学比率）。此外，语音质量变化的感知测量包括听众对严重程度的判断和鼻音的分类评级。确定了腺样体切除术后语音共鸣和鼻音化的一致变化模式。这些初步研究结果的临床意义表明，扁桃体切除术和腺样体切除术后鼻音的最大增加发生在大约1个月时，如果鼻音过重持续超过3个月，则应考虑转诊至言语病理学家处。
