Dalston R M, Warren D W, Smith L R
Department of Surgery, School of Medicine, University of North Carolina, Chapel Hill 27599-7455.
Cleft Palate J. 1990 Oct;27(4):393-9; discussion 400-1. doi: 10.1597/1545-1569(1990)027<0393:tacosp>2.3.co;2.
Pressure-flow data were obtained on 20 noncleft adults with normal speech and 26 adults with repaired cleft palate. All subjects had adequate velopharyngeal function as determined by preliminary aerodynamic assessment. Subjects were considered to have adequate closure if they had velopharyngeal areas no greater than 0.049 cm2 during production of /p/ in the word "hamper." Although the subjects in both groups demonstrated velopharyngeal adequacy, the subjects with cleft palate produced speech with significantly less nasal airflow. In addition, their intra-oral pressure curve was shifted forward in time. These differences suggest that speakers with cleft palate and adequate velopharyngeal function make certain compensatory adjustments that may be necessary because of differences in velopharyngeal movement capabilities. The potential significance of this for treatment planning is discussed.
对20名具有正常语音的非腭裂成年人和26名腭裂修复后的成年人获取了压力-流量数据。通过初步的空气动力学评估确定，所有受试者均具有足够的腭咽功能。如果受试者在发“hamper”一词中的/p/音时腭咽面积不大于0.049平方厘米，则认为其具有足够的闭合功能。尽管两组受试者均表现出腭咽功能正常，但腭裂受试者产生语音时的鼻气流明显较少。此外，他们的口腔内压力曲线在时间上向前偏移。这些差异表明，具有足够腭咽功能的腭裂患者会进行某些代偿性调整，这可能是由于腭咽运动能力的差异所必需的。本文讨论了这一点对治疗计划的潜在意义。
