Hypernasality is a parameter of cleft palate speech that has been studied by many clinicians and speech pathologists. It appears to be a primary and secondary symptom of speech disorders in communication.
Generally, the degree of hypernasality has been assessed by the listener's judgement , but perceptual assessments have poor scientific reliability, so objective instruments have been needed to test hypernasality with diagnostic accuracy.
This study was analyzed the nasalance score using a Nasometer for cleft palate patients. The simple vowels-/a/, /i/, /e/, /u/- and the approximants-/j/, /w/- were tested for the degree of hypernasality after palatorrhapy and pharyngoplasty. The
phrases
containing long and short duration times were used in this study to assess hypernasality.
@ES The obtained results were as follows:
@EN 1. The author proposes that the diagnostic sampling vowels are effective to test the high vowel-/i/(55,5% nasalance)- and to test the low vowel-/a/ (20,75% nasalance)-.
The degree of hypernasality according to the nasalance ratio is classified as.
follows:
no nasal passage(0-20%)
mild nasal passage(20-25%)
high nasal passage(35-50%)
severe nasal passage(over 50%)
Furthermore, phrases containing no nasal consonants are effective in assessing mild hypernasality.
Fiberoptic views shows the open velopharyngeal port that resulted in hypernasality of cleft palate patients.
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