ABSTRACT
Purpose
To investigate the effect of complete section of pharyngeal flap on speech hypernasality.
Methods
The study analyzed twenty-six individuals with repaired cleft palate±lip underwent pharyngeal flap surgery to treat velopharyngeal insufficiency and posteriorly underwent complete section of the flap due to the occurrence of respiratory symptoms. Hypernasality was determined by auditory-perceptual speech assessments and nasometry at 18 months after surgery, on average. Hypernasality was perceptually classified as: 1 = absent or 2 = present and determined by nasalance measurement during reading of sentences containing exclusively oral sounds, considering a cutoff of 27% (p ≤ 0.05).
Results
Perceptual assessment before section of the flap revealed that eight (31%) individuals showed normal resonance, while 18 (69%) presented hypernasality. After surgery, one (4%) subject remained with normal resonance and 25 (96%) presented hypernasality. According to nasometry, before surgery, 13 (57%) individuals presented nasalance scores lower than 27%, indicative of absence of hypernasality (mean = 15±8%) and ten (43%) presented nasalance scores indicative of hypernasality (mean = 41±7%). After surgery, four (17%) patients remained with scores indicative of absence of hypernasality (mean = 19±10%) and for 19 (83%) the nasalance scores were indicative of hypernasality (mean = 45±7%). There was no difference between perceptual and nasometric speech evaluations.
Conclusion
Surgery for complete section of pharyngeal flap caused deterioration of speech resonance, leading to the reappearance of hypernasality in most patients in this study.
Keywords:
Cleft palate; Velopharyngeal insufficiency; Speech; Speech perception; Speech disorders
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