Effects of Suspension Pharyngeal Flap on Speech in Filipino Individuals with Velopharyngeal Insufficiency.

Introduction: This study investigated the effects of suspension pharyngeal flap surgery for velopharyngeal insufficiency (VPI) due to cleft palate.
Methods: Ten Filipino individuals (mean age = 20.63 years, range = 8.4-34.9 years) with a cleft palate who underwent suspension pharyngeal flap surgery for VPI were included in this study. Perceptual and instrumental speech assessments were conducted at two different time points: before surgery (data point 1) and after surgery (data point 2, range = 4-26 weeks postoperatively). Speech intelligibility in different contexts and satisfaction with speech were assessed by the participants themselves using a self-report questionnaire. Additionally, the risk for obstructive sleep apnea was assessed using the Berlin Questionnaire.
Results: Velopharyngeal gap size significantly decreased after the surgery. Additionally, significant improvements in speech understandability and acceptability were observed following the suspension pharyngeal flap procedure. Besides, a significant reduction in hypernasality, nasal emission, and the occurrence of passive articulation errors was seen. No difference in the occurrence of active articulation errors was observed when comparing data pre- and post-surgery. The ten individuals reported to be significantly more intelligible in different contexts after surgery.
Conclusion: Improved speech was observed in individuals who received the suspension pharyngeal flap procedure. This procedure also positively influences an individual's intelligibility in different contexts in daily life. In individuals with persisting active articulation errors, post-surgery speech therapy will still be necessary.
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