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KMID : 0917520020090020167
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Journal of Speech Sciences
2002 Volume.9 No. 2 p.167 ~ p.177
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The Aerodynamic Evaluation of Velopharyngeal Function after Uvulopatopharygoplasty
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Abstract
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Uvulopalatopharyngoplasty (UPPP) is one of the popular surgical procedure for snoring and sleep apnea syndrome. The main principle of this procedure is to reduce abundant velopharyngeal soft tissues resulting in a shortened soft palate, which may cause some alterations in speech sound.l The purpose of this study is to evaluate the change of velopharyngeal function after UPPP in the view of aerodynamics.
Thirty three patients who received uvulopalatopharyngoplasty for correcting snoring and sleep apnea were included in this study. The airflow, airflow rate and air pfressure during the production of oral and nasal consonants were measured before surgery and 4 week and 8 week after surgery.
The oral air flows and pressures for oral and nasal consonants were not changed after surgery. However, oral air pressure for nasal consonants were increased signifi-cantly after surgery. Tfhe nasal air flows for oral consonants were not changed after surgery, but for nasal consonnats were decreased at 8 weeks after surgery. Tfhe nasal flow rate for oral and nasal consonants were increased at 8 weeks after surgery. The uvulopalatopharyngoplasty may result in affecting the aerodynamic air streams during speech production.
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