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Nasometric evaluation of resonance disorders: A norm study In Turkish.

Özlem Ünal-Logacev1, Ann W Kummer2, Cengiz Çetin3

  • 1İstanbul Medipol University, School of Health Sciences, Department of Speech and Language Therapy, Kavacık, Istanbul, Turkey.

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|January 26, 2020
PubMed
Summary

This study adapted the Simplified Nasometric Assessment Procedures-Revised (SNAP-R) for Turkish speakers, finding nasalance increases with age and varies by vowel type. The adapted test shows high sensitivity and specificity for evaluating hypernasality.

Keywords:
Cleft palateNasometerResonance disordersSensitivity and specificityTurkish

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Area of Science:

  • Speech-Language Pathology
  • Clinical Linguistics
  • Audiology

Background:

  • Hypernasality assessment is crucial for speech disorders, particularly in cleft palate cases.
  • Standardized tools are needed for accurate nasometric evaluation in diverse linguistic populations.
  • The Simplified Nasometric Assessment Procedures-Revised (SNAP-R) is a widely used tool for measuring nasalance.

Purpose of the Study:

  • To adapt the SNAP-R test for the Turkish language.
  • To establish normative nasalance data for Turkish children and adolescents.
  • To evaluate the sensitivity and specificity of the adapted SNAP-R for detecting hypernasality.

Main Methods:

  • The study involved 240 typically developing children and 40 children with cleft palate, aged 4-18 years.
  • Participants were grouped by age (4-7, 8-12, 13-18 years).
  • Data collection occurred in school settings and a speech-language therapy center.

Main Results:

  • A slight increase in nasalance scores was observed with advancing age.
  • No significant gender-based differences in nasalance were found.
  • Nasalance scores were influenced by vowel content, with high vowels yielding higher scores than low vowels.

Conclusions:

  • The adapted SNAP-R provides a valid and reliable tool for nasometric evaluation in Turkish.
  • The test demonstrates high sensitivity and specificity in identifying hypernasality.
  • Normative data will aid clinicians in diagnosing and managing speech sound disorders related to hypernasality in Turkish speakers.