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Velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry

Acoustic rhinometry is routinely used for the evaluation of nasal patency. OBJECTIVE: To investigate whether the technique is able to identify the impairment of velopharyngeal (VP) activity in individuals with clinical diagnosis of velopharyngeal insufficiency (VPI). METHODS: Twenty subjects with re...

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Autores principales: TRINDADE, Inge Elly Kiemle, ARAÚJO, Bruna Mara Adorno Marmontel, TEIXEIRA, Ana Claudia Martins Sampaio, da SILVA, Andressa Sharllene Carneiro, TRINDADE-SUEDAM, Ivy Kiemle
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Faculdade de Odontologia de Bauru da Universidade de São Paulo 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4126829/
https://www.ncbi.nlm.nih.gov/pubmed/25141205
http://dx.doi.org/10.1590/1678-775720130673
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author TRINDADE, Inge Elly Kiemle
ARAÚJO, Bruna Mara Adorno Marmontel
TEIXEIRA, Ana Claudia Martins Sampaio
da SILVA, Andressa Sharllene Carneiro
TRINDADE-SUEDAM, Ivy Kiemle
author_facet TRINDADE, Inge Elly Kiemle
ARAÚJO, Bruna Mara Adorno Marmontel
TEIXEIRA, Ana Claudia Martins Sampaio
da SILVA, Andressa Sharllene Carneiro
TRINDADE-SUEDAM, Ivy Kiemle
author_sort TRINDADE, Inge Elly Kiemle
collection PubMed
description Acoustic rhinometry is routinely used for the evaluation of nasal patency. OBJECTIVE: To investigate whether the technique is able to identify the impairment of velopharyngeal (VP) activity in individuals with clinical diagnosis of velopharyngeal insufficiency (VPI). METHODS: Twenty subjects with repaired cleft palate and inadequate velopharyngeal function (IVF) and 18 non-cleft controls with adequate velopharyngeal function (AVF), adults, of both genders, were evaluated. Area-distance curves were obtained during VP rest and speech activity, using an Eccovision Acoustic Rhinometry system. Volume was determined by integrating the area under the curve at the segment corresponding to the nasopharynx. VP activity (∆V) was estimated by the absolute and relative differences between nasopharyngeal volume at rest (Vr) and during an unreleased /k/ production (Vk). The efficiency of the technique to discriminate IVF and AVF was assessed by a ROC curve. RESULTS: Mean Vk and Vr values (±SD) obtained were: 23.2±3.6 cm(3) and 15.9±3.8 cm(3) (AVF group), and 22.7±7.9 cm(3) and 20.7±7.4 cm(3) (IVF group), corresponding to a mean ∆V decay of 7.3 cm(3) (31%) for the AVF group and a significantly smaller ∆V decay of 2.0 cm3 (9%) for the IVF group (p<0.05). Seventy percent of the IVF individuals showed a ∆V suggesting impaired VP function (below the cutoff score of 3.0 cm(3) which maximized both sensitivity and specificity of the test), confirming clinical diagnosis. CONCLUSION: Acoustic rhinometry was able to identify, with a good discriminatory power, the impairment of VP activity which characterizes VPI.
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spelling pubmed-41268292014-08-11 Velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry TRINDADE, Inge Elly Kiemle ARAÚJO, Bruna Mara Adorno Marmontel TEIXEIRA, Ana Claudia Martins Sampaio da SILVA, Andressa Sharllene Carneiro TRINDADE-SUEDAM, Ivy Kiemle J Appl Oral Sci Original Articles Acoustic rhinometry is routinely used for the evaluation of nasal patency. OBJECTIVE: To investigate whether the technique is able to identify the impairment of velopharyngeal (VP) activity in individuals with clinical diagnosis of velopharyngeal insufficiency (VPI). METHODS: Twenty subjects with repaired cleft palate and inadequate velopharyngeal function (IVF) and 18 non-cleft controls with adequate velopharyngeal function (AVF), adults, of both genders, were evaluated. Area-distance curves were obtained during VP rest and speech activity, using an Eccovision Acoustic Rhinometry system. Volume was determined by integrating the area under the curve at the segment corresponding to the nasopharynx. VP activity (∆V) was estimated by the absolute and relative differences between nasopharyngeal volume at rest (Vr) and during an unreleased /k/ production (Vk). The efficiency of the technique to discriminate IVF and AVF was assessed by a ROC curve. RESULTS: Mean Vk and Vr values (±SD) obtained were: 23.2±3.6 cm(3) and 15.9±3.8 cm(3) (AVF group), and 22.7±7.9 cm(3) and 20.7±7.4 cm(3) (IVF group), corresponding to a mean ∆V decay of 7.3 cm(3) (31%) for the AVF group and a significantly smaller ∆V decay of 2.0 cm3 (9%) for the IVF group (p<0.05). Seventy percent of the IVF individuals showed a ∆V suggesting impaired VP function (below the cutoff score of 3.0 cm(3) which maximized both sensitivity and specificity of the test), confirming clinical diagnosis. CONCLUSION: Acoustic rhinometry was able to identify, with a good discriminatory power, the impairment of VP activity which characterizes VPI. Faculdade de Odontologia de Bauru da Universidade de São Paulo 2014 /pmc/articles/PMC4126829/ /pubmed/25141205 http://dx.doi.org/10.1590/1678-775720130673 Text en http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
TRINDADE, Inge Elly Kiemle
ARAÚJO, Bruna Mara Adorno Marmontel
TEIXEIRA, Ana Claudia Martins Sampaio
da SILVA, Andressa Sharllene Carneiro
TRINDADE-SUEDAM, Ivy Kiemle
Velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry
title Velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry
title_full Velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry
title_fullStr Velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry
title_full_unstemmed Velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry
title_short Velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry
title_sort velar activity in individuals with velopharyngeal insufficiency assessed by acoustic rhinometry
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4126829/
https://www.ncbi.nlm.nih.gov/pubmed/25141205
http://dx.doi.org/10.1590/1678-775720130673
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