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Master's Dissertation
DOI
https://doi.org/10.11606/D.61.2015.tde-20072015-165236
Document
Author
Full name
Ana Flávia Rodrigues da Silva
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Bauru, 2015
Supervisor
Committee
Krook, Maria Ines Pegoraro (President)
Felix, Giedre Berretin
Gonçalves, Cristina Guedes de Azevedo Bento
Title in Portuguese
Achados videofluoroscópicos das estruturas velofaríngeas após a cirurgia primária do palato
Keywords in Portuguese
Avaliação
Fala
Fissura palatina
Insuficiência velofaríngea
Abstract in Portuguese
Introdução: A videofluoroscopia permite a avaliação da função velofaríngea devido a visualização da velofaringe por meio de imagens radiográficas dinâmicas durante a fala. Uma vez que a técnica de Furlow (F) preconiza uma maior extensão do véu palatino por meio do reposicionamento das fibras dos músculos do palato mole, este trabalho levanta a seguinte hipótese: Será que pacientes operados pela técnica de F que permaneceram com insuficiência velofaríngea (IVF) após a cirurgia apresentam mesma profundidade da nasofaringe, maior extensão e espessura do véu palatino e menor razão entre profundidade da nasofaringe e extensão do véu palatino do que aqueles operados pela técnica de von Langenbeck (vL) que também permaneceram com IVF? Objetivos: a) comparar os achados das medidas de videofluoroscopia em pacientes com IVF que receberam a técnica de F e os que receberam a de vL na palatoplastia primária; b) comparar as medidas dos achados citados com as medidas descritas por Subtelny (1957) para indivíduos normais. Metodologia: Os pacientes foram selecionados a partir de uma análise do banco de gravações dos exames de videofluoroscopia do Projeto Florida/HRAC/USP. A amostra foi constituída por 90 imagens videofloroscópicas em tomada lateral durante o repouso fisiológico obtidas de 27 pacientes que receberam a técnica de F e 63 que receberam a de vL na palatoplastia primária. Os pacientes, de ambos os sexos, permaneceram com IVF após a palatoplastia e realizaram o exame de videofluoroscopia para definição da melhor conduta para corrigir IVF, entre as idades de 4 e 14 anos. As imagens foram editadas em sequência aleatória em um DVD e as medidas das estruturas da nasofaringe foram realizadas por três fonoaudiólogas experientes e posteriormente comparadas com as medidas propostas por Subtelny (1957). Resultados: Os resultados revelaram diferenças estatisticamente significantes na comparação entre as técnicas cirúrgicas apenas para as medidas de extensão do véu palatino (médias = 26,51 mm para o grupo de F e 24,25 mm para o de vL; p=0,042). Na comparação com os valores de normalidade propostos por Subtelny (1957) foram encontradas medidas estatisticamente significantes apenas para as da razão entre profundidade da nasofaringe e extensão do véu palatino, sendo 96% de pacientes de F e 73% de vL fora do padrão de normalidade (p=0,025). Conclusão: A técnica cirúrgica utilizada na palatoplastia primária pode influenciar no tamanho das estruturas velofaríngeas mesmo naqueles pacientes que permaneceram com IVF.
Title in English
Videofluoroscopic findings of velopharyngeal structures after primary palatal surgery
Keywords in English
Cleft palate
Evaluation
Speech
Velopharyngeal insufficiency
Abstract in English
Introduction: Videofluoroscopy allows assessment of velopharyngeal function due to velopharyngeal view through dynamic radiographic images during speech. Since Furlow technique (F) favors a greater extent of the soft palate through the repositioning of the fibers of the soft palate muscles, this study raises the following questions: do patients operated by the F technique who remained with velopharyngeal insufficiency (VPI) after primary palatal surgery have the same depth of the nasopharynx, greater extent and thickness of the soft palate and lower ratio between the depth of the nasopharynx and extent of the soft palate than those operated by the von Langenbeck (vL) who also remained with VPI? Objectives: a) compare videofluoroscopy findings among patients who received the F technique and those who received the VL technique in the primary palatal surgery, and b) compare the videofluoroscopic findings of the present study with the ones obtained by Subtelny (1957) in normal individuals. Methods: Patients were selected from an analysis of the recordings bank of videofluoroscopy exams of the Florida Project / HRAC/USP. The sample consisted of 90 videofluoroscopic images taken in lateral view during physiologic rest obtained from 27 patients who received the F technique and 63 who received the vL in the primary palatal surgery. The patients of both genders, remained with VPI after surgery and underwent videofluoroscopy to define the best treatment to correct VPI, between the ages of 4 and 14 years. The images were edited in random order on a DVD and measurements of nasopharyngeal structures were performed by three experienced speech pathologists which were later compared with the measures proposed by Subtelny (1957) for normal individuals. Results: The results have shown statistically significant differences when comparing the surgical techniques only to the extension of the soft palate measures (means = 26.51 mm for the F patients and 24.25 mm for the vL patients; p=0.042). The comparison with the normal values proposed by Subtelny (1957) revealed statistically significant measures only for the ratio between depth of the nasopharynx and extension of the soft palate, showing 96% of F patients and 73% of vL patients with measures outside the normal range (p=0.025). Conclusion: The surgical technique used in primary palatoplasty can influence the size of the nasopharyngeal structures even in those patients who remained with VPI.
 
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Publishing Date
2015-07-28
 
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