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| Author(s): |
Alicia Graziela Noronha Silva
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Bauru. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Odontologia de Bauru (FOB/SDB) |
| Defense date: | 2015-02-13 |
| Examining board members: |
Inge Elly Kiemle Trindade;
Giedre Berretin Felix;
Cristina Guedes de Azevedo Bento Gonçalves
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| Advisor: | Inge Elly Kiemle Trindade |
| Abstract | |
Objective: To analyze velopharyngeal (VP) activity of subjects with VP dysfunction (VPD) by acoustic rhinometry (AR), as compared to rhinomanometry (RM) and videofluoroscopy (VF). Method: Prospective clinical study in 41 adults, both sexes, with repaired cleft palate±lip and residual VPD on clinical assessment. Variables analyzed: 1) AR (n=41): nasopharyngeal volumetric change (V) during the production of plosives [k], [p], [t], relatively to rest condition (reduction <3cm3 considered as absence of VP activity). 2) RM (n=41): VP orifice area (area > 0,05cm2 considered as inadequate closure), 3) VF (n=9): velar gap and pharyngeal walls movement (gap >2mm and mobility <50% considered as inadequate). The plosive [p] was used when comparing the three techniques. Results: A mean V decrease of 18% was observed during the production of [k], which was significantly lower (p<0.05) than the decrease reported for normals (30%). V values suggestive of VPD were observed in 59% of the subjects analyzed. Similar results were obtained for [p] and [t]. On RM, 85% of the subjects had inadequate closure; V did not vary according to the degree of closure. On VF, a significant gap was observed in 89%; the tongue did not contributed to VP closure. Agreement between techniques was of 51% (AR vs RM), 44% (AR vs VF) and 89% (RM vs VF). Conclusion: Acoustic rhinometry had no good accuracy as a diagnostic method of VPD, when compared to the two gold-standard methods used. Nevertheless, the technique showed potential as a method for monitoring the outcomes of clinical and surgical treatment of VPD. (AU) | |
| FAPESP's process: | 13/15089-7 - Comparative analysis of velopharyngeal activity assessed by acoustic rhinometry, rhinomanometry and videofluoroscopy |
| Grantee: | Alicia Graziela Noronha Silva Salgueiro |
| Support Opportunities: | Scholarships in Brazil - Master |