Navegando por Palavras-chave "acoustic"
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- ItemAcesso aberto (Open Access)Correlação entre a resistência nasal e diferentes parâmetros da rinometria acústica em crianças e adolescentes com e sem rinite alérgica(Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial, 2012-12-01) Wandalsen, Gustavo Falbo [UNIFESP]; Mendes, Aline Inês [UNIFESP]; Solé, Dirceu [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Acoustic rhinometry and rhinomanometry are important tests used to assess nasal function. The degree to which the parameters of these tests are correlated is yet to be established. OBJECTIVE: This paper aimed to study the correlations between nasal resistance (NR) and acoustic rhinometry parameters in children and adolescents with allergic rhinitis and controls. METHOD: Twenty patients with allergic rhinitis and 20 controls were enrolled. NR, volumes (V4, V5, V2-5), and minimal cross-sectional areas (MC1, MC2) were measured in three moments: baseline, after induction of nasal obstruction and after topical decongestant administration. RESULTS: Patients with allergic rhinitis had significant correlation between NR and all volumes (V5: r = -0.60) and with MC2. Among controls, MC1 was the parameter with the strongest correlation with NR at baseline (r = -0.53) and after decongestant administration. In the combined analysis, V5 had the highest correlation coefficients at baseline (r = -0.53), after obstruction (r = -0.58) and after decongestant (r = -0.46). CONCLUSIONS: Our data showed that NR and acoustic rhinometry parameters have negative and significant correlations. Nasal volumes are, in general, better correlated than minimal cross-sectional areas. V5 was the parameter with the highest correlation in the rhinitis group and in the combined analysis.
- ItemAcesso aberto (Open Access)Osteoma de meato acústico externo: relato de nove casos e revisão de literatura(ABORL-CCF Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, 2003-08-01) Testa, Jose Ricardo Gurgel [UNIFESP]; Pizarro, Gilberto U. [UNIFESP]; De Vuono, Isabela M.; Valeriano Neto, Maria Eugênia L. R. B.; Barros, Fernando; Universidade Federal de São Paulo (UNIFESP); Hospital Paulista de OtorrinolaringologiaThe osteoma of external acoustic meatus corresponds to an abnormal and benign bony growth, that is developed under the skin of the auditory canal and that can cause total or partial obstruction of the external acoustic meatus. STUDY DESIGN: Serie study. MATERIAL AND METHOD: We reported in this study nine cases of osteoma of external acoustic meatus. The patients' ages varied between 23 and 70 years old, being the average age 40,6 years. These patients were 5 of the feminine sex and 4 were of the masculine sex. RESULTS: The more common symptoms were hipoacusia, caused by the partial or total obstruction of the canal, appealing external otitis and also the accumulation of cerumen deep in the external auditory canal with difficult removal. CONCLUSION: We recommended in the presented cases surgical treatment, which had good evolution, with no recidivism.
- ItemAcesso aberto (Open Access)Parâmetros acústicos do som da deglutição normal(Universidade Federal de São Paulo (UNIFESP), 2010-05-26) Silva, Érika Henriques de Araújo Alves da [UNIFESP]; Gonçalves, Maria Inês Rebelo [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Objectives: To describe the acoustic parameters of the sound of the swallow of individuals without complaint and to relate to the acoustic parameters of the swallow (peak of frequency, peak of intensity and duration) with sex, volume and consistency of food. Material and Method: The sample was composed by 118 individuals (58 men and 60 women) with ages between 18 and 39 years (27,29 means age), without complaints with regard to the swallow and absence of former or current history of mechanic or neurological dysphagia, illnesses, traumas and/or surgeries in head and neck area and/or anatomical alterations of the verbal socket that could influence in the functions of speaking and swallowing, besides alteration of skin in the cervical region. It was used a cardiologic auscultation microphone adapted for capitation of the sounds of the swallow, located in the cervical region hardwired to the micron computer. Three swallows of saliva, liquid (water) and paste had been recorded (yoghurt), being the two last ones in the volumes of 1, 3, 5 and 10ml, in the total of 27 swallows for individual. The sounds recorded were analyzed by the software acoustics Audition analysis Adobe version 15.0. Results: The average values of the peak of frequency, peak of intensity and duration of the sound of the swallow in the men were respectively: 509,8191(Hz), -10,1211(dB) and 0,3976(s); the average values of the peak of frequency, peak of intensity and duration of the sound of the swallow in the women were respectively: 468,4373,4373(Hz), -14,0142(dB) and 0,4150(s). There was a significant statistics difference in the parameters peak of intensity of the sound of the swallow that was bigger in the men than in the women; when compared to the consistence, the duration of the sound of the swallow of the liquid was greater that in the paste for the volumes of 3, 5 and 10ml. Sound of the swallow with the tested volumes did not have statistics difference in the correlation of duration. Conclusions: There as not difference between the peaks of frequency and duration of the sound of the swallows of men and women. There was an increase in the peak of intensity of the men compared to the women. Considering the total of the sample, the duration of the sound of the swallow of the liquid was greater that the paste for the volumes of 3, 5 and 10ml. Correlation was not established between the duration of the sound of the swallow and volumes. There was an increase in duration of the sound of swallow with increasing volumes to liquid consistency, except with 10ml.
- ItemAcesso aberto (Open Access)Reconhecimento de fala em presença de ruído e suas relações com a supressão das emissões otoacústicas e o reflexo acústico(Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial, 2011-02-01) Lautenschlager, Larissa; Tochetto, Tania [UNIFESP]; Costa, Maristela Julio [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); UFSM Departamento de FonoaudiologiaSubjects presenting difficulties in understanding speech with competing sounds may have absence of otoacoustic emission suppression and the acoustic reflex. AIM: To study the performance of the efferent auditory system in normal hearing subjects complaining of difficulties to understand speech in noise. MATERIAL AND METHODS: A prospective study comprising 50 normal-hearing subjects aged from 19 to 32 years, reporting difficulties with speech recognition in noise (with complaints - WC) or not (with no complaints - WNC). Distortion product evoked otoacoustic emissions (DPOAEs) were tested at frequencies from 1500 to 6000 Hz.The contralateral acoustic reflex (CAR) was investigated from 500 to 4000 Hz. RESULTS: Groups differed statistically as to the occurrence of CAR in the left ear at 4000 Hz. At 1500 Hz, there was a statistically significant effect - absence of DPOAEs in the WC group in the right ear. In left ears, absence of DPOAE suppression was higher in the WC at 1500 Hz and 2000 Hz. CONCLUSION: An association between self-reported difficulties in discriminating speech in noise and the absence of contralateral acoustic reflex at 4000 Hz in the left ear was observed; there was also absence of the suppression effect of DPOAEs, especially at middle frequencies in both ears.