Potenciais evocados auditivos de tronco encefálico e emissões otoacústicas evocadas transientes: achados em pacientes com doença renal crônica

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Potencial evocado auditivo de tronco encefálico em cães

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Potentials of e-Health in the social and epidemiological context of Latin America and the Caribbean

Includes bibliography

Triagem auditiva neonatal universal: a experiência de dois hospitais públicos no município de Campo Grande - MS, no período de janeiro de 2002 a dezembro de 2005

Pós-graduação em Pediatria - FMB

Potencial evocado auditivo para diagnóstico de surdez em gato com síndrome vestibular periférica

The brainstem auditory evoked potential is an electrodiagnostic test that allows a functional assessment of the auditory pathways from the middle ear to the brainstem. This test, in veterinary medicine, is not commonly used in Brazil. This paper reports the use of auditory evoked potential for deafness detection in a cat with unilateral peripheral vestibular syndrome secondary to otitis media.

Auditory steady state response in hearing assessment in infants with cytomegalovirus

OBJETIVO:Relatar o caso de um lactente com citomegalovírus congênito e disacusia neurossensorial progressiva, analisado por três métodos de avaliação auditiva.DESCRIÇÃO DO CASO:Na primeira avaliação auditiva, aos quatro meses de idade, o lactente apresentou ausência de Emissões Otoacústicas (EOA) e Potencial Evocado Auditivo de Tronco Encefálico (PEATE) dentro dos padrões de normalidade para a faixa etária, com limiar eletrofisiológico em 30dBnHL, bilateralmente. Com seis meses, apresentou ausência de PEATE bilateral em 100dBnHL. A avaliação comportamental da audição mostrou-se prejudicada devido ao atraso no desenvolvimento neuropsicomotor. Aos oito meses, foi submetido ao exame de Resposta Auditiva de Estado Estável (RAEE) e os limiares encontrados foram 50, 70, ausente em 110 e em 100dB, respectivamente para 500, 1.000, 2.000 e 4.000Hz, à direita, e 70, 90, 90 e ausente em 100dB, respectivamente para 500, 1.000, 2.000 e 4.000Hz, à esquerda.COMENTÁRIOS:Na primeira avaliação, o lactente apresentou alteração auditiva no exame de EOA e PEATE normal, que passou a ser alterado aos seis meses de idade. A intensidade da perda auditiva só pôde ser identificada pelo exame de RAEE, permitindo estabelecer a melhor conduta na adaptação de aparelho de amplificação sonora individual. Ressalta-se a importância do acompanhamento audiológico para crianças com CMV congênito.

The effects of auditory stimulation with music on heart rate variability in healthy women

OBJECTIVES: There are no data in the literature with regard to the acute effects of different styles of music on the geometric indices of heart rate variability. In this study, we evaluated the acute effects of relaxant baroque and excitatory heavy metal music on the geometric indices of heart rate variability in women. METHODS: We conducted this study in 21 healthy women ranging in age from 18 to 35 years. We excluded persons with previous experience with musical instruments and persons who had an affinity for the song styles. We evaluated two groups: Group 1 (n = 21), who were exposed to relaxant classical baroque musical and excitatory heavy metal auditory stimulation; and Group 2 (n = 19), who were exposed to both styles of music and white noise auditory stimulation. Using earphones, the volunteers were exposed to baroque or heavy metal music for five minutes. After the first music exposure to baroque or heavy metal music, they remained at rest for five minutes; subsequently, they were re-exposed to the opposite music (70-80 dB). A different group of women were exposed to the same music styles plus white noise auditory stimulation (90 dB). The sequence of the songs was randomized for each individual. We analyzed the following indices: triangular index, triangular interpolation of RR intervals and Poincaré plot (standard deviation of instantaneous beat-by-beat variability, standard deviation of the long-term RR interval, standard deviation of instantaneous beat-by-beat variability and standard deviation of the long-term RR interval ratio), low frequency, high frequency, low frequency/high frequency ratio, standard deviation of all the normal RR intervals, root-mean square of differences between the adjacent normal RR intervals and the percentage of adjacent RR intervals with a difference of duration greater than 50 ms. Heart rate variability was recorded at rest for 10 minutes. RESULTS: The triangular index and the standard deviation of the long-term RR interval indices were reduced during exposure to both music styles in the first group and tended to decrease in the second group whereas the white noise exposure decreased the high frequency index. We observed no changes regarding the triangular interpolation of RR intervals, standard deviation of instantaneous beat-by-beat variability and standard deviation of instantaneous beat-by-beat variability/standard deviation in the long-term RR interval ratio. CONCLUSION: We suggest that relaxant baroque and excitatory heavy metal music slightly decrease global heart rate variability because of the equivalent sound level.

O tratamento da doenca renal cronica pode afetar a audicao?

Introdução:Doença renal crônica (DRC) é definida pela presença de lesão renal levando à perda lenta e progressiva da função renal.Objetivo:Comparar testes auditivos entre pacientes com DRC submetidos a diferentes método de tratamento.Material e método:Estudo clínico transversal. Os grupos foram divididos de acordo com o método de tratamento: hemodiálise (n = 35), diálise peritoneal (n =15), conservador (n = 51) e 27 pacientes saudáveis (controle). Pacientes com idade superior a 60 anos, perda auditiva congênita, síndromes genéticas, infecções de orelha média e transplante renal foram excluídos da pesquisa. A avaliação audiológica incluiu audiometria tonal, emissões otoacústicas evocadas transientes e Potencial Evocado Auditivo de Tronco Encefálico (PEATE); e as variáveis avaliadas foram: sexo, idade, diagnóstico de hipertensão arterial e diabetes, estádio da DRC, tempo de diagnóstico do diabetes e da hipertensão arterial, duração da DRC e do tratamento.Resultados:A idade, presença de hipertensão arterial e tempo de DRC foram estatisticamente significantes e controlados. O grupo conservador apresentou piores limiares auditivos na audiometria tonal e o intervalo III-V do PEATE significativamente maior que o da hemodiálise.Conclusão:O tratamento conservador mostrou piores resultados na avaliação auditiva, independente de diabetes e de hipertensão, reforçando que os pacientes submetidos a tratamento para DRC devem realizar avaliação auditiva completa para melhor compreensão da doença e de seus efeitos sobre o sistema auditivo.

Potentials of biogas production from young bulls manure fed with different diets

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Efeito da variação de frequência e duração do estímulo no registro do P300 e MMN

Pós-graduação em Fonoaudiologia - FFC

A sedação sobre os potenciais evocados auditivos em cães

Brainstem auditory evoked potential (BAEP) reflects the electrical activity along the auditory pathway, from the cochlea to the brainstem, and contributes for the diagnosis of deafness in dogs. BAEP recording may require chemical restraint in some cases, so this study was designed to analyze the impact of sedation with morphine and acepromazine on the BAEP recordings of 16 dogs with normal hearing. BAEPs were recorded before and during sedation with a combination of morphine (0.5mgkg(-1)) and acepromazine (0.05mgkg(-1)) given intramuscularly. The protocol employed allowed safe and effective animal restraint. Sedation increased the latency of waves II and III and intervals I-III and I-V but did not interfere with wave identification. and showed to be safe in the dogs tested. Based on the current literature this is the first study which assessed the impact of sedation on BAEPs in dogs in Brazil.

Existence of solutions for a class of degenerate quasilinear elliptic equation in R-N with vanishing potentials

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Fractional fermion charges induced by axial-vector and vector gauge potentials and parity anomaly in planar graphenelike structures

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Auditory stimulation with music influences the geometric indices of heart rate variability in response to the postural change maneuver

It is poor in the literature the behavior of the geometric indices of heart rate variability (HRV) during the musical auditory stimulation. The objective is to investigate the acute effects of classic musical auditory stimulation on the geometric indexes of HRV in women in response to the postural change maneuver (PCM). We evaluated 11 healthy women between 18 and 25 years old. We analyzed the following indices: Triangular index, Triangular interpolation of RR intervals and Poincar plot (standard deviation of the instantaneous variability of the beat-to beat heart rate [SD1], standard deviation of long-term continuous RR interval variability and Ratio between the short - and long-term variations of RR intervals [SD1/SD2] ratio). HRV was recorded at seated rest for 10 min. The women quickly stood up from a seated position in up to 3 s and remained standing still for 15 min. HRV was recorded at the following periods: Rest, 0-5 min, 5-10 min and 10-15 min during standing. In the second protocol, the subject was exposed to auditory musical stimulation (Pachelbel-Canon in D) for 10 min at seated position before standing position. Shapiro-Wilk to verify normality of data and ANOVA for repeated measures followed by the Bonferroni test for parametric variables and Friedmans followed by the Dunns posttest for non-parametric distributions. In the first protocol, all indices were reduced at 10-15 min after the volunteers stood up. In the protocol musical auditory stimulation, the SD1 index was reduced at 5-10 min after the volunteers stood up compared with the music period. The SD1/SD2 ratio was decreased at control and music period compared with 5-10 min after the volunteers stood up. Musical auditory stimulation attenuates the cardiac autonomic responses to the PCM.

Swimming Exercise Changes Hemodynamic Responses Evoked by Blockade of Excitatory Amino Receptors in the Rostral Ventrolateral Medulla in Spontaneously Hypertensive Rats

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)