RUBENS VUONO DE BRITO NETO
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Otorrinolaringologia e Oftalmologia, Faculdade de Medicina - Docente
BAF, FOB - Docente
LIM/32 - Laboratório de Otorrinolaringologia, Hospital das Clínicas, Faculdade de Medicina
BAF, FOB - Docente
LIM/32 - Laboratório de Otorrinolaringologia, Hospital das Clínicas, Faculdade de Medicina
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- Is There Any Correlation between Spread of Excitation Width and the Refractory Properties of the Auditory Nerve in Cochlear Implant Users?(2021) SILVA, Juliana Coutinho da; GOFFI-GOMEZ, Maria Valeria Schmidt; TSUJI, Robinson Koji; BENTO, Ricardo; BRITO NETO, RubensBackground: The spread of excitation (SOE) and auditory nerve recovery function (REC) are objective measures recorded by neural response telemetry and may interfere in cochlear implant (CI) stimulation. Objective: To analyze and correlate SOE with the refractory periods in subjects with pre- and postlingual deafness implanted with different electrode arrays. Methods: This was a retrospective study of 323 ears separated by perimodiolar or straight arrays and by pre- or postlingually deaf recipients. Measures were collected intraoperatively on electrode 11. The SOE width was measured in millimeters at the 0.75 point of the curve, and the relative (tau) and absolute (t0) refractory periods were measured in microseconds. Results: There was a statistical correlation between the SOE and the t0 in the patients with postlingual deafness implanted with the perimodiolar array. The SOE width was statistically different between the straight and perimodiolar arrays and between the pre- and postlingual groups in the perimodiolar array. Tau was statistically different between the pre- and postlingual groups with the straight array and the t0, between the pre- and postlingual groups with the perimodiolar array. Neural response threshold and amplitude of the neural response were not statistically different among groups. Conclusion: There was a correlation between SOE width and t0 only in patients with acquired deafness. The findings suggest that different factors influence SOE and REC, considering SOE is different according to the electrode array and REC being different according the onset of deafness.
- Long-Term Outcome With an Active Middle Ear Implant in Patients to Bilateral Aural Atresia(2021) LOURENCONE, Luiz Fernando Manzoni; MATUELLA, Marina; SASSI, Tyuana Sandim da Silveira; DUTKA, Jeniffer de Cassia Rillo; BRITO, RubensObjective: To describe the audiological results and complications following active middle ear implant (AMEI) surgery in users with bilateral ear atresia. Study Design: Observational and retrospective longitudinal follow-up. Setting: A tertiary referral hospital for hearing rehabilitation and craniofacial malformations. Patients: Medical records of 27 patients with bilateral congenital aural atresia (34 ears) who underwent surgery for AMEI were reviewed. Data were analyzed using descriptive and inferential statistics. The alpha error was assumed to be 5%. Outcome Measures: Medical and technical complications and audiological results were observed during follow-up. Results: The median postoperative follow-up was 37.5 months (27.7-75.5 mo). Medical or technical complications occurred in 35.3% (n = 12) of patients during follow-up, 14.7% (n = 5) required surgical revision. The auditory thresholds in the free field improved from 53.75 dB (46.87-56.25) to 25 dB (21.25-32.5) after 6 months using the AMEI (p < 0.001) and remained stable till the last audiological evaluation (22.5: 21.25 26.25). Compared with the preoperative results, all speech perception tests also showed the benefits of AMEI at 6 months postoperatively and in the last audiological evaluation. Conclusions: Monitoring the use of AMEI in this sample demonstrated the safety of these implants compared with data available in the literature. The rates of medical and technical complications were consistent with data published by other groups. Finally, the audiological results remained stable during follow-up.