Angel Ramos Macías

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OBJECTIVE To assess the conservation of residual hearing in recipients of the Nucleus 24 Contour Advance cochlear implant (CI) and the benefits of combined electrical and acoustic stimulation. STUDY DESIGN Prospective multicenter study. SETTING CI clinics in Western Europe. PATIENTS Adult candidates for conventional cochlear implantation with a(More)
The aim of this study was to investigate the efficacy of a direct acoustic cochlear implant (DACI) for speech understanding in noise in patients suffering from severe to profound mixed hearing loss (MHL) due to various etiologies compared to the preoperative best-aided condition. The study was performed at five tertiary referral centers in Europe (Belgium,(More)
CONCLUSIONS Hearing may be conserved in adults after implantation with the Nucleus Contour Advance perimodiolar electrode array. The degree of hearing preservation and the maximum insertion depth of the electrode array can vary considerably despite a defined surgical protocol. Residual hearing combined with electrical stimulation in the same ear can provide(More)
OBJECTIVE Otitis media with effusion (OME) has long been considered to be a noninfective disease resulting from a eustachian tube dysfunction. However, several microbiological techniques have shown bacteria in the middle ear fluids from patients with OME. Alloiococcus otitidis has been detected in the middle ear fluid from patients with OME. The exact role(More)
Multichannel electrode array design in cochlear implants has evolved into two major categories: straight and perimodiolar electrodes. When implanted, the former lies along the outer wall of the scala tympani, while the later are located closer to the modiolus, where the neural ends are. Therefore, a perimodiolar position of the electrode array could be(More)
The Nucleus CI24RE ‘Freedom' device offers higher stimulation rates and lower noise levels in action potential measurements (ECAPs) than previous devices. A study including ten European implant teams showed that the effect of changes in rate from 250 to 3500 pulses per second on tilt and curvature of the T and C profiles is insignificant. When changing rate(More)
INTRODUCTION The loss of vestibular function cannot be restored in all cases, but a vestibular prosthesis can improve balance in many of these patients. Vestibular implant (VI) research has mostly focused on the detection of angular velocity of the cephalic movements through gyroscopes and stimulation of the three-ampulla crests of the semicircular canals(More)
CONCLUSION Our study results confirm that it is possible to preserve preoperative hearing levels in the majority of subjects when using the Nucleus 24 Contour Advance provided that there is adherence to the major principles of 'soft surgery'. Our study group demonstrated that 71-86% of subjects showed preservation of preoperative hearing thresholds at 6(More)
OBJECTIVE: This multicenter study describes the effects of perimodiolar electrode position on 50 adult patients (31 with an implanted Nucleus 24 Contour perimodiolar hugging electrode array [Cochlear Limited, Lane Cove, NSW, Australia] and 19 with an implanted straight electrode array) with a severe-to-profound sensorineural hearing loss. MATERIALS AND(More)
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