0000000000224879
AUTHOR
Morant A
Cochlear implant complications and failures
Abstract Introduction Cochlear implantation is a relatively safe surgery performed on profound bilateral hearing loss patients. Its surgical indications have increased and the age of implantation has decreased over the last years. As with any other surgery, it presents complications; device failure is one of the most important, given its potential risk for the need to explant and reimplant the device. Objective To evaluate cochlear implant complications, determine possible causes and discuss medical and surgical management. Material and methods A retrospective study of cochlear implants was performed. A total of 246 implants over an eleven-year period were evaluated. The sample consisted of…
Distortion product otoacoustic emissions in healthy newborns: normative data.
Distortion product otoacoustic emissions (DPOAE) offer an alternative to transiently evoked otoacoustic emissions (TEOAE) as an audiological test. The former can be used as a screening technique, and may also provide frequency-specific information about the functional state of the cochlea. We recorded DPOAE in a group of healthy newborns to establish the Characteristics of a DPOAE “audiogram” (DP-gram) in this population. The DP-gram can be obtained with characteristics quite similar to those observed in adults, with two sharp peaks of maximum amplitude at F2 frequencies of 2 kHz and 5-6 kHz, and a decline in DPOAE amplitude in mid frequencies. The results confirm the limitations of DPOAE r…
Complicaciones y fallos de la implantación coclear
Resumen Introduccion La implantacion coclear es una cirugia con poca morbimortalidad que se realiza a pacientes con hipoacusia neurosensorial profunda bilateral. Con el paso del tiempo sus indicaciones han aumentado, y la edad de implantacion ha disminuido. Sin embargo, como cualquier cirugia, presenta complicaciones, y dentro de estas el fallo tecnico constituye un motivo de preocupacion por la inminente necesidad de reimplante. Objetivo Evaluar las complicaciones derivadas de la implantacion coclear, determinar sus causas y discutir el manejo terapeutico. Material y metodos Se realizo un estudio retrospectivo de los implantes cocleares realizados. Se obtuvieron un total de 246 implantes e…
[Paediatric cochlear implantation in the critical period of the auditory pathway, our experience].
Numerous experimental and clinical studies have suggested a critical or sensitive period in which the auditory pathway develops its greatest potential in terms of plasticity and learning. Early cochlear implantation performed in prelingual deaf children in this period provides a better prognosis for language acquisition. The aim of this study is to show the importance of cochlear implantation before this critical period ends.We conducted an observational, longitudinal, retrospective study of 57 children suffering profound prelingual bilateral sensorineural hearing loss who had received Advanced Bionics implants at our ENT department between June, 1998, and November, 2006. Data on their audi…
Auditory Neuropathy in Children
Auditory neuropathy is a sensorineural disorder characterized by absent or abnormal auditory brainstem evoked potentials and normal cochlear outer hair cell function. A variety of processes is thought to be involved in its pathophysiology and their influence on hearing may be different. We present here the diagnostic sequence and management of two new cases of auditory neuropathy in breastfeeding children.