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Updated: Aug 13, 2026
Intrathecal Application of a Fluorescent Dye for the Identification of Cerebrospinal Fluid Leaks in Cochlear Malformation
Published on: February 29, 2020
[Cochlear implant in congenital malformations]
A Ramos1, J Cervera, A Valdivieso
1Servicio de Otorrinolaringología y Patología Cervico Facial, Hospital Universitario Insular de Gran Canaria. ramosorl@idecnet.com
Objective:
The main objective is to evaluate the complications and problems encountered in a population with inner ear congenital malformation undergoing cochlear implantation.
Materials And Methods:
The present study includes 33 patients with congenital inner ear malformation, from a total population of 346 cochlear implant patients, implanted from February 1993 to March 2004. Radiological evaluation and neurological exams were performed to all these patients in order to evaluate all the preoperative conditions.
Results:
The most common cochlear anomalies we found were: cochlear hypoplasia, Incomplete partition and Common cavity (n=15). In 4 cases an enlarge aqueduct was also associated to the cochlear anomaly. We also found 6 cases with labyrinthine anomalies. The surgical procedure was performed in 23 cases, and in 18 of them we obtained an electrical stimulation of the neural elements.
Conclusions:
There are no differences between patients with Incomplete Partition of the cochlea and mild Cochlea hypoplasia, if compared with those with normal cochlea. Severe malformations as Common Cavity or severe hypoplasia may have a higher rate of surgical complications and the outcome cannot be predicted.
