Related Experiment Video
Updated: Mar 24, 2026
09:10
Performing Intracochlear Electrocochleography During Cochlear Implantation
Published on: March 8, 2022
5.2K
Cochlear Implantation in Canal Wall Down Mastoid Cavities
Jacob B Hunter1, Shanik J Fernando2, Marc L Bennett2
1The Otology Group, Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA jacob.b.hunter@vanderbilt.edu.
Summary
Managing cochlear implant (CI) in canal wall down (CWD) mastoid cavities presents challenges. Open cavities showed fewer complications than overclosed ones in this study.
Area of Science:
- Otolaryngology
- Neurosurgery
- Audiology
Background:
- Cochlear implantation in canal wall down (CWD) mastoid cavities poses management challenges.
- Key decisions include external auditory meatus overclosure, staged implantation, and Eustachian tube plugging.
Purpose of the Study:
- To describe the experience and outcomes of cochlear implantation in adult patients with CWD mastoid cavities.
- To evaluate the impact of external auditory meatus management on complications.
Main Methods:
- Retrospective evaluation of adult patients (≥18 years) undergoing cochlear implantation in CWD cavities.
- Categorization based on external auditory meatus management: overclosed (7 patients) versus open (2 patients).
- Follow-up assessment for complications, including meatal dehiscence.
Main Results:
- Two patients with overclosed cavities developed meatal dehiscences requiring intervention.
- No complications were observed in the two patients with maintained open cavities.
- Average follow-up was 36.7 months (median 22.8 months).
Conclusions:
- Maintaining an open external auditory meatus may be associated with fewer complications after cochlear implantation in CWD cavities.
- Further research is warranted to optimize surgical techniques for CI in CWD cavities.
Related Concept Videos
01:13The Cochlea
52.4K
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
52.4K
01:16Anatomy of the Ear
13.3K
Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
13.3K
01:15Auditory Pathway
8.7K
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
8.7K