Short summary

Cochlear implant is an advanced type of hearing advice. It consists of an outer microphone, which picks up sound and sends it through an electrode into the cochlear.

With a cochlear implant people, that are profoundly deaf or have severe hearing losses, can get their hearing back.

Vertigo is one of the most common side effects to cochlear implant surgery. In this study we will investigate if one type of CI surgery (insertion of the electrode via paracentese of the round window) leads to less vertigo than another type of CI surgery (cochleostomy).

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Rationale

Vertigo is one of the most common side effects to CI surgery. Yet, it is unclear if one type of surgery (insertion of the electrode via paracentese of the round window) leads to less vertigo than another type of surgery (insertion of the electrode via cochleostomy).

At the same time it is unclear if the degree of vestibular damage after CI surgery can be correlated to the vertigo perceived of the patient.

We will be the first team to investigate the vestibular function in the two different types of surgery and the relation to the vertigo perceived of the patients. It will be examined with video head impulse test (vHIT) in a clinical, randomised trial with patients who will undergo CI surgery at the ENH-department at University Hospital of Southern Denmark (OUH).

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Description of the cohort

Inclusions criteria:

• Patients that are to undergo CI surgery at the ENT-department, OUH.
• Age 18-99.
• Profoundly deaf or hard hearing.

Data and biological material

The patients will be tested with video head impulse test (vHIT) to investigate their vestibular function. They will also be asked to fill out the Dizziness Handicap Inventory questionnaire.

Collaborating researchers and departments

Department of Otolaryngology, Odense University Hospital

• Leise Elisabeth Hviid Korsager, BSc
• Jens Højberg Wanscher, MD
• Christian Faber, MD
• Jesper Schmidt Hvass, MD

Publications associated with the project

Cochlear implantation in deaf adults: effect on quality of life. Wanscher, J.H., C.E. Faber, and A.M. Grontved, Ugeskr Laeger, 2006. 168 (33): p. 2656-9.

Surgical complications following cochlear implantation in adults based on a proposed reporting consensus, Jonas Jeppesen & Christian Emil Faber, Acta Otolaryngol. 2013 Oct; 133(10): 1012-1021.