Patients reported outcome post-cochlear implantation: how severe is their dizziness?

Abstract

Objectives: The reported prevalence of vestibular dysfunction after cochlear implantation (CI) is varies between different scientific papers. The aim of this study is to determine the reported post-implantation outcome in terms of dizziness, and to measure its impact on quality of life using the Dizziness handicap inventory (DHI).

Methods: This was a prospective questionnaire based study of postoperative cochlear implant patients. The questionnaire assessed the type and onset of dizziness in addition to the DHI.

Results: 122 patients were recruited in this study, which is the largest sample size in the literature reported so far. Dizziness was evident in 45.9% of the population post-CI and in 27% pre-CI. The commonest subtype of the dizziness was unsteadiness followed by lightheadedness. The dizziness was mild in most of the patients.

Conclusion: Although mild, dizziness is a common complaint post-cochlear implantation. An understanding of symptoms helps counsel patients preoperatively.

Keywords: Cochlear implants; DHI; Dizziness; Vertigo.

Figures

Figure 1

The different subtypes of dizziness observed by the patients and the rate of presentation (in percent) in post-CI patients whether it is new onset or persistent dizziness. Many patients had more than one description of their dizziness.

Figure 2

The severity of the dizziness in patients with persistent or new onset dizziness according to the DHI score.