Evaluation of temporal difference limen in preoperative non-invasive ear canal audiometry as a predictive factor for speech perception after cochlear implantation

  • Saku T. Sinkkonen | saku.sinkkonen@gmail.com Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital, Finland.
  • Lars Kronlund Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital, Finland.
  • Johannes Hautamäki Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital, Finland.
  • Jussi Jero Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital, Finland.
  • Antti A. Aarnisalo Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital, Finland.
  • Erna Kentala Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital, Finland.

Abstract

The temporal difference limen (TDL) can be measured with noninvasive electrical ear canal stimulation. The objective of the study wa to determine the role of preoperative TDL measurements in predicting patients’ speech perception after cochlear implantation. We carried out a retrospective chart analysis of fifty-four cochlear implant (CI) patients with preoperative TDL and postoperative bisyllabic word recognition measurements in Helsinki University Central Hospital between March 1994 and March 2011. Our results show that there is no correlation between TDL and postoperative speech perception. However, patient’s advancing age correlates with longer TDL but notdirectly with poorer speech perception. The results are in line with previous results concerning the lack of predictive value of preoperativ TDL measurements in CI patients.

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Author Biographies

Lars Kronlund, Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital
 
Johannes Hautamäki, Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital
 
Jussi Jero, Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital
 
Antti A. Aarnisalo, Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital
 
Erna Kentala, Department of Otorhinolaryngology, Head & Neck Surgery, Helsinki University Central Hospital
 
Published
2014-02-27
Section
Original Articles
Keywords:
cochlear implant outcome, electrical ear canal stimulation, speech perception, temporal difference limen.
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How to Cite
Sinkkonen, S., Kronlund, L., Hautamäki, J., Jero, J., Aarnisalo, A., & Kentala, E. (2014). Evaluation of temporal difference limen in preoperative non-invasive ear canal audiometry as a predictive factor for speech perception after cochlear implantation. Audiology Research, 4(1). https://doi.org/10.4081/audiores.2014.91