The prognostic value of round window electrical stimulation in cochlear implant patients.

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  • Author(s): Waltzman SB;Waltzman SB; Cohen NL; Shapiro WH; Hoffman RA
  • Source:
    Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery [Otolaryngol Head Neck Surg] 1990 Jul; Vol. 103 (1), pp. 102-6.
  • Publication Type:
    Journal Article; Research Support, U.S. Gov't, P.H.S.
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Wiley Country of Publication: England NLM ID: 8508176 Publication Model: Print Cited Medium: Print ISSN: 0194-5998 (Print) Linking ISSN: 01945998 NLM ISO Abbreviation: Otolaryngol Head Neck Surg Subsets: MEDLINE
    • Publication Information:
      Publication: 2023- : [Oxford] : Wiley
      Original Publication: [Rochester, Minn.] : The Academy, [c1981-
    • Subject Terms:
      Cochlear Implants*; Cochlea/*physiopathology ; Cochlear Diseases/*diagnosis ; Round Window, Ear/*physiopathology; Cochlear Diseases/diagnostic imaging ; Electric Stimulation ; Hearing Disorders/diagnosis ; Humans ; Preoperative Care ; Prognosis ; Radiography
    • Abstract:
      The use of preoperative round window stimulation has been advocated for its possible predictive value in cochlear implant patients. We have attempted to correlate cause of deafness, preoperative radiologic study, and postoperative stimulability and performance with preoperative stimulation. Round window stimulation procedures consisted of measurements of electrical thresholds and comfort levels, gap detection, and temporal difference limen. Radiologic studies were performed using high-resolution computerized semi-axial and coronal tomography with 1.5-millimeter overlapping cuts. Patient performance was measured using a standard audiologic test battery. Sixteen postlingually, profoundly deaf adults who received the Nucleus multichannel cochlear implant were studied. All 16 patients who responded to preoperative stimulation had acceptable CT scans for the ear operated on and stimulated postoperatively with the prosthesis. The lowest level at which a patient could reliably detect a gap between two signals ranged from 10 to 150 milliseconds, which was not predictive. For the temporal difference limen task, the patients who could reliably identify the longer of two pulses when the difference was less than 100 milliseconds did achieve varying amounts of open-set speech discrimination postoperatively. In summary, results indicate that the preoperative psychoacoustic electrical stimulation test battery provides useful information in predicting postoperative performance.
    • Grant Information:
      NS-17764 United States NS NINDS NIH HHS
    • Publication Date:
      Date Created: 19900701 Date Completed: 19900926 Latest Revision: 20170214
    • Publication Date:
      20240829
    • Accession Number:
      10.1177/019459989010300115
    • Accession Number:
      2117716