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Using the glasgow benefit plot as a prognostic instrument and for preoperative counseling in patients with otosclerosis
Östergötlands Läns Landsting, Reconstruction Centre, Department of ENT - Head and Neck Surgery VHN.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Clinical and Experimental Medicine, Oto-Rhiono-Laryngology and Head & Neck Surgery . Östergötlands Läns Landsting, Reconstruction Centre, Department of ENT - Head and Neck Surgery UHL.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Neuroscience and Locomotion.
2007 (English)In: Otology and Neurotology, ISSN 1531-7129, E-ISSN 1537-4505, Vol. 28, no 6, 739-744 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: The Glasgow Benefit Plot (GBP) is a graph showing the pure-tone thresholds preoperatively and postoperatively, and is meant to visualize the possible outcome of binaural hearing for individual patients. We used our database comprising a large number of patient data to test the usefulness of the GBP. STUDY DESIGN: Evaluation based on retrospective clinical data. SETTING: Tertiary referral center, University clinic. MAIN OUTCOME MEASURES: Audiometric assessment included bilateral preoperative and postoperative evaluation using conventional audiometry. Three preoperative groups (unilateral, asymmetric, and symmetric hearing impairment) were split into 6 postoperative categories in the GBP diagram. RESULTS: Considering the 509 operations, including 34 bilateral operations, the total outcome was distributed as follows: 34% resulted in bilateral normal hearing, 24% unilateral normal hearing (in operated ear), 14% still unilateral hearing impairment (in operated ear), 13% symmetric hearing impairment, 10% asymmetric hearing impairment (operated ear best), 5% still asymmetric hearing impairment (nonoperated ear best). The distribution of outcomes depended in part on the bone conduction level in the operated ear and in part on the hearing status in the contralateral ear. CONCLUSION: The GBP is a useful instrument that provides a means for judging the binaural hearing status. However, the outcome of stapes surgery for individual persons and for a group depends critically on the preoperative audiometric criteria for patients who are chosen for surgery. In cases of depressed bone conductions, the method does not indicate the upper limit for possible hearing improvement. A number of patients with combined hearing impairments were included in the present study population. In preoperative counseling, the GBP must be complemented with information with regard to the limitation of possible hearing improvement owing to the individual bone conduction level.

Place, publisher, year, edition, pages
2007. Vol. 28, no 6, 739-744 p.
Keyword [en]
Binaural hearing, Glasgow benefit plot, Hearing results, Otosclerosis, Stapes surgery
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-48155DOI: 10.1097/MAO.0b013e31812f6f8eOAI: oai:DiVA.org:liu-48155DiVA: diva2:269051
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Harder, HenrikMagnuson, Bengt

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Department of ENT - Head and Neck Surgery VHNFaculty of Health SciencesOto-Rhiono-Laryngology and Head & Neck Surgery Department of ENT - Head and Neck Surgery UHLDepartment of Neuroscience and Locomotion
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