title: False air-bone gap.
abstract: A single case is reported of a severely hearing-impaired child with a finding of a large air-bone gap on pure-tone audiometry on multiple tests. Exploratory surgery found normal middle ear function. Subsequent audiometry indicated the presence of a false air-bone gap resulting from vibrotactile responses. Test procedures for identifying vibrotactile responses are discussed.
mesh_terms: D001844:Bone Conduction; D002648:Child; D005189:False Positive Reactions; D034381:Hearing Loss / Q000175:diagnosis*; D006312:Hearing Loss, Bilateral / Q000175:diagnosis*; D006801:Humans; D008297:Male; D014110:Touch; D014732:Vibration