{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T22:04:16Z","timestamp":1781647456633,"version":"3.54.5"},"reference-count":0,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2006,9,25]],"date-time":"2006-09-25T00:00:00Z","timestamp":1159142400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Laryngol. Otol."],"published-print":{"date-parts":[[2007,3]]},"abstract":"<jats:p>Objectives: To evaluate the predictive role of the audiometric Carhart's notch for the assessment of middle-ear pathology prior to surgical intervention.<\/jats:p><jats:p>Method: In this retrospective analysis, a total of 315 operated ears of 305 patients were evaluated regarding their pre-operative pure tone audiograms and peri-operative findings. The probable relationship between the middle-ear pathologies found and the Carhart's notch found on pre-operative pure tone audiometry was investigated. Patients with conductive hearing loss who obtained at least a 10\u00a0dB improvement (at 1 and 2 kHz frequencies) in their bone conduction threshold post-operatively were included in the Carhart's notch group. The pathologies underlying Carhart's notch were compared.<\/jats:p><jats:p>Results: Three hundred and fifteen ears of 305 consecutive patients with conductive hearing loss were operated on due to middle-ear pathology. In patients with otosclerosis and tympanosclerosis, a Carhart's notch was seen at 2 kHz in 28 (93 per cent) patients but at 1 kHz in only two (7 per cent). However, in patients with chronic otitis media, a Carhart's notch was seen at 1 kHz in 10 (55 per cent) patients and at 2 kHz in eight (45 per cent) patients.<\/jats:p><jats:p>Conclusions: Otitis media with effusion, tympanosclerosis and congenital malformations should be considered in the differential diagnosis of a patient with a Carhart's notch seen on pure tone audiometry. A Carhart's notch at 2 kHz indicates stapes footplate fixation, whereas one at 1 kHz indicates a mobile stapes footplate; the footplate mobility can thus be predicted pre-operatively.<\/jats:p>","DOI":"10.1017\/s0022215106003343","type":"journal-article","created":{"date-parts":[[2006,9,25]],"date-time":"2006-09-25T10:01:17Z","timestamp":1159178477000},"page":"219-221","source":"Crossref","is-referenced-by-count":22,"title":["Predictive role of Carhart's notch in pre-operative assessment for middle-ear surgery"],"prefix":"10.1017","volume":"121","author":[{"given":"H","family":"Yasan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2006,9,25]]},"container-title":["The Journal of Laryngology &amp; Otology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0022215106003343","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,4,11]],"date-time":"2019-04-11T21:55:39Z","timestamp":1555019739000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0022215106003343\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2006,9,25]]},"references-count":0,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2007,3]]}},"alternative-id":["S0022215106003343"],"URL":"https:\/\/doi.org\/10.1017\/s0022215106003343","relation":{},"ISSN":["0022-2151","1748-5460"],"issn-type":[{"value":"0022-2151","type":"print"},{"value":"1748-5460","type":"electronic"}],"subject":[],"published":{"date-parts":[[2006,9,25]]}}}