{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,8,20]],"date-time":"2023-08-20T15:40:56Z","timestamp":1692546056806},"reference-count":39,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2013,12,13]],"date-time":"2013-12-13T00:00:00Z","timestamp":1386892800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Laryngoscope"],"published-print":{"date-parts":[[2014,5]]},"abstract":"<jats:sec><jats:title>Objectives\/Hypothesis<\/jats:title><jats:p>To determine whether betamethasone (BM) reduces the cochlear toxicity of otic gentamicin (GM) if given together.<\/jats:p><\/jats:sec><jats:sec><jats:title>Study Design<\/jats:title><jats:p>Controlled animal study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Thirty\u2010four mice were assigned at random to receive intratympanic injections of either 0.1 % BM (11 mice), 0.3% GM (13 mice), or a combination of both (GM\/BM) with benzalkonium chloride (10 mice) in the left ear (treated) and saline on the right (untreated). Six injections were given on alternate days. Auditory brainstem response thresholds were assessed at 1 month, 2 months, and &gt;2 months.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There was a significantly greater degree of hearing loss in the BM\u2010treated ears compared to the untreated ears (6.48 dB hearing loss, <jats:italic>P<\/jats:italic>\u2009=\u2009.007) and in the GM\u2010treated ears compared to untreated ears (6.59 dB hearing loss, <jats:italic>P<\/jats:italic>\u2009=\u2009.010,). However, otic GM\/BM and benzalkonium chloride did not cause significant additional hearing loss compared with the untreated ears (3.56 dB hearing loss, <jats:italic>P<\/jats:italic>\u2009=\u2009.242).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Our data suggest that hearing loss caused by GM otic drops may be reduced by the inclusion of BM and benzalkonium chloride. Our finding that BM alone was associated with hearing loss suggests that the benzalkonium chloride may be the protective agent in combination otic drops.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>NA <jats:italic>Laryngoscope<\/jats:italic>, 124:1209\u20131213, 2014<\/jats:p><\/jats:sec>","DOI":"10.1002\/lary.24475","type":"journal-article","created":{"date-parts":[[2013,10,19]],"date-time":"2013-10-19T09:46:38Z","timestamp":1382175998000},"page":"1209-1213","source":"Crossref","is-referenced-by-count":3,"title":["Steroids in aminoglycoside\u2010containing ear drops: Do they reduce cochlear toxicity?"],"prefix":"10.1002","volume":"124","author":[{"given":"Brian W.","family":"Blakley","sequence":"first","affiliation":[{"name":"Department of Otolaryngology University of Manitoba Winnipeg Manitoba Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Saad","family":"Alsaleh","sequence":"additional","affiliation":[{"name":"Audiologist, Health Science Centre Winnipeg Manitoba Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zameel","family":"Dewji","sequence":"additional","affiliation":[{"name":"Practising Otolaryngologist Vancouver British Columbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kaiser","family":"Qureshy","sequence":"additional","affiliation":[{"name":"Practising Otolaryngologist Stony Creek Ontario Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sylvie","family":"Berard","sequence":"additional","affiliation":[{"name":"Rhinology &amp; 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