{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,1]],"date-time":"2025-07-01T04:24:01Z","timestamp":1751343841675},"reference-count":15,"publisher":"Cambridge University Press (CUP)","issue":"8","license":[{"start":{"date-parts":[[2014,7,22]],"date-time":"2014-07-22T00:00:00Z","timestamp":1405987200000},"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":[[2014,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec id=\"S0022215114001480_sec1\"><jats:title>Objective:<\/jats:title><jats:p>This study describes the clinical features of up-beating vertical nystagmus observed during the seated\u2013supine positional (straight head-hanging) test in patients with benign paroxysmal positional vertigo.<\/jats:p><\/jats:sec><jats:sec id=\"S0022215114001480_sec2\"><jats:title>Methods:<\/jats:title><jats:p>A total of 190 patients with benign paroxysmal positional vertigo symptoms who had presented between 2009 and 2012 were enrolled for this retrospective case series. Twelve patients with positional up-beating vertical nystagmus, as confirmed by video-nystagmography during the seated\u2013supine positional test, were selected.<\/jats:p><\/jats:sec><jats:sec id=\"S0022215114001480_sec3\"><jats:title>Results:<\/jats:title><jats:p>The incidence and duration of symptoms of multiple canal benign paroxysmal positional vertigo were significantly lower compared with the other types of benign paroxysmal positional vertigo (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.029 and <jats:italic>p<\/jats:italic>\u00a0=\u00a00.048 respectively). Trauma was the leading aetiological factor in those patients (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.012). The average number of therapeutic manoeuvres required for the relief of symptoms in patients with multiple canal involvement was significantly higher than in the other groups (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.041).<\/jats:p><\/jats:sec><jats:sec id=\"S0022215114001480_sec4\"><jats:title>Conclusion:<\/jats:title><jats:p>In patients with benign paroxysmal positional vertigo, the presence of vertical up-beating nystagmus while lying down is a unique peripheral sign and could indicate multiple canal involvement. Therefore, the seated\u2013supine positional test should always be included in the test battery.<\/jats:p><\/jats:sec>","DOI":"10.1017\/s0022215114001480","type":"journal-article","created":{"date-parts":[[2014,7,22]],"date-time":"2014-07-22T13:24:35Z","timestamp":1406035475000},"page":"674-678","source":"Crossref","is-referenced-by-count":7,"title":["Vertical nystagmus during the seated\u2013supine positional (straight head-hanging) test in patients with benign paroxysmal positional vertigo"],"prefix":"10.1017","volume":"128","author":[{"given":"S","family":"Yetiser","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D","family":"Ince","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2014,7,22]]},"reference":[{"key":"S0022215114001480_ref14","doi-asserted-by":"publisher","DOI":"10.1177\/000348940511400204"},{"key":"S0022215114001480_ref5","doi-asserted-by":"publisher","DOI":"10.1080\/00016480701477594"},{"key":"S0022215114001480_ref13","doi-asserted-by":"publisher","DOI":"10.1159\/000091892"},{"key":"S0022215114001480_ref3","doi-asserted-by":"publisher","DOI":"10.1136\/jnnp.72.3.366"},{"key":"S0022215114001480_ref6","doi-asserted-by":"publisher","DOI":"10.1155\/2011\/483965"},{"key":"S0022215114001480_ref15","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-200011000-00029"},{"key":"S0022215114001480_ref2","first-page":"465","article-title":"Paroxysmal positional vertigo syndrome","volume":"20","author":"Honrubia","year":"1999","journal-title":"Am J Otol"},{"key":"S0022215114001480_ref12","doi-asserted-by":"publisher","DOI":"10.1016\/j.amjoto.2005.07.012"},{"key":"S0022215114001480_ref1","doi-asserted-by":"publisher","DOI":"10.1212\/WNL.31.3.304"},{"key":"S0022215114001480_ref4","doi-asserted-by":"publisher","DOI":"10.1080\/00016480510037023"},{"key":"S0022215114001480_ref7","doi-asserted-by":"publisher","DOI":"10.1080\/16513860510028275"},{"key":"S0022215114001480_ref8","first-page":"277","article-title":"Diagnosis and treatment strategy of the lateral semicircular canal canalolithiasis","volume":"25","author":"Asprella-Libonati","year":"2005","journal-title":"Acta Otorhinolaryngol Ital"},{"key":"S0022215114001480_ref9","doi-asserted-by":"publisher","DOI":"10.1001\/archotol.1994.01880360037007"},{"key":"S0022215114001480_ref10","doi-asserted-by":"publisher","DOI":"10.1080\/00016489950180360"},{"key":"S0022215114001480_ref11","doi-asserted-by":"publisher","DOI":"10.1177\/000348940911800206"}],"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\/S0022215114001480","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,4,22]],"date-time":"2019-04-22T01:37:08Z","timestamp":1555897028000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0022215114001480\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,7,22]]},"references-count":15,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2014,8]]}},"alternative-id":["S0022215114001480"],"URL":"https:\/\/doi.org\/10.1017\/s0022215114001480","relation":{},"ISSN":["0022-2151","1748-5460"],"issn-type":[{"value":"0022-2151","type":"print"},{"value":"1748-5460","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,7,22]]}}}