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Persistent geotropic direction-changing positional nystagmus with a null plane: The light cupula
Objectives/Hypothesis The aim of this study was to characterize the clinical features and typical positional nystagmus in patients with persistent geotropic direction‐changing positional nystagmus (DCPN) and address the possible pathophysiology of the disease. Furthermore, the proportion of light cu...
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| Published in: | The Laryngoscope 2014-01, Vol.124 (1), p.E15-E19 |
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| Language: | English |
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| container_title | The Laryngoscope |
| container_volume | 124 |
| creator | Kim, Chang-Hee Kim, Min-Beom Ban, Jae Ho |
| description | Objectives/Hypothesis
The aim of this study was to characterize the clinical features and typical positional nystagmus in patients with persistent geotropic direction‐changing positional nystagmus (DCPN) and address the possible pathophysiology of the disease. Furthermore, the proportion of light cupula among the patients showing geotropic DCPN was investigated to assume the incidence of light cupula in those patients.
Study Design
Prospective case series.
Methods
We conducted a prospective case series study in 19 patients with persistent geotropic DCPN. Positional nystagmus during the bow and lean test and the supine head roll test was analyzed using videonystagmography.
Results
All of the 19 patients showed persistent geotropic DCPN without latency. A null plane in which the nystagmus ceases was identified in all of 19 patients, and the intensity of nystagmus was stronger on one side in13 patients (68%) on supine head roll test. Overall, the affected side could be identified in 18 patients (95%). About 14.2% (19 of 134) of patients with geotropic DCPN could be diagnosed as having light cupula in the horizontal semicircular canal.
Conclusions
The patients with light cupula show persistent geotropic DCPN without latency. Affected side(s) can be determined by the direction and intensity of the characteristic positional nystagmus and the side of the null plane. The pathophysiology and treatment of light cupula still remain to be elucidated.
Level of Evidence
4. Laryngoscope, 124:E15–E19, 2014 |
| doi_str_mv | 10.1002/lary.24048 |
| format | article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1490754588</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3162224041</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3958-4467f0ca7c3aea02d8e565e8a05f689ce116aaf29d7c6fc480e6d27dc6dab61a3</originalsourceid><addsrcrecordid>eNp9kc1u1DAUhS0EokNhwwNUltigSmn9b4ddVfUHNGoBFQErc-s4GbeeJNiJyrw9SaftggWrK_l-58j-jNBbSg4oIewwQtocMEGEeYYWVHJaiLKUz9FiWvLCSPZjB73K-YYQqrkkL9EOE1QpYfQC_frsUw558O2AG98NqeuDw1VI3g2hawu3grYJbYP7Lof5BCJuN3mAZj1mfBeGFQbcjjHiPkLrP-CrlccxNKsBu7EfI7xGL2qI2b95mLvo2-nJ1fF5sbw8-3h8tCwcL6UphFC6Jg604-CBsMp4qaQ3QGStTOk8pQqgZmWlnaqdMMSriunKqQquFQW-i95ve_vU_R59Huw6ZOfjfKtuzJaKkmgppDET-u4f9KYb0_SymVKlIYIKPlH7W8qlLufka9unsJ5UW0rs7N3O3u299wnee6gcr9e-ekIfRU8A3QJ3IfrNf6rs8ujrz8fSYpuZ_-fPUwbSrVWaa2m_X5zZT0KcfinZuWX8L9a4nfs</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1469804143</pqid></control><display><type>article</type><title>Persistent geotropic direction-changing positional nystagmus with a null plane: The light cupula</title><source>Wiley-Blackwell Read & Publish Collection</source><creator>Kim, Chang-Hee ; Kim, Min-Beom ; Ban, Jae Ho</creator><creatorcontrib>Kim, Chang-Hee ; Kim, Min-Beom ; Ban, Jae Ho</creatorcontrib><description>Objectives/Hypothesis
The aim of this study was to characterize the clinical features and typical positional nystagmus in patients with persistent geotropic direction‐changing positional nystagmus (DCPN) and address the possible pathophysiology of the disease. Furthermore, the proportion of light cupula among the patients showing geotropic DCPN was investigated to assume the incidence of light cupula in those patients.
Study Design
Prospective case series.
Methods
We conducted a prospective case series study in 19 patients with persistent geotropic DCPN. Positional nystagmus during the bow and lean test and the supine head roll test was analyzed using videonystagmography.
Results
All of the 19 patients showed persistent geotropic DCPN without latency. A null plane in which the nystagmus ceases was identified in all of 19 patients, and the intensity of nystagmus was stronger on one side in13 patients (68%) on supine head roll test. Overall, the affected side could be identified in 18 patients (95%). About 14.2% (19 of 134) of patients with geotropic DCPN could be diagnosed as having light cupula in the horizontal semicircular canal.
Conclusions
The patients with light cupula show persistent geotropic DCPN without latency. Affected side(s) can be determined by the direction and intensity of the characteristic positional nystagmus and the side of the null plane. The pathophysiology and treatment of light cupula still remain to be elucidated.
Level of Evidence
4. Laryngoscope, 124:E15–E19, 2014</description><identifier>ISSN: 0023-852X</identifier><identifier>EISSN: 1531-4995</identifier><identifier>DOI: 10.1002/lary.24048</identifier><identifier>PMID: 24166487</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Adult ; Aged ; Benign paroxysmal positional vertigo ; direction-changing positional nystagmus ; Eye Movement Measurements ; Female ; geotropic nystagmus ; head roll test ; Humans ; Light ; Male ; Medical research ; Middle Aged ; null plane ; Nystagmus, Pathologic - physiopathology ; Prospective Studies</subject><ispartof>The Laryngoscope, 2014-01, Vol.124 (1), p.E15-E19</ispartof><rights>2013 The American Laryngological, Rhinological and Otological Society, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3958-4467f0ca7c3aea02d8e565e8a05f689ce116aaf29d7c6fc480e6d27dc6dab61a3</citedby><cites>FETCH-LOGICAL-c3958-4467f0ca7c3aea02d8e565e8a05f689ce116aaf29d7c6fc480e6d27dc6dab61a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24166487$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kim, Chang-Hee</creatorcontrib><creatorcontrib>Kim, Min-Beom</creatorcontrib><creatorcontrib>Ban, Jae Ho</creatorcontrib><title>Persistent geotropic direction-changing positional nystagmus with a null plane: The light cupula</title><title>The Laryngoscope</title><addtitle>The Laryngoscope</addtitle><description>Objectives/Hypothesis
The aim of this study was to characterize the clinical features and typical positional nystagmus in patients with persistent geotropic direction‐changing positional nystagmus (DCPN) and address the possible pathophysiology of the disease. Furthermore, the proportion of light cupula among the patients showing geotropic DCPN was investigated to assume the incidence of light cupula in those patients.
Study Design
Prospective case series.
Methods
We conducted a prospective case series study in 19 patients with persistent geotropic DCPN. Positional nystagmus during the bow and lean test and the supine head roll test was analyzed using videonystagmography.
Results
All of the 19 patients showed persistent geotropic DCPN without latency. A null plane in which the nystagmus ceases was identified in all of 19 patients, and the intensity of nystagmus was stronger on one side in13 patients (68%) on supine head roll test. Overall, the affected side could be identified in 18 patients (95%). About 14.2% (19 of 134) of patients with geotropic DCPN could be diagnosed as having light cupula in the horizontal semicircular canal.
Conclusions
The patients with light cupula show persistent geotropic DCPN without latency. Affected side(s) can be determined by the direction and intensity of the characteristic positional nystagmus and the side of the null plane. The pathophysiology and treatment of light cupula still remain to be elucidated.
Level of Evidence
4. Laryngoscope, 124:E15–E19, 2014</description><subject>Adult</subject><subject>Aged</subject><subject>Benign paroxysmal positional vertigo</subject><subject>direction-changing positional nystagmus</subject><subject>Eye Movement Measurements</subject><subject>Female</subject><subject>geotropic nystagmus</subject><subject>head roll test</subject><subject>Humans</subject><subject>Light</subject><subject>Male</subject><subject>Medical research</subject><subject>Middle Aged</subject><subject>null plane</subject><subject>Nystagmus, Pathologic - physiopathology</subject><subject>Prospective Studies</subject><issn>0023-852X</issn><issn>1531-4995</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNp9kc1u1DAUhS0EokNhwwNUltigSmn9b4ddVfUHNGoBFQErc-s4GbeeJNiJyrw9SaftggWrK_l-58j-jNBbSg4oIewwQtocMEGEeYYWVHJaiLKUz9FiWvLCSPZjB73K-YYQqrkkL9EOE1QpYfQC_frsUw558O2AG98NqeuDw1VI3g2hawu3grYJbYP7Lof5BCJuN3mAZj1mfBeGFQbcjjHiPkLrP-CrlccxNKsBu7EfI7xGL2qI2b95mLvo2-nJ1fF5sbw8-3h8tCwcL6UphFC6Jg604-CBsMp4qaQ3QGStTOk8pQqgZmWlnaqdMMSriunKqQquFQW-i95ve_vU_R59Huw6ZOfjfKtuzJaKkmgppDET-u4f9KYb0_SymVKlIYIKPlH7W8qlLufka9unsJ5UW0rs7N3O3u299wnee6gcr9e-ekIfRU8A3QJ3IfrNf6rs8ujrz8fSYpuZ_-fPUwbSrVWaa2m_X5zZT0KcfinZuWX8L9a4nfs</recordid><startdate>201401</startdate><enddate>201401</enddate><creator>Kim, Chang-Hee</creator><creator>Kim, Min-Beom</creator><creator>Ban, Jae Ho</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>K9.</scope><scope>7X8</scope></search><sort><creationdate>201401</creationdate><title>Persistent geotropic direction-changing positional nystagmus with a null plane: The light cupula</title><author>Kim, Chang-Hee ; Kim, Min-Beom ; Ban, Jae Ho</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3958-4467f0ca7c3aea02d8e565e8a05f689ce116aaf29d7c6fc480e6d27dc6dab61a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Benign paroxysmal positional vertigo</topic><topic>direction-changing positional nystagmus</topic><topic>Eye Movement Measurements</topic><topic>Female</topic><topic>geotropic nystagmus</topic><topic>head roll test</topic><topic>Humans</topic><topic>Light</topic><topic>Male</topic><topic>Medical research</topic><topic>Middle Aged</topic><topic>null plane</topic><topic>Nystagmus, Pathologic - physiopathology</topic><topic>Prospective Studies</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Chang-Hee</creatorcontrib><creatorcontrib>Kim, Min-Beom</creatorcontrib><creatorcontrib>Ban, Jae Ho</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><jtitle>The Laryngoscope</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Chang-Hee</au><au>Kim, Min-Beom</au><au>Ban, Jae Ho</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Persistent geotropic direction-changing positional nystagmus with a null plane: The light cupula</atitle><jtitle>The Laryngoscope</jtitle><addtitle>The Laryngoscope</addtitle><date>2014-01</date><risdate>2014</risdate><volume>124</volume><issue>1</issue><spage>E15</spage><epage>E19</epage><pages>E15-E19</pages><issn>0023-852X</issn><eissn>1531-4995</eissn><abstract>Objectives/Hypothesis
The aim of this study was to characterize the clinical features and typical positional nystagmus in patients with persistent geotropic direction‐changing positional nystagmus (DCPN) and address the possible pathophysiology of the disease. Furthermore, the proportion of light cupula among the patients showing geotropic DCPN was investigated to assume the incidence of light cupula in those patients.
Study Design
Prospective case series.
Methods
We conducted a prospective case series study in 19 patients with persistent geotropic DCPN. Positional nystagmus during the bow and lean test and the supine head roll test was analyzed using videonystagmography.
Results
All of the 19 patients showed persistent geotropic DCPN without latency. A null plane in which the nystagmus ceases was identified in all of 19 patients, and the intensity of nystagmus was stronger on one side in13 patients (68%) on supine head roll test. Overall, the affected side could be identified in 18 patients (95%). About 14.2% (19 of 134) of patients with geotropic DCPN could be diagnosed as having light cupula in the horizontal semicircular canal.
Conclusions
The patients with light cupula show persistent geotropic DCPN without latency. Affected side(s) can be determined by the direction and intensity of the characteristic positional nystagmus and the side of the null plane. The pathophysiology and treatment of light cupula still remain to be elucidated.
Level of Evidence
4. Laryngoscope, 124:E15–E19, 2014</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>24166487</pmid><doi>10.1002/lary.24048</doi><tpages>5</tpages></addata></record> |
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| ispartof | The Laryngoscope, 2014-01, Vol.124 (1), p.E15-E19 |
| issn | 0023-852X 1531-4995 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1490754588 |
| source | Wiley-Blackwell Read & Publish Collection |
| subjects | Adult Aged Benign paroxysmal positional vertigo direction-changing positional nystagmus Eye Movement Measurements Female geotropic nystagmus head roll test Humans Light Male Medical research Middle Aged null plane Nystagmus, Pathologic - physiopathology Prospective Studies |
| title | Persistent geotropic direction-changing positional nystagmus with a null plane: The light cupula |
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