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Relationship between Neurocardiogenic Syncope and Ventricular Repolarization

Background We aimed to analyze ventricular repolarization in neurocardiogenic syncope (NCS) patients by using T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio and corrected QT interval (QTc), QT dispersion (QTd), QT index (QTI) and corrected QT interval index (QTcI) comparing wit...

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Published in:Pacing and clinical electrophysiology 2015-05, Vol.38 (5), p.625-629
Main Authors: SUCU, MURAT, OZER, ORHAN, DAVUTOGLU, VEDAT, ERCAN, SULEYMAN, YUCE, MURAT, COSKUN, FATMA YILMAZ
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COSKUN, FATMA YILMAZ
description Background We aimed to analyze ventricular repolarization in neurocardiogenic syncope (NCS) patients by using T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio and corrected QT interval (QTc), QT dispersion (QTd), QT index (QTI) and corrected QT interval index (QTcI) comparing with the corrected JT dispersion (JTcd), and corrected JT (JTc) and the corrected JT interval index (JTcI), by inspecting ventricular activation until termination of repolarization. These parameters are used as an index of potential ventricular arrhythmogenesis. Methods We have studied patients with head‐up tilt table test (HUTT) (+) (33 patients; mean age: 28 ± 11 years) and HUTT (–) as control group (33 patients; mean age: 30 ± 11 years). In all patients, T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio, QT, QTd, QTI, QTc, QTcI, JTd, JTc, and JTcI were measured on electrocardiogram. Results The following parameters were statistically significant between groups: QTd (22.72 ± 17.54 msn; 11.21 ± 13.40 msn; P = 0.004), QTc (424.27 ± 33.75 msn; 403.66 ± 38.08 msn; P = 0.023), QTcI (114.09 ± 14, 29%; 106.71 ± 15.33%, P = 0.047), and QTI (100.72 ± 7.19%; 97.14 ± 7.13%, P = 0.046). Furthermore, T‐peak‐T‐end interval was significantly prolonged in the study group (93.78 ± 20.27 msn; 81.21 ± 11.66 msn; P = 0.003). T‐peak‐T‐end/QT ratio was significantly higher in the study group (0.24 ± 0.04 msn; 0.22 ± 0.04 msn; P = 0.030). T‐peak‐T‐end/QTc ratio was significantly higher in the study group (0.22 ± 0.04 msn; 0.20 ± 0.03 msn; P = 0.015). The JTc and JTd were also significantly higher in the study group ([103.00 ± 9, 72%; 95.44 ± 10.26%, P = 0.003], [27.57 ± 16.01 msn; 10.45 ± 16.08 msn; P < 0.001], respectively). Conclusions Electrocardiographic ventricular repolarization parameters including T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio, QTc, QTd, QTI, QTcI, JTc, JTd, and JTI are prolonged in NCS.
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These parameters are used as an index of potential ventricular arrhythmogenesis. Methods We have studied patients with head‐up tilt table test (HUTT) (+) (33 patients; mean age: 28 ± 11 years) and HUTT (–) as control group (33 patients; mean age: 30 ± 11 years). In all patients, T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio, QT, QTd, QTI, QTc, QTcI, JTd, JTc, and JTcI were measured on electrocardiogram. Results The following parameters were statistically significant between groups: QTd (22.72 ± 17.54 msn; 11.21 ± 13.40 msn; P = 0.004), QTc (424.27 ± 33.75 msn; 403.66 ± 38.08 msn; P = 0.023), QTcI (114.09 ± 14, 29%; 106.71 ± 15.33%, P = 0.047), and QTI (100.72 ± 7.19%; 97.14 ± 7.13%, P = 0.046). Furthermore, T‐peak‐T‐end interval was significantly prolonged in the study group (93.78 ± 20.27 msn; 81.21 ± 11.66 msn; P = 0.003). T‐peak‐T‐end/QT ratio was significantly higher in the study group (0.24 ± 0.04 msn; 0.22 ± 0.04 msn; P = 0.030). T‐peak‐T‐end/QTc ratio was significantly higher in the study group (0.22 ± 0.04 msn; 0.20 ± 0.03 msn; P = 0.015). The JTc and JTd were also significantly higher in the study group ([103.00 ± 9, 72%; 95.44 ± 10.26%, P = 0.003], [27.57 ± 16.01 msn; 10.45 ± 16.08 msn; P &lt; 0.001], respectively). Conclusions Electrocardiographic ventricular repolarization parameters including T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio, QTc, QTd, QTI, QTcI, JTc, JTd, and JTI are prolonged in NCS.</description><identifier>ISSN: 0147-8389</identifier><identifier>EISSN: 1540-8159</identifier><identifier>DOI: 10.1111/pace.12599</identifier><identifier>PMID: 25645192</identifier><language>eng</language><publisher>United States: Blackwell Publishing Ltd</publisher><subject>Adult ; electrocardiogram ; Electrocardiography ; Female ; Heart Ventricles - physiopathology ; Humans ; Male ; neurocardiogenic syncope ; repolarization ; Syncope, Vasovagal - physiopathology ; Tilt-Table Test</subject><ispartof>Pacing and clinical electrophysiology, 2015-05, Vol.38 (5), p.625-629</ispartof><rights>2015 Wiley Periodicals, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3679-696fccd878bf91c50773d7ed76fcb894cde3a37ab785abe5404a7f0f148440b93</citedby><cites>FETCH-LOGICAL-c3679-696fccd878bf91c50773d7ed76fcb894cde3a37ab785abe5404a7f0f148440b93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25645192$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>SUCU, MURAT</creatorcontrib><creatorcontrib>OZER, ORHAN</creatorcontrib><creatorcontrib>DAVUTOGLU, VEDAT</creatorcontrib><creatorcontrib>ERCAN, SULEYMAN</creatorcontrib><creatorcontrib>YUCE, MURAT</creatorcontrib><creatorcontrib>COSKUN, FATMA YILMAZ</creatorcontrib><title>Relationship between Neurocardiogenic Syncope and Ventricular Repolarization</title><title>Pacing and clinical electrophysiology</title><addtitle>Pacing and Clinical Electrophysiology</addtitle><description>Background We aimed to analyze ventricular repolarization in neurocardiogenic syncope (NCS) patients by using T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio and corrected QT interval (QTc), QT dispersion (QTd), QT index (QTI) and corrected QT interval index (QTcI) comparing with the corrected JT dispersion (JTcd), and corrected JT (JTc) and the corrected JT interval index (JTcI), by inspecting ventricular activation until termination of repolarization. These parameters are used as an index of potential ventricular arrhythmogenesis. Methods We have studied patients with head‐up tilt table test (HUTT) (+) (33 patients; mean age: 28 ± 11 years) and HUTT (–) as control group (33 patients; mean age: 30 ± 11 years). In all patients, T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio, QT, QTd, QTI, QTc, QTcI, JTd, JTc, and JTcI were measured on electrocardiogram. Results The following parameters were statistically significant between groups: QTd (22.72 ± 17.54 msn; 11.21 ± 13.40 msn; P = 0.004), QTc (424.27 ± 33.75 msn; 403.66 ± 38.08 msn; P = 0.023), QTcI (114.09 ± 14, 29%; 106.71 ± 15.33%, P = 0.047), and QTI (100.72 ± 7.19%; 97.14 ± 7.13%, P = 0.046). Furthermore, T‐peak‐T‐end interval was significantly prolonged in the study group (93.78 ± 20.27 msn; 81.21 ± 11.66 msn; P = 0.003). T‐peak‐T‐end/QT ratio was significantly higher in the study group (0.24 ± 0.04 msn; 0.22 ± 0.04 msn; P = 0.030). T‐peak‐T‐end/QTc ratio was significantly higher in the study group (0.22 ± 0.04 msn; 0.20 ± 0.03 msn; P = 0.015). The JTc and JTd were also significantly higher in the study group ([103.00 ± 9, 72%; 95.44 ± 10.26%, P = 0.003], [27.57 ± 16.01 msn; 10.45 ± 16.08 msn; P &lt; 0.001], respectively). Conclusions Electrocardiographic ventricular repolarization parameters including T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio, QTc, QTd, QTI, QTcI, JTc, JTd, and JTI are prolonged in NCS.</description><subject>Adult</subject><subject>electrocardiogram</subject><subject>Electrocardiography</subject><subject>Female</subject><subject>Heart Ventricles - physiopathology</subject><subject>Humans</subject><subject>Male</subject><subject>neurocardiogenic syncope</subject><subject>repolarization</subject><subject>Syncope, Vasovagal - physiopathology</subject><subject>Tilt-Table Test</subject><issn>0147-8389</issn><issn>1540-8159</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kMtOwzAQRS0EgvLY8AEoS4SUYjd2bC-rqrSIUlB5dGk5zgQMaRLsRKV8PaEtLJnNSKNzjzQXoVOCu6Sdy0ob6JIek3IHdQijOBSEyV3UwYTyUERCHqBD798wxjGmbB8d9FhMGZG9DprMINe1LQv_aqsggXoJUARTaFxptEtt-QKFNcHDqjBlBYEu0uAZitpZ0-TaBTOoynbbr7XjGO1lOvdwst1H6Olq-DgYh5O70fWgPwlNFHMZxjLOjEkFF0kmiWGY8yjlkPL2nAhJTQqRjrhOuGA6gfYhqnmGM0IFpTiR0RE633grV3404Gu1sN5AnusCysYrEvOYyfY_0aIXG9S40nsHmaqcXWi3UgSrn_bUT3tq3V4Ln229TbKA9A_9rasFyAZY2hxW_6jUfX8w_JWGm4z1NXz-ZbR7VzGPOFPz6UiNxze38_G0p26jb6Txiqo</recordid><startdate>201505</startdate><enddate>201505</enddate><creator>SUCU, MURAT</creator><creator>OZER, ORHAN</creator><creator>DAVUTOGLU, VEDAT</creator><creator>ERCAN, SULEYMAN</creator><creator>YUCE, MURAT</creator><creator>COSKUN, FATMA YILMAZ</creator><general>Blackwell Publishing Ltd</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>7X8</scope></search><sort><creationdate>201505</creationdate><title>Relationship between Neurocardiogenic Syncope and Ventricular Repolarization</title><author>SUCU, MURAT ; OZER, ORHAN ; DAVUTOGLU, VEDAT ; ERCAN, SULEYMAN ; YUCE, MURAT ; COSKUN, FATMA YILMAZ</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3679-696fccd878bf91c50773d7ed76fcb894cde3a37ab785abe5404a7f0f148440b93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Adult</topic><topic>electrocardiogram</topic><topic>Electrocardiography</topic><topic>Female</topic><topic>Heart Ventricles - physiopathology</topic><topic>Humans</topic><topic>Male</topic><topic>neurocardiogenic syncope</topic><topic>repolarization</topic><topic>Syncope, Vasovagal - physiopathology</topic><topic>Tilt-Table Test</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>SUCU, MURAT</creatorcontrib><creatorcontrib>OZER, ORHAN</creatorcontrib><creatorcontrib>DAVUTOGLU, VEDAT</creatorcontrib><creatorcontrib>ERCAN, SULEYMAN</creatorcontrib><creatorcontrib>YUCE, MURAT</creatorcontrib><creatorcontrib>COSKUN, FATMA YILMAZ</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>MEDLINE - Academic</collection><jtitle>Pacing and clinical electrophysiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SUCU, MURAT</au><au>OZER, ORHAN</au><au>DAVUTOGLU, VEDAT</au><au>ERCAN, SULEYMAN</au><au>YUCE, MURAT</au><au>COSKUN, FATMA YILMAZ</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Relationship between Neurocardiogenic Syncope and Ventricular Repolarization</atitle><jtitle>Pacing and clinical electrophysiology</jtitle><addtitle>Pacing and Clinical Electrophysiology</addtitle><date>2015-05</date><risdate>2015</risdate><volume>38</volume><issue>5</issue><spage>625</spage><epage>629</epage><pages>625-629</pages><issn>0147-8389</issn><eissn>1540-8159</eissn><abstract>Background We aimed to analyze ventricular repolarization in neurocardiogenic syncope (NCS) patients by using T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio and corrected QT interval (QTc), QT dispersion (QTd), QT index (QTI) and corrected QT interval index (QTcI) comparing with the corrected JT dispersion (JTcd), and corrected JT (JTc) and the corrected JT interval index (JTcI), by inspecting ventricular activation until termination of repolarization. These parameters are used as an index of potential ventricular arrhythmogenesis. Methods We have studied patients with head‐up tilt table test (HUTT) (+) (33 patients; mean age: 28 ± 11 years) and HUTT (–) as control group (33 patients; mean age: 30 ± 11 years). In all patients, T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio, QT, QTd, QTI, QTc, QTcI, JTd, JTc, and JTcI were measured on electrocardiogram. Results The following parameters were statistically significant between groups: QTd (22.72 ± 17.54 msn; 11.21 ± 13.40 msn; P = 0.004), QTc (424.27 ± 33.75 msn; 403.66 ± 38.08 msn; P = 0.023), QTcI (114.09 ± 14, 29%; 106.71 ± 15.33%, P = 0.047), and QTI (100.72 ± 7.19%; 97.14 ± 7.13%, P = 0.046). Furthermore, T‐peak‐T‐end interval was significantly prolonged in the study group (93.78 ± 20.27 msn; 81.21 ± 11.66 msn; P = 0.003). T‐peak‐T‐end/QT ratio was significantly higher in the study group (0.24 ± 0.04 msn; 0.22 ± 0.04 msn; P = 0.030). T‐peak‐T‐end/QTc ratio was significantly higher in the study group (0.22 ± 0.04 msn; 0.20 ± 0.03 msn; P = 0.015). The JTc and JTd were also significantly higher in the study group ([103.00 ± 9, 72%; 95.44 ± 10.26%, P = 0.003], [27.57 ± 16.01 msn; 10.45 ± 16.08 msn; P &lt; 0.001], respectively). Conclusions Electrocardiographic ventricular repolarization parameters including T‐peak‐T‐end interval, T‐peak‐T‐end/QT ratio, T‐peak‐T‐end/QTc ratio, QTc, QTd, QTI, QTcI, JTc, JTd, and JTI are prolonged in NCS.</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>25645192</pmid><doi>10.1111/pace.12599</doi><tpages>5</tpages></addata></record>
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source SPORTDiscus database; Wiley-Blackwell Read & Publish Collection
subjects Adult
electrocardiogram
Electrocardiography
Female
Heart Ventricles - physiopathology
Humans
Male
neurocardiogenic syncope
repolarization
Syncope, Vasovagal - physiopathology
Tilt-Table Test
title Relationship between Neurocardiogenic Syncope and Ventricular Repolarization
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