Sodium channel blocker tests allow a clear distinction of electrophysiological characteristics and prognosis in patients with a type 2 or 3 Brugada electrocardiogram pattern
Background Patients with a type 2 or 3 Brugada syndrome (BS) pattern and a negative sodium channel blocker challenge (SCBC) are not considered as affected. Their arrhythmic prognosis is generally considered good, but it has never been specifically evaluated. Objective The purpose of this study was t...
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| Veröffentlicht in: | Heart rhythm 2008-11, Vol.5 (11), p.1561-1564 |
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| creator | Evain, S., MD Briec, F., MD Kyndt, F., PharmD, PhD Schott, J.J., PhD Lande, G., MD, PhD Albuisson, J., MD Abbey, S., MD Le Marec, H., MD, PhD Probst, V., MD |
| description | Background Patients with a type 2 or 3 Brugada syndrome (BS) pattern and a negative sodium channel blocker challenge (SCBC) are not considered as affected. Their arrhythmic prognosis is generally considered good, but it has never been specifically evaluated. Objective The purpose of this study was to evaluate the arrhythmic prognosis in patients with a type 2 or 3 electrocardiogram (ECG) not converted to type 1 ECG during an SCBC. Methods Clinical data, 12-lead ECG, results of the SCBC and electrophysiological study (EPS), and follow-up were collected. Results Among the 500 patients who underwent an SCBC in our institution, 158 displayed a type 2 or 3 ECG. After the SCBC, 93 (59%) had a type 1 ECG (positive group [PG]), whereas 65 (41%) remained negative (negative group [NG]). An EPS was performed in 31 (33%) PG patients and 15 (23%) NG patients. Ventricular fibrillation was induced in 21 PG patients (67%), whereas no patient in the NG was inducible ( P |
| doi_str_mv | 10.1016/j.hrthm.2008.08.029 |
| format | Article |
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Their arrhythmic prognosis is generally considered good, but it has never been specifically evaluated. Objective The purpose of this study was to evaluate the arrhythmic prognosis in patients with a type 2 or 3 electrocardiogram (ECG) not converted to type 1 ECG during an SCBC. Methods Clinical data, 12-lead ECG, results of the SCBC and electrophysiological study (EPS), and follow-up were collected. Results Among the 500 patients who underwent an SCBC in our institution, 158 displayed a type 2 or 3 ECG. After the SCBC, 93 (59%) had a type 1 ECG (positive group [PG]), whereas 65 (41%) remained negative (negative group [NG]). An EPS was performed in 31 (33%) PG patients and 15 (23%) NG patients. Ventricular fibrillation was induced in 21 PG patients (67%), whereas no patient in the NG was inducible ( P <.001). During a follow-up of 37 ± 17 months, no sudden death occurred. Three syncopes were observed in the NG versus one syncope, two ventricular tachycardias, and one appropriate shock in the PG. Conclusion This study demonstrates that the presence or absence of coved type ST-segment elevation during the SCBC denotes a profound electrophysiological difference as demonstrated by the absence of inducibility during EPS in the NG that may be responsible for the good prognosis of patients with a type 2 or 3 ECG pattern not converted to type 1.</description><identifier>ISSN: 1547-5271</identifier><identifier>EISSN: 1556-3871</identifier><identifier>DOI: 10.1016/j.hrthm.2008.08.029</identifier><identifier>PMID: 18984533</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Adult ; Arrhythmia ; Brugada syndrome ; Brugada Syndrome - complications ; Brugada Syndrome - physiopathology ; Cardiac Electrophysiology ; Cardiovascular ; ECG ; Electrocardiography ; Female ; Heart Conduction System - drug effects ; Heart rhythm prognosis ; Humans ; Male ; Middle Aged ; Prognosis ; Sodium Channel Blockers - pharmacology ; Sudden death ; Syncope ; Tachycardia, Ventricular - etiology ; Ventricular rhythm disturbances</subject><ispartof>Heart rhythm, 2008-11, Vol.5 (11), p.1561-1564</ispartof><rights>Heart Rhythm Society</rights><rights>2008 Heart Rhythm Society</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c412t-40edc61c22bd2514cba1b5e047c42f17e406c425b0484ba362ca61608b0d77103</citedby><cites>FETCH-LOGICAL-c412t-40edc61c22bd2514cba1b5e047c42f17e406c425b0484ba362ca61608b0d77103</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.hrthm.2008.08.029$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18984533$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Evain, S., MD</creatorcontrib><creatorcontrib>Briec, F., MD</creatorcontrib><creatorcontrib>Kyndt, F., PharmD, PhD</creatorcontrib><creatorcontrib>Schott, J.J., PhD</creatorcontrib><creatorcontrib>Lande, G., MD, PhD</creatorcontrib><creatorcontrib>Albuisson, J., MD</creatorcontrib><creatorcontrib>Abbey, S., MD</creatorcontrib><creatorcontrib>Le Marec, H., MD, PhD</creatorcontrib><creatorcontrib>Probst, V., MD</creatorcontrib><title>Sodium channel blocker tests allow a clear distinction of electrophysiological characteristics and prognosis in patients with a type 2 or 3 Brugada electrocardiogram pattern</title><title>Heart rhythm</title><addtitle>Heart Rhythm</addtitle><description>Background Patients with a type 2 or 3 Brugada syndrome (BS) pattern and a negative sodium channel blocker challenge (SCBC) are not considered as affected. Their arrhythmic prognosis is generally considered good, but it has never been specifically evaluated. Objective The purpose of this study was to evaluate the arrhythmic prognosis in patients with a type 2 or 3 electrocardiogram (ECG) not converted to type 1 ECG during an SCBC. Methods Clinical data, 12-lead ECG, results of the SCBC and electrophysiological study (EPS), and follow-up were collected. Results Among the 500 patients who underwent an SCBC in our institution, 158 displayed a type 2 or 3 ECG. After the SCBC, 93 (59%) had a type 1 ECG (positive group [PG]), whereas 65 (41%) remained negative (negative group [NG]). An EPS was performed in 31 (33%) PG patients and 15 (23%) NG patients. Ventricular fibrillation was induced in 21 PG patients (67%), whereas no patient in the NG was inducible ( P <.001). During a follow-up of 37 ± 17 months, no sudden death occurred. Three syncopes were observed in the NG versus one syncope, two ventricular tachycardias, and one appropriate shock in the PG. Conclusion This study demonstrates that the presence or absence of coved type ST-segment elevation during the SCBC denotes a profound electrophysiological difference as demonstrated by the absence of inducibility during EPS in the NG that may be responsible for the good prognosis of patients with a type 2 or 3 ECG pattern not converted to type 1.</description><subject>Adult</subject><subject>Arrhythmia</subject><subject>Brugada syndrome</subject><subject>Brugada Syndrome - complications</subject><subject>Brugada Syndrome - physiopathology</subject><subject>Cardiac Electrophysiology</subject><subject>Cardiovascular</subject><subject>ECG</subject><subject>Electrocardiography</subject><subject>Female</subject><subject>Heart Conduction System - drug effects</subject><subject>Heart rhythm prognosis</subject><subject>Humans</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Prognosis</subject><subject>Sodium Channel Blockers - pharmacology</subject><subject>Sudden death</subject><subject>Syncope</subject><subject>Tachycardia, Ventricular - etiology</subject><subject>Ventricular rhythm disturbances</subject><issn>1547-5271</issn><issn>1556-3871</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFksuKFDEUhgtRnIs-gSBZuas2t7otFJxBR2HAxSi4C6nkdFd6UkmZpBz6oXxHE7tFcCMcyFn8_5fk_KeqXhC8IZi0r_ebKaRp3lCM-00pOjyqzknTtDXrO_K49LyrG9qRs-oixj3Oihazp9UZ6YeeN4ydVz_vvDbrjNQknQOLRuvVPQSUIKaIpLX-AUmkLMiAtInJOJWMd8hvEVhQKfhlOkTjrd8ZJW3hBKkShKJVmeA0WoLfOR9NRMahRSYDLrMfTJoyOh0WQBT5gBi6CutOavmHrGTQxu-CnIsrM92z6slW2gjPT-dl9fXD-y_XH-vbzzefrt_d1ooTmmqOQauWKEpHTRvC1SjJ2ADmneJ0SzrguM1dM2Le81GylirZkhb3I9ZdRzC7rF4dufnp39c8CjGbqMBa6cCvUbRD17Cmb7OQHYUq-BgDbMUSzCzDQRAsSkpiL36nJEpKohQdsuvlCb-OM-i_nlMsWfDmKID8yR8GgogqT02BNiGPRmhv_nPB23_8yhpXArqHA8S9X4PL8xNERCqwuCuLUvYE9xnSDN_YL1VMva4</recordid><startdate>20081101</startdate><enddate>20081101</enddate><creator>Evain, S., MD</creator><creator>Briec, F., MD</creator><creator>Kyndt, F., PharmD, PhD</creator><creator>Schott, J.J., PhD</creator><creator>Lande, G., MD, PhD</creator><creator>Albuisson, J., MD</creator><creator>Abbey, S., MD</creator><creator>Le Marec, H., MD, PhD</creator><creator>Probst, V., MD</creator><general>Elsevier Inc</general><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>20081101</creationdate><title>Sodium channel blocker tests allow a clear distinction of electrophysiological characteristics and prognosis in patients with a type 2 or 3 Brugada electrocardiogram pattern</title><author>Evain, S., MD ; Briec, F., MD ; Kyndt, F., PharmD, PhD ; Schott, J.J., PhD ; Lande, G., MD, PhD ; Albuisson, J., MD ; Abbey, S., MD ; Le Marec, H., MD, PhD ; Probst, V., MD</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c412t-40edc61c22bd2514cba1b5e047c42f17e406c425b0484ba362ca61608b0d77103</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Adult</topic><topic>Arrhythmia</topic><topic>Brugada syndrome</topic><topic>Brugada Syndrome - complications</topic><topic>Brugada Syndrome - physiopathology</topic><topic>Cardiac Electrophysiology</topic><topic>Cardiovascular</topic><topic>ECG</topic><topic>Electrocardiography</topic><topic>Female</topic><topic>Heart Conduction System - drug effects</topic><topic>Heart rhythm prognosis</topic><topic>Humans</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Prognosis</topic><topic>Sodium Channel Blockers - pharmacology</topic><topic>Sudden death</topic><topic>Syncope</topic><topic>Tachycardia, Ventricular - etiology</topic><topic>Ventricular rhythm disturbances</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Evain, S., MD</creatorcontrib><creatorcontrib>Briec, F., MD</creatorcontrib><creatorcontrib>Kyndt, F., PharmD, PhD</creatorcontrib><creatorcontrib>Schott, J.J., PhD</creatorcontrib><creatorcontrib>Lande, G., MD, PhD</creatorcontrib><creatorcontrib>Albuisson, J., MD</creatorcontrib><creatorcontrib>Abbey, S., MD</creatorcontrib><creatorcontrib>Le Marec, H., MD, PhD</creatorcontrib><creatorcontrib>Probst, V., MD</creatorcontrib><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>Heart rhythm</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Evain, S., MD</au><au>Briec, F., MD</au><au>Kyndt, F., PharmD, PhD</au><au>Schott, J.J., PhD</au><au>Lande, G., MD, PhD</au><au>Albuisson, J., MD</au><au>Abbey, S., MD</au><au>Le Marec, H., MD, PhD</au><au>Probst, V., MD</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sodium channel blocker tests allow a clear distinction of electrophysiological characteristics and prognosis in patients with a type 2 or 3 Brugada electrocardiogram pattern</atitle><jtitle>Heart rhythm</jtitle><addtitle>Heart Rhythm</addtitle><date>2008-11-01</date><risdate>2008</risdate><volume>5</volume><issue>11</issue><spage>1561</spage><epage>1564</epage><pages>1561-1564</pages><issn>1547-5271</issn><eissn>1556-3871</eissn><abstract>Background Patients with a type 2 or 3 Brugada syndrome (BS) pattern and a negative sodium channel blocker challenge (SCBC) are not considered as affected. Their arrhythmic prognosis is generally considered good, but it has never been specifically evaluated. Objective The purpose of this study was to evaluate the arrhythmic prognosis in patients with a type 2 or 3 electrocardiogram (ECG) not converted to type 1 ECG during an SCBC. Methods Clinical data, 12-lead ECG, results of the SCBC and electrophysiological study (EPS), and follow-up were collected. Results Among the 500 patients who underwent an SCBC in our institution, 158 displayed a type 2 or 3 ECG. After the SCBC, 93 (59%) had a type 1 ECG (positive group [PG]), whereas 65 (41%) remained negative (negative group [NG]). An EPS was performed in 31 (33%) PG patients and 15 (23%) NG patients. Ventricular fibrillation was induced in 21 PG patients (67%), whereas no patient in the NG was inducible ( P <.001). During a follow-up of 37 ± 17 months, no sudden death occurred. Three syncopes were observed in the NG versus one syncope, two ventricular tachycardias, and one appropriate shock in the PG. Conclusion This study demonstrates that the presence or absence of coved type ST-segment elevation during the SCBC denotes a profound electrophysiological difference as demonstrated by the absence of inducibility during EPS in the NG that may be responsible for the good prognosis of patients with a type 2 or 3 ECG pattern not converted to type 1.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>18984533</pmid><doi>10.1016/j.hrthm.2008.08.029</doi><tpages>4</tpages></addata></record> |
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| subjects | Adult Arrhythmia Brugada syndrome Brugada Syndrome - complications Brugada Syndrome - physiopathology Cardiac Electrophysiology Cardiovascular ECG Electrocardiography Female Heart Conduction System - drug effects Heart rhythm prognosis Humans Male Middle Aged Prognosis Sodium Channel Blockers - pharmacology Sudden death Syncope Tachycardia, Ventricular - etiology Ventricular rhythm disturbances |
| title | Sodium channel blocker tests allow a clear distinction of electrophysiological characteristics and prognosis in patients with a type 2 or 3 Brugada electrocardiogram pattern |
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