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Abrupt changes in fibrillatory wave characteristics at the termination of paroxysmal atrial fibrillation in humans
Aims We investigated the process of spontaneous termination of atrial fibrillation (AF) to determine its time course from the surface ECG. Methods and results We studied fibrillatory waves in Holter recordings of paroxysmal and sustained AF. Following QRS-T cancellation dominant frequencies (DFs) we...
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Published in: | Europace (London, England) England), 2007-07, Vol.9 (7), p.466-470 |
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creator | Petrutiu, Simona Sahakian, Alan V. Swiryn, Steven |
description | Aims We investigated the process of spontaneous termination of atrial fibrillation (AF) to determine its time course from the surface ECG.
Methods and results We studied fibrillatory waves in Holter recordings of paroxysmal and sustained AF. Following QRS-T cancellation dominant frequencies (DFs) were computed and the relationship of DF to termination was scrutinized. For 57 episodes of paroxysmal AF (PAF) in 24 patients, DF ranged from 4.4 to 6.5 Hz (5.2 ± 0.4 Hz) compared to 5.8 to 7.4 Hz (6.6 ± 0.6 Hz) for sustained AF recordings. Comparison of the atrial frequency of the ultimate to the penultimate second demonstrated a drop in frequency in 51 of 57 episodes, P < 0.00001. No comparable change was seen at longer time periods. Moments of comparably low frequency without termination were only occasionally seen in patients with PAF but not in patients with sustained AF.
Conclusion Low frequency fibrillation was found to be much more likely to terminate. Frequency changes preceding spontaneous termination were abrupt, in contrast to the gradual frequency drop reported with drug-induced termination. The analysis of fibrillatory wave characteristics and their change over time might be used to target specific moments for pacing therapy in patients with AF. |
doi_str_mv | 10.1093/europace/eum096 |
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Methods and results We studied fibrillatory waves in Holter recordings of paroxysmal and sustained AF. Following QRS-T cancellation dominant frequencies (DFs) were computed and the relationship of DF to termination was scrutinized. For 57 episodes of paroxysmal AF (PAF) in 24 patients, DF ranged from 4.4 to 6.5 Hz (5.2 ± 0.4 Hz) compared to 5.8 to 7.4 Hz (6.6 ± 0.6 Hz) for sustained AF recordings. Comparison of the atrial frequency of the ultimate to the penultimate second demonstrated a drop in frequency in 51 of 57 episodes, P < 0.00001. No comparable change was seen at longer time periods. Moments of comparably low frequency without termination were only occasionally seen in patients with PAF but not in patients with sustained AF.
Conclusion Low frequency fibrillation was found to be much more likely to terminate. Frequency changes preceding spontaneous termination were abrupt, in contrast to the gradual frequency drop reported with drug-induced termination. The analysis of fibrillatory wave characteristics and their change over time might be used to target specific moments for pacing therapy in patients with AF.</description><identifier>ISSN: 1099-5129</identifier><identifier>EISSN: 1532-2092</identifier><identifier>DOI: 10.1093/europace/eum096</identifier><identifier>PMID: 17540663</identifier><language>eng</language><publisher>England: Oxford University Press</publisher><subject>Adult ; Aged ; Aged, 80 and over ; Atrial Fibrillation - physiopathology ; Electrocardiography, Ambulatory ; Female ; Fourier Analysis ; Humans ; Male ; Middle Aged ; Predictive Value of Tests ; Signal Processing, Computer-Assisted</subject><ispartof>Europace (London, England), 2007-07, Vol.9 (7), p.466-470</ispartof><rights>The European Society of Cardiology 2007. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org 2007</rights><rights>Copyright Oxford Publishing Limited(England) Jul 2007</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3796-2ae81da7eacb7fcbd90fa5f4b05220543b6a32d80dc619c807116279441a61aa3</citedby><cites>FETCH-LOGICAL-c3796-2ae81da7eacb7fcbd90fa5f4b05220543b6a32d80dc619c807116279441a61aa3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1598,27903,27904</link.rule.ids><linktorsrc>$$Uhttps://dx.doi.org/10.1093/europace/eum096$$EView_record_in_Oxford_University_Press$$FView_record_in_$$GOxford_University_Press</linktorsrc><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17540663$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Petrutiu, Simona</creatorcontrib><creatorcontrib>Sahakian, Alan V.</creatorcontrib><creatorcontrib>Swiryn, Steven</creatorcontrib><title>Abrupt changes in fibrillatory wave characteristics at the termination of paroxysmal atrial fibrillation in humans</title><title>Europace (London, England)</title><addtitle>Europace</addtitle><description>Aims We investigated the process of spontaneous termination of atrial fibrillation (AF) to determine its time course from the surface ECG.
Methods and results We studied fibrillatory waves in Holter recordings of paroxysmal and sustained AF. Following QRS-T cancellation dominant frequencies (DFs) were computed and the relationship of DF to termination was scrutinized. For 57 episodes of paroxysmal AF (PAF) in 24 patients, DF ranged from 4.4 to 6.5 Hz (5.2 ± 0.4 Hz) compared to 5.8 to 7.4 Hz (6.6 ± 0.6 Hz) for sustained AF recordings. Comparison of the atrial frequency of the ultimate to the penultimate second demonstrated a drop in frequency in 51 of 57 episodes, P < 0.00001. No comparable change was seen at longer time periods. Moments of comparably low frequency without termination were only occasionally seen in patients with PAF but not in patients with sustained AF.
Conclusion Low frequency fibrillation was found to be much more likely to terminate. Frequency changes preceding spontaneous termination were abrupt, in contrast to the gradual frequency drop reported with drug-induced termination. The analysis of fibrillatory wave characteristics and their change over time might be used to target specific moments for pacing therapy in patients with AF.</description><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Atrial Fibrillation - physiopathology</subject><subject>Electrocardiography, Ambulatory</subject><subject>Female</subject><subject>Fourier Analysis</subject><subject>Humans</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Predictive Value of Tests</subject><subject>Signal Processing, Computer-Assisted</subject><issn>1099-5129</issn><issn>1532-2092</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkU1LxDAQhoMoun6cvUnw4EGoO0napjku4hcIXvRcpmnqZtk2NWnV_fdm2VXBi6cZJs88DHkJOWVwxUCJqRm961Gb2LSg8h0yYZngCQfFd2MPSiUZ4-qAHIawAADJVbZPDpjMUshzMSF-VvmxH6ieY_dqArUdbWzl7XKJg_Mr-oHvZv3oUQ_G2zBYHSgOdJgbGget7XCwrqOuoT1697kKLS4j4G0sP6Y1Ec3zscUuHJO9BpfBnGzrEXm5vXm-vk8en-4ermePiRZS5QlHU7AapUFdyUZXtYIGsyatIOMcslRUOQpeF1DrnCldgGQs51KlKcOcIYojcrHx9t69jSYMZWuDNvGezrgxlBKkKCCTETz_Ay7c6Lt4W8lUIYDJYg1NN5D2LgRvmrL3tkW_KhmU6yzK7yzKTRZx42yrHavW1L_89vMjcLkB3Nj_a_sCjaiYzg</recordid><startdate>200707</startdate><enddate>200707</enddate><creator>Petrutiu, Simona</creator><creator>Sahakian, Alan V.</creator><creator>Swiryn, Steven</creator><general>Oxford University Press</general><general>Oxford Publishing Limited (England)</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>7T5</scope><scope>H94</scope><scope>K9.</scope><scope>7X8</scope></search><sort><creationdate>200707</creationdate><title>Abrupt changes in fibrillatory wave characteristics at the termination of paroxysmal atrial fibrillation in humans</title><author>Petrutiu, Simona ; Sahakian, Alan V. ; Swiryn, Steven</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3796-2ae81da7eacb7fcbd90fa5f4b05220543b6a32d80dc619c807116279441a61aa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Atrial Fibrillation - physiopathology</topic><topic>Electrocardiography, Ambulatory</topic><topic>Female</topic><topic>Fourier Analysis</topic><topic>Humans</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Predictive Value of Tests</topic><topic>Signal Processing, Computer-Assisted</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Petrutiu, Simona</creatorcontrib><creatorcontrib>Sahakian, Alan V.</creatorcontrib><creatorcontrib>Swiryn, Steven</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Immunology Abstracts</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><jtitle>Europace (London, England)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Petrutiu, Simona</au><au>Sahakian, Alan V.</au><au>Swiryn, Steven</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Abrupt changes in fibrillatory wave characteristics at the termination of paroxysmal atrial fibrillation in humans</atitle><jtitle>Europace (London, England)</jtitle><addtitle>Europace</addtitle><date>2007-07</date><risdate>2007</risdate><volume>9</volume><issue>7</issue><spage>466</spage><epage>470</epage><pages>466-470</pages><issn>1099-5129</issn><eissn>1532-2092</eissn><abstract>Aims We investigated the process of spontaneous termination of atrial fibrillation (AF) to determine its time course from the surface ECG.
Methods and results We studied fibrillatory waves in Holter recordings of paroxysmal and sustained AF. Following QRS-T cancellation dominant frequencies (DFs) were computed and the relationship of DF to termination was scrutinized. For 57 episodes of paroxysmal AF (PAF) in 24 patients, DF ranged from 4.4 to 6.5 Hz (5.2 ± 0.4 Hz) compared to 5.8 to 7.4 Hz (6.6 ± 0.6 Hz) for sustained AF recordings. Comparison of the atrial frequency of the ultimate to the penultimate second demonstrated a drop in frequency in 51 of 57 episodes, P < 0.00001. No comparable change was seen at longer time periods. Moments of comparably low frequency without termination were only occasionally seen in patients with PAF but not in patients with sustained AF.
Conclusion Low frequency fibrillation was found to be much more likely to terminate. Frequency changes preceding spontaneous termination were abrupt, in contrast to the gradual frequency drop reported with drug-induced termination. The analysis of fibrillatory wave characteristics and their change over time might be used to target specific moments for pacing therapy in patients with AF.</abstract><cop>England</cop><pub>Oxford University Press</pub><pmid>17540663</pmid><doi>10.1093/europace/eum096</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Adult Aged Aged, 80 and over Atrial Fibrillation - physiopathology Electrocardiography, Ambulatory Female Fourier Analysis Humans Male Middle Aged Predictive Value of Tests Signal Processing, Computer-Assisted |
title | Abrupt changes in fibrillatory wave characteristics at the termination of paroxysmal atrial fibrillation in humans |
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