Quantitative Evaluation of a Directly Depolarized Area Induced by High-Output Pacing on the Cardiac Muscle
Quantitative information is needed on the directly depolarized area (DDA) induced by high-output energy during a precise mapping procedure to detect the origin of a tachycardia. In the present study, a DDA caused by high-output energy was quantitatively evaluated in the exposed canine heart. In 8 do...
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Veröffentlicht in: | JAPANESE CIRCULATION JOURNAL 2000, Vol.64(11), pp.876-882 |
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description | Quantitative information is needed on the directly depolarized area (DDA) induced by high-output energy during a precise mapping procedure to detect the origin of a tachycardia. In the present study, a DDA caused by high-output energy was quantitatively evaluated in the exposed canine heart. In 8 dogs, the right atrial and ventricular surfaces were exposed through a right thoracotomy and pacing with various outputs was delivered from the epicardial surface. A comb-shaped 16 polar electrode array and/or a 224 polar mat electrode array were used for recording the epicardial electrograms. The local activation time was measured at each electrode site, and the relationship of the distance between the electrode location from the pacing site and the local activation time was plotted and fitted to a primary regression line. The intercept of the regression line on the horizontal axis was defined as the radius of the ‘DDA’ and this was evaluated at each pacing output. The radius of the DDA was 0.6±0.1mm with a 2V and 3.8±0.2mm with a 10V output when it was evaluated in a direction perpendicular to the fiber orientation of the pectinate muscle, 0.8±0.1mm with a 2V and 4.1±0.3mm with a 10V output in a direction parallel to the pectinate muscle fiber orientation, and 0.9±0.3mm with a 2V and 3.6±0.5mm with a 10V output in the right ventricle. The DDA extended according to the increase in stimulation outputs at all sites, and there was no significant difference in the pacing site or the direction of the stimulation propagation. The DDA caused by high-output energy is a purely physical phenomenon that depends only on stimulation output and tissue resistance. The diameter of the DDA exceeded 4mm (ie, the size of a standard tip electrode for catheter ablation) when pacing was delivered with an output greater than 6V. |
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In the present study, a DDA caused by high-output energy was quantitatively evaluated in the exposed canine heart. In 8 dogs, the right atrial and ventricular surfaces were exposed through a right thoracotomy and pacing with various outputs was delivered from the epicardial surface. A comb-shaped 16 polar electrode array and/or a 224 polar mat electrode array were used for recording the epicardial electrograms. The local activation time was measured at each electrode site, and the relationship of the distance between the electrode location from the pacing site and the local activation time was plotted and fitted to a primary regression line. The intercept of the regression line on the horizontal axis was defined as the radius of the ‘DDA’ and this was evaluated at each pacing output. The radius of the DDA was 0.6±0.1mm with a 2V and 3.8±0.2mm with a 10V output when it was evaluated in a direction perpendicular to the fiber orientation of the pectinate muscle, 0.8±0.1mm with a 2V and 4.1±0.3mm with a 10V output in a direction parallel to the pectinate muscle fiber orientation, and 0.9±0.3mm with a 2V and 3.6±0.5mm with a 10V output in the right ventricle. The DDA extended according to the increase in stimulation outputs at all sites, and there was no significant difference in the pacing site or the direction of the stimulation propagation. The DDA caused by high-output energy is a purely physical phenomenon that depends only on stimulation output and tissue resistance. The diameter of the DDA exceeded 4mm (ie, the size of a standard tip electrode for catheter ablation) when pacing was delivered with an output greater than 6V.</description><identifier>ISSN: 0047-1828</identifier><identifier>EISSN: 1347-4839</identifier><identifier>DOI: 10.1253/jcj.64.876</identifier><identifier>PMID: 11110434</identifier><identifier>CODEN: JCIRA2</identifier><language>eng</language><publisher>Kyoto: The Japanese Circulation Society</publisher><subject>Animals ; Biological and medical sciences ; Cardiac Pacing, Artificial - methods ; Data Display ; Directly depolarized area ; Dogs ; Electric Stimulation ; Electrocardiography. Vectocardiography ; Electrodes ; Electrodiagnosis. Electric activity recording ; Electrophysiological study ; Equipment Design ; Heart - physiology ; High-output pacing ; Investigative techniques, diagnostic techniques (general aspects) ; Medical sciences ; Membrane Potentials ; Myocardium - ultrastructure ; Stimulation output</subject><ispartof>JAPANESE CIRCULATION JOURNAL, 2000, Vol.64(11), pp.876-882</ispartof><rights>2000 THE JAPANESE CIRCULATION SOCIETY</rights><rights>2001 INIST-CNRS</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c601t-fd075c07a31fa470298903404d6878c6b0e681762f31653186a3438c6870bd5a3</citedby><cites>FETCH-LOGICAL-c601t-fd075c07a31fa470298903404d6878c6b0e681762f31653186a3438c6870bd5a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,4024,27923,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=832498$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11110434$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Moriguchi, Masahiko</creatorcontrib><creatorcontrib>Niwano, Shinichi</creatorcontrib><creatorcontrib>Yoshizawa, Naoto</creatorcontrib><creatorcontrib>Kitano, Yoshikazu</creatorcontrib><creatorcontrib>Masaki, Yoshihiko</creatorcontrib><creatorcontrib>Maruyama, Shigeyoshi</creatorcontrib><creatorcontrib>Izumi, Tohru</creatorcontrib><title>Quantitative Evaluation of a Directly Depolarized Area Induced by High-Output Pacing on the Cardiac Muscle</title><title>JAPANESE CIRCULATION JOURNAL</title><addtitle>JAPANESE CIRCULATION JOURNAL</addtitle><description>Quantitative information is needed on the directly depolarized area (DDA) induced by high-output energy during a precise mapping procedure to detect the origin of a tachycardia. In the present study, a DDA caused by high-output energy was quantitatively evaluated in the exposed canine heart. In 8 dogs, the right atrial and ventricular surfaces were exposed through a right thoracotomy and pacing with various outputs was delivered from the epicardial surface. A comb-shaped 16 polar electrode array and/or a 224 polar mat electrode array were used for recording the epicardial electrograms. The local activation time was measured at each electrode site, and the relationship of the distance between the electrode location from the pacing site and the local activation time was plotted and fitted to a primary regression line. The intercept of the regression line on the horizontal axis was defined as the radius of the ‘DDA’ and this was evaluated at each pacing output. The radius of the DDA was 0.6±0.1mm with a 2V and 3.8±0.2mm with a 10V output when it was evaluated in a direction perpendicular to the fiber orientation of the pectinate muscle, 0.8±0.1mm with a 2V and 4.1±0.3mm with a 10V output in a direction parallel to the pectinate muscle fiber orientation, and 0.9±0.3mm with a 2V and 3.6±0.5mm with a 10V output in the right ventricle. The DDA extended according to the increase in stimulation outputs at all sites, and there was no significant difference in the pacing site or the direction of the stimulation propagation. The DDA caused by high-output energy is a purely physical phenomenon that depends only on stimulation output and tissue resistance. The diameter of the DDA exceeded 4mm (ie, the size of a standard tip electrode for catheter ablation) when pacing was delivered with an output greater than 6V.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Cardiac Pacing, Artificial - methods</subject><subject>Data Display</subject><subject>Directly depolarized area</subject><subject>Dogs</subject><subject>Electric Stimulation</subject><subject>Electrocardiography. Vectocardiography</subject><subject>Electrodes</subject><subject>Electrodiagnosis. Electric activity recording</subject><subject>Electrophysiological study</subject><subject>Equipment Design</subject><subject>Heart - physiology</subject><subject>High-output pacing</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Medical sciences</subject><subject>Membrane Potentials</subject><subject>Myocardium - ultrastructure</subject><subject>Stimulation output</subject><issn>0047-1828</issn><issn>1347-4839</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkF1r2zAUhkVpWbNuN_0BRVDYxcCZZMmSfBnSbi20tIX2WpzIciLj2Kk-Ctmvn0a8TBfSEe9zzoEHoUtK5rSs2I_OdHPB50qKEzSjjMuCK1afohkhuaaqVOfocwgdIaXkVfUJndN8CGd8hrqXBEN0EaL7sPj2A_qUy3HAY4sB3zhvTez3-Mbuxh68-20bvPAW8P3QJJM_qz2-c-tN8ZTiLkX8DMYNa5z748biJfjGgcGPKZjefkFnLfTBfp3eC_T28_Z1eVc8PP26Xy4eCiMIjUXbEFkZIoHRFrgkZa1qwjjhjVBSGbEiVigqRdkyKipGlQDGWQ6UJKumAnaBvh3m7vz4nmyIeuuCsX0Pgx1T0LLkoqwrnsHvB9D4MQRvW73zbgt-rynRf83qbFYLrrPZDF9NU9Nqa5v_6KQyA9cTAMFA33oYjAtHTrGS1ypTiwPVhQhre4zBR5cd_dtI6XTn1cfMbMBrO7A_SO-WbA</recordid><startdate>2000</startdate><enddate>2000</enddate><creator>Moriguchi, Masahiko</creator><creator>Niwano, Shinichi</creator><creator>Yoshizawa, Naoto</creator><creator>Kitano, Yoshikazu</creator><creator>Masaki, Yoshihiko</creator><creator>Maruyama, Shigeyoshi</creator><creator>Izumi, Tohru</creator><general>The Japanese Circulation Society</general><general>Japanese Circulation Society</general><scope>IQODW</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>2000</creationdate><title>Quantitative Evaluation of a Directly Depolarized Area Induced by High-Output Pacing on the Cardiac Muscle</title><author>Moriguchi, Masahiko ; Niwano, Shinichi ; Yoshizawa, Naoto ; Kitano, Yoshikazu ; Masaki, Yoshihiko ; Maruyama, Shigeyoshi ; Izumi, Tohru</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c601t-fd075c07a31fa470298903404d6878c6b0e681762f31653186a3438c6870bd5a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Cardiac Pacing, Artificial - methods</topic><topic>Data Display</topic><topic>Directly depolarized area</topic><topic>Dogs</topic><topic>Electric Stimulation</topic><topic>Electrocardiography. Vectocardiography</topic><topic>Electrodes</topic><topic>Electrodiagnosis. Electric activity recording</topic><topic>Electrophysiological study</topic><topic>Equipment Design</topic><topic>Heart - physiology</topic><topic>High-output pacing</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Medical sciences</topic><topic>Membrane Potentials</topic><topic>Myocardium - ultrastructure</topic><topic>Stimulation output</topic><toplevel>online_resources</toplevel><creatorcontrib>Moriguchi, Masahiko</creatorcontrib><creatorcontrib>Niwano, Shinichi</creatorcontrib><creatorcontrib>Yoshizawa, Naoto</creatorcontrib><creatorcontrib>Kitano, Yoshikazu</creatorcontrib><creatorcontrib>Masaki, Yoshihiko</creatorcontrib><creatorcontrib>Maruyama, Shigeyoshi</creatorcontrib><creatorcontrib>Izumi, Tohru</creatorcontrib><collection>Pascal-Francis</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>JAPANESE CIRCULATION JOURNAL</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Moriguchi, Masahiko</au><au>Niwano, Shinichi</au><au>Yoshizawa, Naoto</au><au>Kitano, Yoshikazu</au><au>Masaki, Yoshihiko</au><au>Maruyama, Shigeyoshi</au><au>Izumi, Tohru</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantitative Evaluation of a Directly Depolarized Area Induced by High-Output Pacing on the Cardiac Muscle</atitle><jtitle>JAPANESE CIRCULATION JOURNAL</jtitle><addtitle>JAPANESE CIRCULATION JOURNAL</addtitle><date>2000</date><risdate>2000</risdate><volume>64</volume><issue>11</issue><spage>876</spage><epage>882</epage><pages>876-882</pages><issn>0047-1828</issn><eissn>1347-4839</eissn><coden>JCIRA2</coden><abstract>Quantitative information is needed on the directly depolarized area (DDA) induced by high-output energy during a precise mapping procedure to detect the origin of a tachycardia. In the present study, a DDA caused by high-output energy was quantitatively evaluated in the exposed canine heart. In 8 dogs, the right atrial and ventricular surfaces were exposed through a right thoracotomy and pacing with various outputs was delivered from the epicardial surface. A comb-shaped 16 polar electrode array and/or a 224 polar mat electrode array were used for recording the epicardial electrograms. The local activation time was measured at each electrode site, and the relationship of the distance between the electrode location from the pacing site and the local activation time was plotted and fitted to a primary regression line. The intercept of the regression line on the horizontal axis was defined as the radius of the ‘DDA’ and this was evaluated at each pacing output. The radius of the DDA was 0.6±0.1mm with a 2V and 3.8±0.2mm with a 10V output when it was evaluated in a direction perpendicular to the fiber orientation of the pectinate muscle, 0.8±0.1mm with a 2V and 4.1±0.3mm with a 10V output in a direction parallel to the pectinate muscle fiber orientation, and 0.9±0.3mm with a 2V and 3.6±0.5mm with a 10V output in the right ventricle. The DDA extended according to the increase in stimulation outputs at all sites, and there was no significant difference in the pacing site or the direction of the stimulation propagation. The DDA caused by high-output energy is a purely physical phenomenon that depends only on stimulation output and tissue resistance. The diameter of the DDA exceeded 4mm (ie, the size of a standard tip electrode for catheter ablation) when pacing was delivered with an output greater than 6V.</abstract><cop>Kyoto</cop><pub>The Japanese Circulation Society</pub><pmid>11110434</pmid><doi>10.1253/jcj.64.876</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Animals Biological and medical sciences Cardiac Pacing, Artificial - methods Data Display Directly depolarized area Dogs Electric Stimulation Electrocardiography. Vectocardiography Electrodes Electrodiagnosis. Electric activity recording Electrophysiological study Equipment Design Heart - physiology High-output pacing Investigative techniques, diagnostic techniques (general aspects) Medical sciences Membrane Potentials Myocardium - ultrastructure Stimulation output |
title | Quantitative Evaluation of a Directly Depolarized Area Induced by High-Output Pacing on the Cardiac Muscle |
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