Biophysical parameters of radiofrequency catheter ablation
Identifieur interne : 000367 ( Istex/Corpus ); précédent : 000366; suivant : 000368Biophysical parameters of radiofrequency catheter ablation
Auteurs : Ellen Hoffmann ; Ralph Haberl ; Regine Pulter ; Michael Gokel ; Gerhard SteinbeckSource :
- International Journal of Cardiology [ 0167-5273 ] ; 1992.
Abstract
Radiofrequency catheter ablation has been shown to be an effective treatment for patients with accessory pathways in Wolff-Parkinson-White syndrome and other supraventricular tachycardias. However, the biophysical parameters used so far in vivo did not correlate to the size of myocardial lesions and provided no information about the myocardial wall contact of the electrode. In this study 104 radiofrequency applications were performed on excised pig myocardium in circulating heparinized pig blood as well as in blood alone, and root mean square (rms) voltage, root mean square current and phase angle were measured using a specially developed device. The calculated effective power and output power differed by only 2–7% when measured at the point of maximum current during coagulation. A drop of current following a rise in impedance led to a phase displacement of more than 80° and thereby to a drop of effective power to 17% of the output power. Hence, apparent output power consists mainly of ineffective power. The time dependent variations of phase angle, impedance and current were found to be useful for distinguishing between the media blood and myocardium. These results show that physical parameters measured during radiofrequency catheter ablation may help to control electrode position in the clinical situation and reduce the number and duration of ineffective energy applications.
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DOI: 10.1016/0167-5273(92)90211-K
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Biophysical parameters of radiofrequency catheter ablation</title><author><name sortKey="Hoffmann, Ellen" sort="Hoffmann, Ellen" uniqKey="Hoffmann E" first="Ellen" last="Hoffmann">Ellen Hoffmann</name><affiliation><mods:affiliation>Department of Medicine University of Munich, Munich, Germany</mods:affiliation></affiliation></author><author><name sortKey="Haberl, Ralph" sort="Haberl, Ralph" uniqKey="Haberl R" first="Ralph" last="Haberl">Ralph Haberl</name><affiliation><mods:affiliation>Department of Medicine University of Munich, Munich, Germany</mods:affiliation></affiliation></author><author><name sortKey="Pulter, Regine" sort="Pulter, Regine" uniqKey="Pulter R" first="Regine" last="Pulter">Regine Pulter</name><affiliation><mods:affiliation>Department of Medicine University of Munich, Munich, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gokel, Michael" sort="Gokel, Michael" uniqKey="Gokel M" first="Michael" last="Gokel">Michael Gokel</name><affiliation><mods:affiliation>Department of Pathology, University of Munich, Munich, Germany</mods:affiliation></affiliation></author><author><name sortKey="Steinbeck, Gerhard" sort="Steinbeck, Gerhard" uniqKey="Steinbeck G" first="Gerhard" last="Steinbeck">Gerhard Steinbeck</name><affiliation><mods:affiliation>Department of Medicine University of Munich, Munich, Germany</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:8E8436A1FC4EA19F6F958C67EB8A2477E84C3516</idno><date when="1992" year="1992">1992</date><idno type="doi">10.1016/0167-5273(92)90211-K</idno><idno type="url">https://api.istex.fr/document/8E8436A1FC4EA19F6F958C67EB8A2477E84C3516/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000367</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000367</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Biophysical parameters of radiofrequency catheter ablation</title><author><name sortKey="Hoffmann, Ellen" sort="Hoffmann, Ellen" uniqKey="Hoffmann E" first="Ellen" last="Hoffmann">Ellen Hoffmann</name><affiliation><mods:affiliation>Department of Medicine University of Munich, Munich, Germany</mods:affiliation></affiliation></author><author><name sortKey="Haberl, Ralph" sort="Haberl, Ralph" uniqKey="Haberl R" first="Ralph" last="Haberl">Ralph Haberl</name><affiliation><mods:affiliation>Department of Medicine University of Munich, Munich, Germany</mods:affiliation></affiliation></author><author><name sortKey="Pulter, Regine" sort="Pulter, Regine" uniqKey="Pulter R" first="Regine" last="Pulter">Regine Pulter</name><affiliation><mods:affiliation>Department of Medicine University of Munich, Munich, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gokel, Michael" sort="Gokel, Michael" uniqKey="Gokel M" first="Michael" last="Gokel">Michael Gokel</name><affiliation><mods:affiliation>Department of Pathology, University of Munich, Munich, Germany</mods:affiliation></affiliation></author><author><name sortKey="Steinbeck, Gerhard" sort="Steinbeck, Gerhard" uniqKey="Steinbeck G" first="Gerhard" last="Steinbeck">Gerhard Steinbeck</name><affiliation><mods:affiliation>Department of Medicine University of Munich, Munich, Germany</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">International Journal of Cardiology</title><title level="j" type="abbrev">IJCA</title><idno type="ISSN">0167-5273</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992">1992</date><biblScope unit="volume">37</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="213">213</biblScope><biblScope unit="page" to="222">222</biblScope></imprint><idno type="ISSN">0167-5273</idno></series><idno type="istex">8E8436A1FC4EA19F6F958C67EB8A2477E84C3516</idno><idno type="DOI">10.1016/0167-5273(92)90211-K</idno><idno type="PII">0167-5273(92)90211-K</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0167-5273</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Radiofrequency catheter ablation has been shown to be an effective treatment for patients with accessory pathways in Wolff-Parkinson-White syndrome and other supraventricular tachycardias. However, the biophysical parameters used so far in vivo did not correlate to the size of myocardial lesions and provided no information about the myocardial wall contact of the electrode. In this study 104 radiofrequency applications were performed on excised pig myocardium in circulating heparinized pig blood as well as in blood alone, and root mean square (rms) voltage, root mean square current and phase angle were measured using a specially developed device. The calculated effective power and output power differed by only 2–7% when measured at the point of maximum current during coagulation. A drop of current following a rise in impedance led to a phase displacement of more than 80° and thereby to a drop of effective power to 17% of the output power. Hence, apparent output power consists mainly of ineffective power. The time dependent variations of phase angle, impedance and current were found to be useful for distinguishing between the media blood and myocardium. These results show that physical parameters measured during radiofrequency catheter ablation may help to control electrode position in the clinical situation and reduce the number and duration of ineffective energy applications.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>Ellen Hoffmann</name><affiliations><json:string>Department of Medicine University of Munich, Munich, Germany</json:string></affiliations></json:item><json:item><name>Ralph Haberl</name><affiliations><json:string>Department of Medicine University of Munich, Munich, Germany</json:string></affiliations></json:item><json:item><name>Regine Pulter</name><affiliations><json:string>Department of Medicine University of Munich, Munich, Germany</json:string></affiliations></json:item><json:item><name>Michael Gokel</name><affiliations><json:string>Department of Pathology, University of Munich, Munich, Germany</json:string></affiliations></json:item><json:item><name>Gerhard Steinbeck</name><affiliations><json:string>Department of Medicine University of Munich, Munich, Germany</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Electrophysiology</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Radiofrequency energy</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Catheter ablation</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Phase angle</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Myocardial necrosis</value></json:item></subject><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>Radiofrequency catheter ablation has been shown to be an effective treatment for patients with accessory pathways in Wolff-Parkinson-White syndrome and other supraventricular tachycardias. However, the biophysical parameters used so far in vivo did not correlate to the size of myocardial lesions and provided no information about the myocardial wall contact of the electrode. In this study 104 radiofrequency applications were performed on excised pig myocardium in circulating heparinized pig blood as well as in blood alone, and root mean square (rms) voltage, root mean square current and phase angle were measured using a specially developed device. The calculated effective power and output power differed by only 2–7% when measured at the point of maximum current during coagulation. A drop of current following a rise in impedance led to a phase displacement of more than 80° and thereby to a drop of effective power to 17% of the output power. Hence, apparent output power consists mainly of ineffective power. The time dependent variations of phase angle, impedance and current were found to be useful for distinguishing between the media blood and myocardium. These results show that physical parameters measured during radiofrequency catheter ablation may help to control electrode position in the clinical situation and reduce the number and duration of ineffective energy applications.</abstract><qualityIndicators><score>7.091</score><pdfVersion>1.4</pdfVersion><pdfPageSize>545 x 749 pts</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>5</keywordCount><abstractCharCount>1399</abstractCharCount><pdfWordCount>4047</pdfWordCount><pdfCharCount>25937</pdfCharCount><pdfPageCount>10</pdfPageCount><abstractWordCount>212</abstractWordCount></qualityIndicators><title>Biophysical parameters of radiofrequency catheter ablation</title><pii><json:string>0167-5273(92)90211-K</json:string></pii><genre><json:string>research-article</json:string></genre><serie><volume>7</volume><pages><last>569</last><first>539</first></pages><language><json:string>unknown</json:string></language><title>Cardiac arrhythmias: where to go from here?</title></serie><host><volume>37</volume><pii><json:string>S0167-5273(00)X0219-7</json:string></pii><pages><last>222</last><first>213</first></pages><issn><json:string>0167-5273</json:string></issn><issue>2</issue><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><title>International Journal of Cardiology</title><publicationDate>1992</publicationDate></host><categories><wos><json:string>science</json:string><json:string>cardiac & cardiovascular systems</json:string></wos><scienceMetrix><json:string>health sciences</json:string><json:string>clinical medicine</json:string><json:string>cardiovascular system & hematology</json:string></scienceMetrix></categories><publicationDate>1992</publicationDate><copyrightDate>1992</copyrightDate><doi><json:string>10.1016/0167-5273(92)90211-K</json:string></doi><id>8E8436A1FC4EA19F6F958C67EB8A2477E84C3516</id><score>0.1380446</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/8E8436A1FC4EA19F6F958C67EB8A2477E84C3516/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/8E8436A1FC4EA19F6F958C67EB8A2477E84C3516/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/8E8436A1FC4EA19F6F958C67EB8A2477E84C3516/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a">Biophysical parameters of radiofrequency catheter ablation</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>ELSEVIER</publisher><availability><p>ELSEVIER</p></availability><date>1992</date></publicationStmt><notesStmt><note>This study was supported by the Deutsche Forschungsgemeinschaft, Bonn, Germany.</note><note type="content">Section title: Original study</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a">Biophysical parameters of radiofrequency catheter ablation</title><author xml:id="author-1"><persName><forename type="first">Ellen</forename><surname>Hoffmann</surname></persName><note type="correspondence"><p>Correspondence to: Dr. med. Ellen Hoffmann, Medizinische Klinik I, Klinikum Großhadern, Marchioninistraße 15, D-8000 Munich, Germany. Tel. 089/7095-1.</p></note><affiliation>Department of Medicine University of Munich, Munich, Germany</affiliation></author><author xml:id="author-2"><persName><forename type="first">Ralph</forename><surname>Haberl</surname></persName><affiliation>Department of Medicine University of Munich, Munich, Germany</affiliation></author><author xml:id="author-3"><persName><forename type="first">Regine</forename><surname>Pulter</surname></persName><affiliation>Department of Medicine University of Munich, Munich, Germany</affiliation></author><author xml:id="author-4"><persName><forename type="first">Michael</forename><surname>Gokel</surname></persName><affiliation>Department of Pathology, University of Munich, Munich, Germany</affiliation></author><author xml:id="author-5"><persName><forename type="first">Gerhard</forename><surname>Steinbeck</surname></persName><affiliation>Department of Medicine University of Munich, Munich, Germany</affiliation></author></analytic><monogr><title level="j">International Journal of Cardiology</title><title level="j" type="abbrev">IJCA</title><idno type="pISSN">0167-5273</idno><idno type="PII">S0167-5273(00)X0219-7</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992"></date><biblScope unit="volume">37</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="213">213</biblScope><biblScope unit="page" to="222">222</biblScope></imprint></monogr><idno type="istex">8E8436A1FC4EA19F6F958C67EB8A2477E84C3516</idno><idno type="DOI">10.1016/0167-5273(92)90211-K</idno><idno type="PII">0167-5273(92)90211-K</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1992</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Radiofrequency catheter ablation has been shown to be an effective treatment for patients with accessory pathways in Wolff-Parkinson-White syndrome and other supraventricular tachycardias. However, the biophysical parameters used so far in vivo did not correlate to the size of myocardial lesions and provided no information about the myocardial wall contact of the electrode. In this study 104 radiofrequency applications were performed on excised pig myocardium in circulating heparinized pig blood as well as in blood alone, and root mean square (rms) voltage, root mean square current and phase angle were measured using a specially developed device. The calculated effective power and output power differed by only 2–7% when measured at the point of maximum current during coagulation. A drop of current following a rise in impedance led to a phase displacement of more than 80° and thereby to a drop of effective power to 17% of the output power. Hence, apparent output power consists mainly of ineffective power. The time dependent variations of phase angle, impedance and current were found to be useful for distinguishing between the media blood and myocardium. These results show that physical parameters measured during radiofrequency catheter ablation may help to control electrode position in the clinical situation and reduce the number and duration of ineffective energy applications.</p></abstract><textClass><keywords scheme="keyword"><list><head>article-category</head><item><term>Electrophysiology</term></item></list></keywords></textClass><textClass><keywords scheme="keyword"><list><head>Keywords</head><item><term>Radiofrequency energy</term></item><item><term>Catheter ablation</term></item><item><term>Phase angle</term></item><item><term>Myocardial necrosis</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1992">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/8E8436A1FC4EA19F6F958C67EB8A2477E84C3516/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>IJCA</jid><aid>9290211K</aid><ce:pii>0167-5273(92)90211-K</ce:pii><ce:doi>10.1016/0167-5273(92)90211-K</ce:doi><ce:copyright type="unknown" year="1992"></ce:copyright><ce:doctopics><ce:doctopic><ce:text>Electrophysiology</ce:text></ce:doctopic></ce:doctopics></item-info><head><ce:article-footnote><ce:label>☆</ce:label><ce:note-para>This study was supported by the Deutsche Forschungsgemeinschaft, Bonn, Germany.</ce:note-para></ce:article-footnote><ce:dochead><ce:textfn>Original study</ce:textfn></ce:dochead><ce:title>Biophysical parameters of radiofrequency catheter ablation</ce:title><ce:author-group><ce:author><ce:given-name>Ellen</ce:given-name><ce:surname>Hoffmann</ce:surname><ce:cross-ref refid="COR1"><ce:sup>∗</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Ralph</ce:given-name><ce:surname>Haberl</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Regine</ce:given-name><ce:surname>Pulter</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Michael</ce:given-name><ce:surname>Gokel</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Gerhard</ce:given-name><ce:surname>Steinbeck</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:affiliation id="AFF1"><ce:label>a</ce:label><ce:textfn>Department of Medicine University of Munich, Munich, Germany</ce:textfn></ce:affiliation><ce:affiliation id="AFF2"><ce:label>b</ce:label><ce:textfn>Department of Pathology, University of Munich, Munich, Germany</ce:textfn></ce:affiliation><ce:correspondence id="COR1"><ce:label>∗</ce:label><ce:text>Correspondence to: Dr. med. Ellen Hoffmann, Medizinische Klinik I, Klinikum Großhadern, Marchioninistraße 15, D-8000 Munich, Germany. Tel. 089/7095-1.</ce:text></ce:correspondence></ce:author-group><ce:date-received day="25" month="1" year="1992"></ce:date-received><ce:date-accepted day="1" month="7" year="1992"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>Radiofrequency catheter ablation has been shown to be an effective treatment for patients with accessory pathways in Wolff-Parkinson-White syndrome and other supraventricular tachycardias. However, the biophysical parameters used so far in vivo did not correlate to the size of myocardial lesions and provided no information about the myocardial wall contact of the electrode. In this study 104 radiofrequency applications were performed on excised pig myocardium in circulating heparinized pig blood as well as in blood alone, and root mean square (rms) voltage, root mean square current and phase angle were measured using a specially developed device. The calculated effective power and output power differed by only 2–7% when measured at the point of maximum current during coagulation. A drop of current following a rise in impedance led to a phase displacement of more than 80° and thereby to a drop of effective power to 17% of the output power. Hence, apparent output power consists mainly of ineffective power. The time dependent variations of phase angle, impedance and current were found to be useful for distinguishing between the media blood and myocardium. These results show that physical parameters measured during radiofrequency catheter ablation may help to control electrode position in the clinical situation and reduce the number and duration of ineffective energy applications.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:keywords><ce:section-title>Keywords</ce:section-title><ce:keyword><ce:text>Radiofrequency energy</ce:text></ce:keyword><ce:keyword><ce:text>Catheter ablation</ce:text></ce:keyword><ce:keyword><ce:text>Phase angle</ce:text></ce:keyword><ce:keyword><ce:text>Myocardial necrosis</ce:text></ce:keyword></ce:keywords></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Biophysical parameters of radiofrequency catheter ablation</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Biophysical parameters of radiofrequency catheter ablation</title></titleInfo><name type="personal"><namePart type="given">Ellen</namePart><namePart type="family">Hoffmann</namePart><affiliation>Department of Medicine University of Munich, Munich, Germany</affiliation><description>Correspondence to: Dr. med. Ellen Hoffmann, Medizinische Klinik I, Klinikum Großhadern, Marchioninistraße 15, D-8000 Munich, Germany. Tel. 089/7095-1.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Ralph</namePart><namePart type="family">Haberl</namePart><affiliation>Department of Medicine University of Munich, Munich, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Regine</namePart><namePart type="family">Pulter</namePart><affiliation>Department of Medicine University of Munich, Munich, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Michael</namePart><namePart type="family">Gokel</namePart><affiliation>Department of Pathology, University of Munich, Munich, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Gerhard</namePart><namePart type="family">Steinbeck</namePart><affiliation>Department of Medicine University of Munich, Munich, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1992</dateIssued><copyrightDate encoding="w3cdtf">1992</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Radiofrequency catheter ablation has been shown to be an effective treatment for patients with accessory pathways in Wolff-Parkinson-White syndrome and other supraventricular tachycardias. However, the biophysical parameters used so far in vivo did not correlate to the size of myocardial lesions and provided no information about the myocardial wall contact of the electrode. In this study 104 radiofrequency applications were performed on excised pig myocardium in circulating heparinized pig blood as well as in blood alone, and root mean square (rms) voltage, root mean square current and phase angle were measured using a specially developed device. The calculated effective power and output power differed by only 2–7% when measured at the point of maximum current during coagulation. A drop of current following a rise in impedance led to a phase displacement of more than 80° and thereby to a drop of effective power to 17% of the output power. Hence, apparent output power consists mainly of ineffective power. The time dependent variations of phase angle, impedance and current were found to be useful for distinguishing between the media blood and myocardium. These results show that physical parameters measured during radiofrequency catheter ablation may help to control electrode position in the clinical situation and reduce the number and duration of ineffective energy applications.</abstract><note>This study was supported by the Deutsche Forschungsgemeinschaft, Bonn, Germany.</note><note type="content">Section title: Original study</note><subject><genre>article-category</genre><topic>Electrophysiology</topic></subject><subject><genre>Keywords</genre><topic>Radiofrequency energy</topic><topic>Catheter ablation</topic><topic>Phase angle</topic><topic>Myocardial necrosis</topic></subject><relatedItem type="host"><titleInfo><title>International Journal of Cardiology</title></titleInfo><titleInfo type="abbreviated"><title>IJCA</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">199211</dateIssued></originInfo><identifier type="ISSN">0167-5273</identifier><identifier type="PII">S0167-5273(00)X0219-7</identifier><part><date>199211</date><detail type="volume"><number>37</number><caption>vol.</caption></detail><detail type="issue"><number>2</number><caption>no.</caption></detail><extent unit="issue pages"><start>131</start><end>276</end></extent><extent unit="pages"><start>213</start><end>222</end></extent></part></relatedItem><identifier type="istex">8E8436A1FC4EA19F6F958C67EB8A2477E84C3516</identifier><identifier type="DOI">10.1016/0167-5273(92)90211-K</identifier><identifier type="PII">0167-5273(92)90211-K</identifier><recordInfo><recordContentSource>ELSEVIER</recordContentSource></recordInfo></mods></metadata></istex></record>Pour manipuler ce document sous Unix (Dilib)
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