{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,14]],"date-time":"2026-04-14T20:35:26Z","timestamp":1776198926989,"version":"3.50.1"},"reference-count":20,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2024,1,7]],"date-time":"2024-01-07T00:00:00Z","timestamp":1704585600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cardiovasc electrophysiol"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>The mechanism of typical slow\u2010fast atrioventricular nodal re\u2010entrant tachycardia (AVNRT) and its anatomical and electrophysiological circuit inside the right atrium (RA) and Koch's Triangle (KT) are not well known.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>To identify the potentials of the compact AV node and inferior extensions and to perform accurate mapping of the RA and KT in sinus rhythm (SR) and during AVNRT, to define the tachycardia circuit.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Consecutive patients with typical AVNRT were enrolled in 12 Italian centers and underwent mapping and ablation by means of a basket catheter with small electrode spacing for ultrahigh\u2010density mapping and a modified signal\u2010filtering toolset to record the potentials of the AV nodal structures.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Forty\u2010five consecutive cases of successful ablation of typical slow\u2010fast AVNRT were included. The mean SR cycle length (CL) was 784.1\u2009\u00b1\u20096\u2009ms and the mean tachycardia CL was 361.2\u2009\u00b1\u200954\u2009ms. The AV node potential had a significantly shorter duration and higher amplitude in sinus rhythm than during tachycardia (60\u2009\u00b1\u200940\u2009ms vs. 160\u2009\u00b1\u200940\u2009ms, <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001 and 0.3\u2009\u00b1\u20090.2\u2009mV vs. 0.09\u2009\u00b1\u20090.12\u2009mV, <jats:italic>p<\/jats:italic>\u2009&lt;\u2009.001, res<jats:italic>p<\/jats:italic>ectively). The nodal potential duration extension was 169.4\u2009\u00b1\u200931\u2009ms, resulting in a time\u2010window coverage of 47.6\u2009\u00b1\u20099%. The recording of AV nodal structure potentials enabled us to obtain 100% coverage of the tachycardia CL during slow\u2010fast AVNRT.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Detailed recording of the potentials of nodal structures is possible by means of multipolar catheters for ultrahigh\u2010density mapping, allowing 100% of the AVNRT CL to be covered. These results also have clinical implications for the ablation of right\u2010septal and para\u2010septal arrhythmias.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jce.16168","type":"journal-article","created":{"date-parts":[[2024,1,8]],"date-time":"2024-01-08T05:24:20Z","timestamp":1704691460000},"page":"379-388","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["High\u2010density mapping of Koch's triangle during sinus rhythm and typical atrioventricular nodal re\u2010entrant tachycardia, integrated with direct recording of atrio\u2010ventricular node structure potential"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5476-4124","authenticated-orcid":false,"given":"Claudio","family":"Pandozi","sequence":"first","affiliation":[{"name":"Division of Cardiology San Filippo Neri Hospital Rome Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Giovanni 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Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrea","family":"Matteucci","sequence":"additional","affiliation":[{"name":"Division of Cardiology San Filippo Neri Hospital Rome Italy"},{"name":"Department of System and Experimental Medicine University of Rome \u2018Tor Vergata Rome Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9480-1209","authenticated-orcid":false,"given":"Marco Valerio","family":"Mariani","sequence":"additional","affiliation":[{"name":"Azienda ospedaliero\u2010universitaria Policlinico Umberto I Rome Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniele","family":"Nicolis","sequence":"additional","affiliation":[{"name":"Ospedale Carlo Poma Mantua Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1421-9033","authenticated-orcid":false,"given":"Luca","family":"Segreti","sequence":"additional","affiliation":[{"name":"AOU Pisana Pisa Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5654-4686","authenticated-orcid":false,"given":"Andrea Antonio","family":"Papa","sequence":"additional","affiliation":[{"name":"Cardiology and Syncope Unit, Department of Medical Translational Sciences University of Campania \u201cLuigi Vanvitelli\u201d\u2010Monaldi Hospital Naples Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Carla","family":"Casale","sequence":"additional","affiliation":[{"name":"ASST Rhodense Garbagnate Milanese (MI) Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marco","family":"Galeazzi","sequence":"additional","affiliation":[{"name":"Division of Cardiology San Filippo Neri 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