{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T07:17:57Z","timestamp":1778743077673,"version":"3.51.4"},"reference-count":13,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2020,2,6]],"date-time":"2020-02-06T00:00:00Z","timestamp":1580947200000},"content-version":"vor","delay-in-days":5,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pacing Clinical Electrophis"],"published-print":{"date-parts":[[2020,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Whether cavotricuspid isthmus (CTI) is a region of conduction slowing during typical flutter has been discussed with conflicting results in the literature.<\/jats:p><jats:p>We aimed to evaluate conduction velocity (CV) along the different portions of the typical flutter circuit with a recently proposed method by means of ultra\u2010high\u2010resolution (UHR) mapping.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Consecutive patients referred for typical atrial flutter (AFL) ablation underwent UHR mapping (Rhythmia, Boston Scientific). CVs were measured in the CTI as well as laterally and septally, respectively, from its lateral and septal borders.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 33 patients (mean age: 65 \u00b1 13 years; right atrial volume: 134 \u00b1 57\u00a0mL) were mapped either during ongoing counterclockwise (<jats:italic>n<\/jats:italic>\u00a0=\u00a025), or clockwise (<jats:italic>n<\/jats:italic>\u00a0=\u00a03) AFL (mean cycle length: 264 \u00b1 38\u00a0ms), or during coronary sinus pacing at 400\u00a0ms (<jats:italic>n<\/jats:italic>\u00a0=\u00a01), 500\u00a0ms (<jats:italic>n<\/jats:italic>\u00a0=\u00a01), or 600\u00a0ms (<jats:italic>n<\/jats:italic>\u00a0=\u00a03). A total of 13\u00a0671 \u00b1 7264 electrograms were acquired in 14 \u00b1 9\u00a0min. CTI CV was significantly lower (0.56\u00a0 \u00b1 0.18\u00a0m\/s) in comparison with the lateral CV (1.31 \u00b1 0.29\u00a0m\/s; <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a0.0001) and the septal border CV of the CTI (1.29 \u00b1 0.31\u00a0m\/s; <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a0.0001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>UHR mapping confirmed that CTI CV was systematically twice lower than atrial conduction velocities outside the CTI.<\/jats:p><\/jats:sec>","DOI":"10.1111\/pace.13862","type":"journal-article","created":{"date-parts":[[2019,12,19]],"date-time":"2019-12-19T03:54:40Z","timestamp":1576727680000},"page":"189-193","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Cavotricuspid isthmus is constantly a zone of slow conduction: Data from ultra\u2010high\u2010resolution mapping"],"prefix":"10.1111","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3016-9192","authenticated-orcid":false,"given":"Sok\u2010Sithikun","family":"Bun","sequence":"first","affiliation":[{"name":"Department of Cardiology Pasteur University Hospital  Nice France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Decebal Gabriel","family":"La\u021bcu","sequence":"additional","affiliation":[{"name":"Department of Cardiology Princess Grace Hospital, Monaco (Principality)  France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ahmed Mostfa","family":"Wedn","sequence":"additional","affiliation":[{"name":"Department of Critical Care Cairo University Hospital  Cairo Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fabien","family":"Squara","sequence":"additional","affiliation":[{"name":"Department of Cardiology Pasteur University Hospital  Nice France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Didier","family":"Scarlatti","sequence":"additional","affiliation":[{"name":"Department of Cardiology Pasteur University Hospital  Nice France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guillaume","family":"Theodore","sequence":"additional","affiliation":[{"name":"Department of Cardiology Pasteur University Hospital  Nice France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alaa","family":"Al Amoura","sequence":"additional","affiliation":[{"name":"Department of Cardiology Troyes Hospital  Troyes France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fatima Azzahrae","family":"Bena\u00efch","sequence":"additional","affiliation":[{"name":"Department of Cardiology Princess Grace Hospital, Monaco (Principality)  France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karim","family":"Hasni","sequence":"additional","affiliation":[{"name":"Department of Cardiology Princess Grace Hospital, Monaco (Principality)  France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nadir","family":"Saoudi","sequence":"additional","affiliation":[{"name":"Department of Cardiology Princess Grace Hospital, Monaco (Principality)  France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Emile","family":"Ferrari","sequence":"additional","affiliation":[{"name":"Department of Cardiology Pasteur University Hospital  Nice 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