{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,2,21]],"date-time":"2025-02-21T11:25:46Z","timestamp":1740137146363,"version":"3.37.3"},"reference-count":21,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2020,12,29]],"date-time":"2020-12-29T00:00:00Z","timestamp":1609200000000},"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":[[2021,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>The right atrial posterior wall (RAPW) is known to form a conduction barrier during typical atrial flutter (AFL). We evaluated the transverse conduction properties of RAPW in patients with and without typical AFL using an ultrahigh resolution electroanatomical mapping system.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods and Results<\/jats:title><jats:p>This study included 41 patients who underwent catheter ablation of AF, typical or atypical AFL, in whom we performed RAPW mapping with an ultrahigh resolution mapping system during typical AFL and coronary sinus ostial pacing with three different pacing cycle lengths (PCLs) (1) PCL1: PCL within 40\u2009ms of the AFL cycle length in patients with typical AFL or 250\u2013300\u2009ms for those without, (2) PCL2: 400\u2009ms, (3) PCL3: PCL just faster than the sinus rate. Local RAPW conduction block was evaluated by propagation mapping and local double potentials separated by an isoelectric line. The functional block was defined as areas blocked during shorter PCLs but conductive during longer PCLs. The degree of blockade was calculated by dividing the blocked length by RAPW length\u00a0(%blockade). Only two patients demonstrated a fixed complete RAPW block (100%, %blockade). Thirty\u2010one patients demonstrated a partial block of RAPW, and the %blockade during PCL1\u20103 was 49.4\u2009\u00b1\u200919.8%, 39.5\u2009\u00b1\u200919.2%, and 35.0\u2009\u00b1\u200922.9% in this group, respectively. Functional block areas were frequently observed above the fixed block area adjacent to the RA\u2010inferior vena cava junction. Transverse conduction block was more frequently observed in patients with typical AFL at any longitudinal level of RAPW.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>RAPW transverse conduction block is lower\u2010side dominant and greater in patients with typical AFL than those without.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jce.14850","type":"journal-article","created":{"date-parts":[[2020,12,24]],"date-time":"2020-12-24T14:19:12Z","timestamp":1608819552000},"page":"297-304","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Ultrahigh resolution electroanatomical mapping of the transverse conduction of the right atrial posterior wall in cases with and without typical atrial flutter"],"prefix":"10.1111","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9191-7153","authenticated-orcid":false,"given":"Takayuki","family":"Sekihara","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shinsuke","family":"Miyazaki","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Moeko","family":"Nagao","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shota","family":"Kakehashi","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Moe","family":"Mukai","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daisetsu","family":"Aoyama","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Minoru","family":"Nodera","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomoya","family":"Eguchi","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kanae","family":"Hasegawa","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroyasu","family":"Uzui","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Tada","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine, Faculty of Medical Sciences University of Fukui  Fukui Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,12,29]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.92.7.1839"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.94.3.398"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1540-8167.2004.40483.x"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-8167.2012.02313.x"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-8159.2008.01157.x"},{"issue":"9","key":"e_1_2_7_7_1","first-page":"971","article-title":"New insights into an old arrhythmia: high\u2010resolution mapping demonstrates conduction and substrate variability in right atrial macro\u2013re\u2010entrant tachycardia","volume":"3","author":"Pathik B","year":"2017","journal-title":"J Am\u00a0Coll\u00a0Cardiol: 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