{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,8]],"date-time":"2026-05-08T05:01:17Z","timestamp":1778216477179,"version":"3.51.4"},"reference-count":22,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2021,11,5]],"date-time":"2021-11-05T00:00:00Z","timestamp":1636070400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Arrhythmia"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>This study aimed to clarify the clinical outcomes of cryoballoon ablation of the left atrial (LA) posterior wall (LAPW), including the LA roof, in patients with non\u2010paroxysmal atrial fibrillation (AF).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We analyzed the outcomes of 284 patients with non\u2010paroxysmal AF, of whom 210 underwent the cryoballoon ablation of the LAPW, including the LA roof, in addition to pulmonary vein isolation with a cryoballoon.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Complete conduction block at the LA roof was obtained in 95.7% (201\/210) of patients, and LAPW was isolated in 83.3% (130\/156) of patients. Over 372 (range, 208\u2013477) days of follow\u2010up, atrial arrhythmia recurrence was observed in 84 (29.6%) patients, and atrial tachycardia (AT) recurrence accounted for 27.4% of cases. The prevalence of LA roof cryoballoon ablation was significantly higher in patients without recurrence than in those with recurrence (78.6% vs. 63.1%, respectively; <jats:italic>p<\/jats:italic>\u00a0=\u00a0.01), especially those with persistent AF recurrence (77.0% vs. 55.0%, <jats:italic>p<\/jats:italic>\u00a0=\u00a0.01). No significant difference was found in the prevalence of AT recurrence between patients who had undergone additional LAPW ablation and those who had not. Durable LA roof lesions were confirmed in 29 (72.5%) of 40 patients who underwent redo ablation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Cryoballoon ablation of the LAPW leads to a sufficient acute success rate of complete conduction block and durable lesions of the LA roof without increasing AT recurrence risk. The prevalence of persistent AF recurrence decreases after additional cryoballoon ablation of the LAPW in patients with non\u2010paroxysmal AF.<\/jats:p><\/jats:sec>","DOI":"10.1002\/joa3.12654","type":"journal-article","created":{"date-parts":[[2021,11,5]],"date-time":"2021-11-05T09:12:34Z","timestamp":1636103554000},"page":"1477-1487","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Cryoballoon ablation of the left atrial posterior wall reduces recurrence of persistent atrial fibrillation in patients with non\u2010paroxysmal atrial fibrillation"],"prefix":"10.1002","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1781-9218","authenticated-orcid":false,"given":"Takatoshi","family":"Shigeta","sequence":"first","affiliation":[{"name":"Heart Center Japan Red Cross Yokohama City Bay Hospital Yokohama City Kanagawa Japan"},{"name":"Department of Cardiovascular Medicine Tokyo Medical and Dental University Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuteru","family":"Yamauchi","sequence":"additional","affiliation":[{"name":"Heart Center Japan Red Cross Yokohama City Bay Hospital Yokohama City Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2588-3757","authenticated-orcid":false,"given":"Yuichiro","family":"Sagawa","sequence":"additional","affiliation":[{"name":"Heart Center Japan Red Cross Yokohama City Bay Hospital Yokohama City Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atsuhito","family":"Oda","sequence":"additional","affiliation":[{"name":"Heart Center Japan Red Cross Yokohama City Bay Hospital Yokohama City Kanagawa 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