{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T05:54:37Z","timestamp":1781589277469,"version":"3.54.5"},"reference-count":37,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2026,4,5]],"date-time":"2026-04-05T00:00:00Z","timestamp":1775347200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,4,5]],"date-time":"2026-04-05T00:00:00Z","timestamp":1775347200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cardiovasc electrophysiol"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Pulmonary vein isolation (PVI) and posterior wall isolation (PWI) are frequently used in the treatment of persistent atrial fibrillation (AF). Minimal data support adjunct PWI, possibly due to lack of durability via epicardial reconnections.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To determine the impact of very high output PW pace\u2010capture testing in patients with persistent AF on AF\/AT recurrence.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We performed a retrospective study of consecutive patients who underwent radiofrequency ablation for persistent AF and received PVI and PWI, as well as a cavotricuspid isthmus line (CTI). After the creation of three linear PW lesions (roof, carina\u2010to\u2010carina, and inferior PV levels), pace\u2010capture testing was performed on the PW. The first cohort confirmed PWI using 10\u2009mA at 2\u2009ms (10\u2009\u00d7\u20092) to pace capture. Sequentially, the second cohort utilized 20\u2009mA at 10\u2009ms (20\u2009\u00d7\u200910). If the PW was captured, additional lesions were performed. Patients were excluded if additional lesion sets beyond PVI, PWI, and CTI were performed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      A total of 232 patients were included. Of these, 129 (56%) patients were in the 20\u2009\u00d7\u200910 group, and 103 (44%) patients were in the 10\u2009\u00d7\u20092 group. The two groups did not differ in age, sex, proportion of comorbidities, presenting rhythm, left ventricular ejection fraction, or left atrial size. Despite the increase in procedure time and lesion number, in the time\u2010to\u2010event analysis, patients in the 20\u2009\u00d7\u200910 group experienced recurrent AF\/AT more frequently than those in the 10\u2009\u00d7\u20092 group (log rank\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.01).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Testing PWI in persistent AF with pace capture at 20\u2009mA at 10\u2009ms did not improve freedom from arrhythmia and may paradoxically be associated with harm. Our findings question whether PWI, regardless of durability, is effective in treating persistent AF.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/jce.70329","type":"journal-article","created":{"date-parts":[[2026,4,5]],"date-time":"2026-04-05T14:15:18Z","timestamp":1775398518000},"page":"1182-1188","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Utility of Very High Output Pace\u2010Capture Testing for Posterior Wall Isolation in Patients With Persistent Atrial Fibrillation"],"prefix":"10.1111","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8072-6239","authenticated-orcid":false,"given":"Brian","family":"Hsia","sequence":"first","affiliation":[{"name":"Leon H. 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