{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T16:17:31Z","timestamp":1783009051937,"version":"3.54.5"},"reference-count":9,"publisher":"Oxford University Press (OUP)","issue":"7","license":[{"start":{"date-parts":[[2026,6,23]],"date-time":"2026-06-23T00:00:00Z","timestamp":1782172800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,7,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The superior vena cava (SVC) is a well-recognized non-pulmonary vein (PV) focus in atrial fibrillation (AF); however, intra-SVC re-entrant atrial tachycardia (AT) is extremely rare.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case summary<\/jats:title>\n                    <jats:p>An 83-year-old woman with a history of PV isolation using radiofrequency ablation 1 year earlier was referred for a second ablation due to recurrent AT. Activation mapping of the AT demonstrated a re-entrant circuit involving the left atrial (LA) posterior wall. Because bilateral PVs were reconnected, pulsed-field ablation (PFA), including PV re-isolation and LA posterior wall isolation, was performed using a circular multi-electrode array PFA catheter. The initial PFA application did not terminate the tachycardia; however, the arrhythmia transitioned to a different AT. High-resolution mapping revealed a re-entrant circuit confined within the SVC sleeves, characterized by transverse re-entrant propagation. Entrainment pacing confirmed intra-SVC re-entry. Circumferential PFA was delivered to the SVC during sinus rhythm, achieving SVC isolation without sinus node dysfunction or phrenic nerve palsy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>This case demonstrates effective management of intra-SVC re-entrant AT using a circular multi-electrode PFA catheter. High-resolution mapping identified a rare re-entrant circuit confined to the SVC. Owing to its tissue selectivity, PFA enables safe and effective SVC isolation while minimizing the risk of phrenic nerve injury.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/ehjcr\/ytag478","type":"journal-article","created":{"date-parts":[[2026,6,21]],"date-time":"2026-06-21T11:33:35Z","timestamp":1782041615000},"source":"Crossref","is-referenced-by-count":0,"title":["Intra-SVC re-entrant atrial tachycardia successfully treated with a circular multi-electrode array pulsed-field ablation catheter\u2014case report"],"prefix":"10.1093","volume":"10","author":[{"given":"Takeru","family":"Ikenaga","sequence":"first","affiliation":[{"name":"Division of Cardiology, Cardiovascular and Aortic Center, Saiseikai Fukuoka General Hospital , 1-3-46 Tenjin, Chuo-ku, Fukuoka 810-0001 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