{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T23:22:41Z","timestamp":1791847361518,"version":"4.3.4"},"reference-count":20,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2019,6,25]],"date-time":"2019-06-25T00:00:00Z","timestamp":1561420800000},"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":[[2019,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Cardiac memory is recognized as altered T\u2010waves when the sinus rhythm resumes after an abnormal myocardial activation period that recovers slowly over several weeks. The T\u2010wave changes after ablation of frequent premature ventricular contractions (PVCs) as cardiac memory was not known.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>This study identified whether cardiac memory exists after successful ablation of PVCs from the right ventricular outflow tract (RVOT).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We investigated 45 patients who underwent successful ablation of PVCs from RVOT and 10 patients who underwent unsuccessful ablation. We analyzed the amplitude of the T\u2010wave, QT intervals, and QRST time\u2010integral values of a 12\u2010lead electrocardiogram before ablation and 1\u2009day, 3 days, and 1 month after ablation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In the successful ablation group, the amplitude of the T\u2010wave and QRST time\u2010integral values of lead II, III, aVR, aVL, and aVF significantly changed after ablation and gradually normalized within 1 month. In addition, if the number of pre\u2010ablation PVCs was small, then the corresponding impact was also small. However, the greater the number of pre\u2010ablation PVCs, the more prominent the changes. Significant changes were not observed in the unsuccessful ablation group.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>When ablation of PVCs from RVOT was successful, primary T\u2010wave changes because of cardiac memory and the gradual normalization of the amplitude of the T\u2010wave were observed. No significant T\u2010wave changes were detected after unsuccessful ablation.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jce.14008","type":"journal-article","created":{"date-parts":[[2019,6,3]],"date-time":"2019-06-03T10:56:45Z","timestamp":1559559405000},"page":"1549-1556","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["T\u2010wave changes of cardiac memory caused by frequent premature ventricular contractions originating from the right ventricular outflow tract"],"prefix":"10.1111","volume":"30","author":[{"given":"Yusuke","family":"Sakamoto","sequence":"first","affiliation":[{"name":"Department of Cardiology Nagoya University Graduate School of Medicine Nagoya Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5732-5672","authenticated-orcid":false,"given":"Yasuya","family":"Inden","sequence":"additional","affiliation":[{"name":"Department of Cardiology Nagoya 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