{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,12]],"date-time":"2026-02-12T07:37:54Z","timestamp":1770881874846,"version":"3.50.1"},"reference-count":17,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2019,2,2]],"date-time":"2019-02-02T00:00:00Z","timestamp":1549065600000},"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":[[2019,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>While characteristic waveforms of 12\u2010lead electrocardiograms have been reported to predict the epicardial origin of ventricular tachycardia (VT), it has not been fully examined whether ventricular intracardiac electrograms (VEGMs) recorded from the implantable cardioverter defibrillator (ICD) via telemetry can determine the origin of VT or not. The aim of this study was to investigate the VEGM characteristics of VT originating from the epicardia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method and Results<\/jats:title><jats:p>Intracardiac VEGMs of the induced VTs, with detected sites of origin during the VT study, were recorded in 15 (23 VTs) of the 46 patients. The characteristics of the 23 VTs were evaluated using far\u2010field and near\u2010field VEGMs recorded via telemetry. Five of 23 VTs were found to be focused on the epicardial site (epi group) and 18 VTs were focused on the endocardium (endo group). VTs of the epi group had longer VEGM duration in far\u2010field EGM than those of the endo group (epi group: 240\u2009\u00b1\u200949 ms vs endo group: 153\u2009\u00b1\u200945 ms; <jats:italic>P<\/jats:italic>\u2009=\u20090.002) and the duration from the onset to the peak of VEGM was also longer than that of the endo group (epi group: 153\u2009\u00b1\u200953 ms vs endo group: 63\u2009\u00b1\u200928 ms; <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.001). There was no difference in the V wave duration in tip\u2010ring EGM between both groups (epi group: 122\u2009\u00b1\u200952 ms vs endo group: 98\u2009\u00b1\u20096 ms; <jats:italic>P<\/jats:italic>\u2009=\u20090.377).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Evaluation of intracardiac VEGM before VT ablation may be helpful to predict the epicardial origin of VT in patients with an ICD.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jce.13854","type":"journal-article","created":{"date-parts":[[2019,2,2]],"date-time":"2019-02-02T06:58:44Z","timestamp":1549090724000},"page":"575-581","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Characteristics of ventricular intracardiac electrograms of ventricular tachycardias originating from the epicardia in patients with an implantable cardioverter defibrillator"],"prefix":"10.1111","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6431-9278","authenticated-orcid":false,"given":"Iwanari","family":"Kawamura","sequence":"first","affiliation":[{"name":"Department of Cardiology Tokyo Metropolitan Hiroo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seiji","family":"Fukamizu","sequence":"additional","affiliation":[{"name":"Department of Cardiology Tokyo Metropolitan Hiroo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7557-1727","authenticated-orcid":false,"given":"Marina","family":"Arai","sequence":"additional","affiliation":[{"name":"Department of Cardiology Tokyo Metropolitan Hiroo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dai","family":"Inagaki","sequence":"additional","affiliation":[{"name":"Department of Cardiology Tokyo Metropolitan Hiroo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomonori","family":"Miyabe","sequence":"additional","affiliation":[{"name":"Department of Cardiology Tokyo Metropolitan Hiroo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2118-0755","authenticated-orcid":false,"given":"Satoshi","family":"Miyazawa","sequence":"additional","affiliation":[{"name":"Department of Cardiology Tokyo Metropolitan Hiroo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takeshi","family":"Kitamura","sequence":"additional","affiliation":[{"name":"Department of Cardiology Tokyo Metropolitan Hiroo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rintaro","family":"Hojo","sequence":"additional","affiliation":[{"name":"Department of Cardiology Tokyo Metropolitan Hiroo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitsuhiro","family":"Nishizaki","sequence":"additional","affiliation":[{"name":"Health Care Center, Internal Medicine and Cardiology, Kanto Gakuin University Yokohama Kanagawa Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Harumizu","family":"Sakurada","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Tokyo Metropolitan Health and Medical Treatment Corporation Ohkubo Hospital Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masayasu","family":"Hiraoka","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Tokyo Medical and Dental, University Tokyo 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