{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T09:18:49Z","timestamp":1787735929519,"version":"build-2784847793"},"reference-count":21,"publisher":"Elsevier BV","issue":"9","license":[{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T00:00:00Z","timestamp":1777420800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","heartrhythmjournal.com","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Heart Rhythm"],"published-print":{"date-parts":[[2026,9]]},"DOI":"10.1016\/j.hrthm.2026.04.044","type":"journal-article","created":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T23:13:28Z","timestamp":1777590808000},"page":"e1991-e1999","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":0,"title":["Baseline QRS axis distinguishes para-Hisian PVC from outflow tract PVCs"],"prefix":"10.1016","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-8142-8000","authenticated-orcid":false,"given":"Masafumi","family":"Sugawara","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jakub","family":"Sroubek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Justin","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bryan","family":"Baranowski","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mandeep","family":"Bhargava","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Callahan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mina","family":"Chung","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Dresing","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ayman","family":"Hussein","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Kanj","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arshneel","family":"Kochar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert","family":"Koeth","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Martin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Walid","family":"Saliba","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tyler","family":"Taigen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Niraj","family":"Varma","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Oussama","family":"Wazni","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pasquale","family":"Santangeli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9218-1966","authenticated-orcid":false,"given":"Koji","family":"Higuchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.hrthm.2026.04.044_bib1","doi-asserted-by":"crossref","DOI":"10.1161\/CIRCEP.119.007392","article-title":"Differentiating right- and left-sided outflow tract ventricular arrhythmias: classical ECG signatures and prediction algorithms","volume":"12","author":"Anderson","year":"2019","journal-title":"Circ Arrhythm Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib2","doi-asserted-by":"crossref","first-page":"2603","DOI":"10.1111\/jce.14152","article-title":"Twelve-lead electrocardiographic localization of idiopathic premature ventricular contraction origins","volume":"30","author":"Yamada","year":"2019","journal-title":"J Cardiovasc Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib3","doi-asserted-by":"crossref","first-page":"366","DOI":"10.1016\/j.hrthm.2006.11.012","article-title":"Electrocardiographic recognition and ablation of outflow tract ventricular tachycardia","volume":"4","author":"Bala","year":"2007","journal-title":"Heart Rhythm"},{"key":"10.1016\/j.hrthm.2026.04.044_bib4","doi-asserted-by":"crossref","first-page":"908","DOI":"10.1111\/jce.13493","article-title":"An electrocardiographic diagnostic model for differentiating left from right ventricular outflow tract tachycardia origin","volume":"29","author":"He","year":"2018","journal-title":"J Cardiovasc Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib5","doi-asserted-by":"crossref","first-page":"747","DOI":"10.1111\/jce.12392","article-title":"A novel electrocardiographic criterion for differentiating a left from right ventricular outflow tract tachycardia origin: the V2S\/V3R index","volume":"25","author":"Yoshida","year":"2014","journal-title":"J Cardiovasc Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib6","doi-asserted-by":"crossref","first-page":"2255","DOI":"10.1016\/j.jacc.2011.01.035","article-title":"The V(2) transition ratio: a new electrocardiographic criterion for distinguishing left from right ventricular outflow tract tachycardia origin","volume":"57","author":"Betensky","year":"2011","journal-title":"J Am Coll Cardiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib7","doi-asserted-by":"crossref","first-page":"349","DOI":"10.1016\/j.hrthm.2010.11.023","article-title":"Novel transitional zone index allows more accurate differentiation between idiopathic right ventricular outflow tract and aortic sinus cusp ventricular arrhythmias","volume":"8","author":"Yoshida","year":"2011","journal-title":"Heart Rhythm"},{"key":"10.1016\/j.hrthm.2026.04.044_bib8","doi-asserted-by":"crossref","first-page":"1280","DOI":"10.1046\/j.1540-8167.2003.03211.x","article-title":"Development and validation of an ECG algorithm for identifying the optimal ablation site for idiopathic ventricular outflow tract tachycardia","volume":"14","author":"Ito","year":"2003","journal-title":"J Cardiovasc Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib9","doi-asserted-by":"crossref","first-page":"1268","DOI":"10.1016\/j.hrthm.2018.02.028","article-title":"How to map and ablate parahisian ventricular arrhythmias","volume":"15","author":"Enriquez","year":"2018","journal-title":"Heart Rhythm"},{"key":"10.1016\/j.hrthm.2026.04.044_bib10","doi-asserted-by":"crossref","first-page":"614","DOI":"10.1536\/ihj.23-054","article-title":"The R Wave amplitude in lead aVL could predict successful catheter ablation of ventricular arrhythmias originating below the His bundle region of the right ventricle","volume":"64","author":"Nodera","year":"2023","journal-title":"Int Heart J"},{"key":"10.1016\/j.hrthm.2026.04.044_bib11","doi-asserted-by":"crossref","first-page":"1338","DOI":"10.1093\/europace\/euab047","article-title":"Electrocardiographic recognition of benign and malignant right ventricular arrhythmias","volume":"23","author":"Lee","year":"2021","journal-title":"Europace"},{"key":"10.1016\/j.hrthm.2026.04.044_bib12","doi-asserted-by":"crossref","first-page":"719","DOI":"10.1016\/j.jacep.2020.10.012","article-title":"R\/S ratio in lead III predicts successful ablation of ventricular arrhythmias originating in para-hisian region","volume":"7","author":"Yue-Chun","year":"2021","journal-title":"JACC Clin Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib13","doi-asserted-by":"crossref","first-page":"e2","DOI":"10.1016\/j.hrthm.2019.03.002","article-title":"2019 HRS\/EHRA\/APHRS\/LAHRS expert consensus statement on catheter ablation of ventricular arrhythmias","volume":"17","author":"Cronin","year":"2020","journal-title":"Heart Rhythm"},{"key":"10.1016\/j.hrthm.2026.04.044_bib14","doi-asserted-by":"crossref","first-page":"1041","DOI":"10.1111\/j.1540-8167.2005.40787.x","article-title":"Electrocardiographic characteristics of repetitive monomorphic right ventricular tachycardia originating near the His-bundle","volume":"16","author":"Yamauchi","year":"2005","journal-title":"J Cardiovasc Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib15","doi-asserted-by":"crossref","first-page":"1626","DOI":"10.1016\/j.hrthm.2018.05.021","article-title":"Safety and efficacy of catheter ablation of ventricular arrhythmias with para-Hisian origin via a systematic direct approach from the aortic sinus cusp","volume":"15","author":"Wei","year":"2018","journal-title":"Heart Rhythm"},{"key":"10.1016\/j.hrthm.2026.04.044_bib16","doi-asserted-by":"crossref","first-page":"1778","DOI":"10.1093\/europace\/eus160","article-title":"Two distinct electrocardiographic forms of idiopathic ventricular arrhythmia originating in the vicinity of the His bundle","volume":"14","author":"Komatsu","year":"2012","journal-title":"Europace"},{"key":"10.1016\/j.hrthm.2026.04.044_bib17","doi-asserted-by":"crossref","first-page":"878","DOI":"10.1111\/j.1540-8167.2011.02014.x","article-title":"Catheter ablation of ventricular arrhythmias arising from the right ventricular septum close to the His bundle: features of the local electrogram at the optimal ablation site","volume":"22","author":"Komatsu","year":"2011","journal-title":"J Cardiovasc Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib18","doi-asserted-by":"crossref","first-page":"366","DOI":"10.1016\/j.jacep.2017.12.013","article-title":"Safety and efficacy of cryoablation in patients with ventricular arrhythmias originating from the para-Hisian region","volume":"4","author":"Miyamoto","year":"2018","journal-title":"JACC Clin Electrophysiol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib19","first-page":"172","article-title":"M\u00e9todo r\u00e1pido para determinar el eje card\u00edaco con D1 y D3","volume":"6","author":"Parrales L\u00f3pez","year":"2023","journal-title":"Alerta Rev Cient Inst Nac Salud"},{"key":"10.1016\/j.hrthm.2026.04.044_bib20","first-page":"212","article-title":"Simplified calculation of mean QRS vector (mean electrical axis of heart) of electrocardiogram","volume":"47","author":"Singh","year":"2003","journal-title":"Indian J Physiol Pharmacol"},{"key":"10.1016\/j.hrthm.2026.04.044_bib21","doi-asserted-by":"crossref","first-page":"1179","DOI":"10.1111\/jce.13287","article-title":"Inferior lead discordance in ventricular arrhythmias: a specific marker for certain arrhythmia locations","volume":"28","author":"Enriquez","year":"2017","journal-title":"J Cardiovasc Electrophysiol"}],"container-title":["Heart Rhythm"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1547527126023118?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1547527126023118?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T08:35:27Z","timestamp":1787733327000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S1547527126023118"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9]]},"references-count":21,"journal-issue":{"issue":"9","published-print":{"date-parts":[[2026,9]]}},"alternative-id":["S1547527126023118"],"URL":"https:\/\/doi.org\/10.1016\/j.hrthm.2026.04.044","relation":{},"ISSN":["1547-5271"],"issn-type":[{"value":"1547-5271","type":"print"}],"subject":[],"published":{"date-parts":[[2026,9]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Baseline QRS axis distinguishes para-Hisian PVC from outflow tract PVCs","name":"articletitle","label":"Article Title"},{"value":"Heart Rhythm","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.hrthm.2026.04.044","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2026 Heart Rhythm Society.","name":"copyright","label":"Copyright"}]}}