{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,20]],"date-time":"2025-09-20T08:33:06Z","timestamp":1758357186867,"version":"3.44.0"},"reference-count":7,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-017"},{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-012"},{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-004"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Journal of Electrocardiology"],"published-print":{"date-parts":[[2023,11]]},"DOI":"10.1016\/j.jelectrocard.2023.10.002","type":"journal-article","created":{"date-parts":[[2023,10,7]],"date-time":"2023-10-07T11:06:55Z","timestamp":1696676815000},"page":"214-217","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":0,"special_numbering":"C","title":["An alternating QRS: How does it go even though it's pretty slow?"],"prefix":"10.1016","volume":"81","author":[{"given":"Emily","family":"Ong","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Grubman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lynda E.","family":"Rosenfeld","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.jelectrocard.2023.10.002_bb0005","doi-asserted-by":"crossref","first-page":"2607","DOI":"10.1016\/j.jacc.2019.08.1064","article-title":"Incidence and risk factors for permanent pacemaker implantation following mitral or aortic valve surgery","volume":"74","author":"Moskowitz","year":"2019","journal-title":"J Am Coll Cardiol"},{"key":"10.1016\/j.jelectrocard.2023.10.002_bb0010","doi-asserted-by":"crossref","first-page":"676","DOI":"10.1001\/archinte.1981.00340050122029","article-title":"Radiotherapy as a cause of complete atrioventricular block in Hodgkin\u2019s disease","volume":"141","author":"Cohen","year":"1981","journal-title":"Arch Intern Med"},{"key":"10.1016\/j.jelectrocard.2023.10.002_bb0015","doi-asserted-by":"crossref","first-page":"1880","DOI":"10.1016\/S0003-4975(01)02588-7","article-title":"Valvular heart operation in patients with previous mediastinal radiation therapy","volume":"71","author":"Handa","year":"2001","journal-title":"Ann Thorac Surg"},{"key":"10.1016\/j.jelectrocard.2023.10.002_bb0020","doi-asserted-by":"crossref","first-page":"337","DOI":"10.1136\/hrt.31.3.337","article-title":"The supernormal phase of intraventricular conduction","volume":"31","author":"Schamroth","year":"1969","journal-title":"Brit Heart J"},{"key":"10.1016\/j.jelectrocard.2023.10.002_bb0025","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1111\/j.1540-8167.1994.tb01171.x","article-title":"Supernormal conduction in the left bundle branch","volume":"5","author":"Oreto","year":"1994","journal-title":"J Cardiovasc Electrophysiol"},{"key":"10.1016\/j.jelectrocard.2023.10.002_bb0030","doi-asserted-by":"crossref","first-page":"326","DOI":"10.1378\/chest.59.3.326","article-title":"Atrial flutter with 2:1 AV conduction and Mobitz type II-like block in the left bundle branch","volume":"59","author":"Maramba","year":"1971","journal-title":"Chest."},{"key":"10.1016\/j.jelectrocard.2023.10.002_bb0035","doi-asserted-by":"crossref","first-page":"38","DOI":"10.1016\/j.jelectrocard.2005.08.003","article-title":"Bundle branch block in alternate beats during 2:1 atrial flutter","volume":"39","author":"Luzza","year":"2006","journal-title":"J Electrocardiol"}],"container-title":["Journal of Electrocardiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0022073623002273?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0022073623002273?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,19]],"date-time":"2025-09-19T12:36:33Z","timestamp":1758285393000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0022073623002273"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,11]]},"references-count":7,"alternative-id":["S0022073623002273"],"URL":"https:\/\/doi.org\/10.1016\/j.jelectrocard.2023.10.002","relation":{},"ISSN":["0022-0736"],"issn-type":[{"type":"print","value":"0022-0736"}],"subject":[],"published":{"date-parts":[[2023,11]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"An alternating QRS: How does it go even though it's pretty slow?","name":"articletitle","label":"Article Title"},{"value":"Journal of Electrocardiology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.jelectrocard.2023.10.002","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2023 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}