{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T10:57:18Z","timestamp":1779879438236,"version":"3.53.1"},"reference-count":33,"publisher":"Elsevier BV","issue":"8","license":[{"start":{"date-parts":[[2024,8,1]],"date-time":"2024-08-01T00:00:00Z","timestamp":1722470400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2024,8,1]],"date-time":"2024-08-01T00:00:00Z","timestamp":1722470400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2025,8,1]],"date-time":"2025-08-01T00:00:00Z","timestamp":1754006400000},"content-version":"vor","delay-in-days":365,"URL":"http:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","jacc.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["JACC: Clinical Electrophysiology"],"published-print":{"date-parts":[[2024,8]]},"DOI":"10.1016\/j.jacep.2024.04.004","type":"journal-article","created":{"date-parts":[[2024,6,12]],"date-time":"2024-06-12T20:27:17Z","timestamp":1718224037000},"page":"1885-1895","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":5,"title":["Retrograde Conduction in Left Bundle Branch Block"],"prefix":"10.1016","volume":"10","author":[{"given":"Shunmuga Sundaram","family":"Ponnusamy","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1201-259X","authenticated-orcid":false,"given":"William","family":"Basil","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vithiya","family":"Ganesan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thabish","family":"Syed","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vadivelu","family":"Ramalingam","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Selvaganesh","family":"Mariappan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vijesh","family":"Anand","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Senthil","family":"Murugan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahesh","family":"Kumar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2230-100X","authenticated-orcid":false,"given":"Pugazhendhi","family":"Vijayaraman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.jacep.2024.04.004_bib1","doi-asserted-by":"crossref","first-page":"1539","DOI":"10.1056\/NEJMoa050496","article-title":"for the Cardiac Resynchronization Heart\u00a0Failure (CARE-HF) Study Investigators. The effect of cardiac resynchronization on morbidity and mortality in heart failure","volume":"352","author":"Cleland","year":"2005","journal-title":"N\u00a0Engl J Med"},{"issue":"3","key":"10.1016\/j.jacep.2024.04.004_bib2","doi-asserted-by":"crossref","first-page":"228","DOI":"10.1016\/j.jacc.2023.05.006","article-title":"Comparison of left bundle branch area pacing and biventricular pacing in candidates for resynchronization therapy","volume":"82","author":"Vijayaraman","year":"2023","journal-title":"J\u00a0Am Coll Cardiol"},{"issue":"9","key":"10.1016\/j.jacep.2024.04.004_bib3","doi-asserted-by":"crossref","DOI":"10.1161\/CIRCEP.122.011761","article-title":"Electrical resynchronization and clinical outcomes during long-term follow-up in intraventricular conduction delay patients applied left bundle branch pacing-optimized cardiac resynchronization therapy","volume":"16","author":"Chen","year":"2023","journal-title":"Circ Arrhythm Electrophysiol"},{"issue":"13","key":"10.1016\/j.jacep.2024.04.004_bib4","doi-asserted-by":"crossref","first-page":"1205","DOI":"10.1016\/j.jacc.2022.07.019","article-title":"Randomized trial of left bundle branch vs biventricular pacing for cardiac resynchronization therapy","volume":"80","author":"Wang","year":"2022","journal-title":"J\u00a0Am Coll Cardiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib5","doi-asserted-by":"crossref","first-page":"1876","DOI":"10.1161\/CIRCULATIONAHA.118.038648","article-title":"Intracardiac delineation of septal conduction in left bundle branch block patterns","volume":"139","author":"Upadhyay","year":"2019","journal-title":"Circulation"},{"issue":"9","key":"10.1016\/j.jacep.2024.04.004_bib6","doi-asserted-by":"crossref","first-page":"1133","DOI":"10.1161\/01.CIR.0000118502.91105.F6","article-title":"Characterization of left ventricular activation in patients with heart failure and left bundle branch block","volume":"109","author":"Aurichhio","year":"2004","journal-title":"Circulation"},{"issue":"7","key":"10.1016\/j.jacep.2024.04.004_bib7","doi-asserted-by":"crossref","first-page":"706","DOI":"10.1136\/hrt.38.7.706","article-title":"Retrograde conduction in complete atrioventricular block Study using His bundle recordings","volume":"38","author":"Touboul","year":"1976","journal-title":"Br Heart J"},{"issue":"3","key":"10.1016\/j.jacep.2024.04.004_bib8","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1016\/j.hrcr.2023.12.005","article-title":"Right bundle branch activation during left\u00a0bundle branch pacing: marginal gains in left bundle branch pacing-optimized cardiac resynchronization itherapy and the effects of atrio-ventricular delay dynamic optimization","volume":"10","author":"Tay","year":"2023","journal-title":"HeartRhythm Case Rep"},{"issue":"11","key":"10.1016\/j.jacep.2024.04.004_bib9","doi-asserted-by":"crossref","first-page":"850","DOI":"10.1016\/j.hrcr.2020.08.010","article-title":"Left bundle branch pacing guided by premature ventricular complexes during implant","volume":"6","author":"Ponnusamy","year":"2020","journal-title":"HeartRhythm Case Rep"},{"issue":"4","key":"10.1016\/j.jacep.2024.04.004_bib10","doi-asserted-by":"crossref","DOI":"10.1161\/CIRCEP.120.009677","article-title":"Template beat: a novel marker for left bundle branch capture during physiological pacing","volume":"14","author":"Ponnusamy","year":"2021","journal-title":"Circ Arrhythm Electrophysiol"},{"issue":"4","key":"10.1016\/j.jacep.2024.04.004_bib11","doi-asserted-by":"crossref","first-page":"562","DOI":"10.1016\/j.hrthm.2020.12.019","article-title":"Fixation beats: a novel marker for reaching the left bundle branch area during deep septal lead implantation","volume":"18","author":"Jastrzebski","year":"2021","journal-title":"Heart Rhythm"},{"key":"10.1016\/j.jacep.2024.04.004_bib12","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1016\/j.ccep.2021.12.011","article-title":"Evaluation of criteria for left-bundle-branch capture","volume":"14","author":"Ponnusamy","year":"2022","journal-title":"Card Electrophysiol Clin"},{"key":"10.1016\/j.jacep.2024.04.004_bib13","doi-asserted-by":"crossref","first-page":"927","DOI":"10.1016\/j.amjcard.2010.11.010","article-title":"Defining left bundle branch block in the era of cardiac resynchronization therapy","volume":"107","author":"Strauss","year":"2011","journal-title":"Am J Cardiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib14","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1016\/S0167-5273(99)00077-7","article-title":"Intraventricular conduction delay: a prognostic marker in chronic heart failure","volume":"70","author":"Shamim","year":"1999","journal-title":"Int J Cardiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib15","doi-asserted-by":"crossref","first-page":"398","DOI":"10.1067\/mhj.2002.121264","article-title":"Left bundle branch block is associated with increased 1-year sudden and total mortality rate in 5517 outpatients with congestive heart failure: a report from the Italian network on congestive heart failure","volume":"143","author":"Baldasseroni","year":"2002","journal-title":"Am Heart J"},{"key":"10.1016\/j.jacep.2024.04.004_bib16","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1016\/S0735-1097(02)01932-0","article-title":"Long-term benefits of biventricular pacing in congestive heart failure: results from the Multisite Stimulation in Cardiomyopathy (MUSTIC) study","volume":"40","author":"Linde","year":"2002","journal-title":"J\u00a0Am Coll Cardiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib17","doi-asserted-by":"crossref","first-page":"2026","DOI":"10.1016\/S0735-1097(02)01895-8","article-title":"Longterm clinical effect of hemodynamically optimized cardiac resynchronization therapy in patients with heart failure and ventricular conduction delay","volume":"39","author":"Auricchio","year":"2002","journal-title":"J\u00a0Am Coll Cardiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib18","doi-asserted-by":"crossref","first-page":"1454","DOI":"10.1016\/S0735-1097(03)01042-8","article-title":"Cardiac resynchronization therapy for the treatment of heart failure in patients with intraventricular conduction delay and malignant ventricular tachyarrhythmias","volume":"42","author":"Higgins","year":"2003","journal-title":"J\u00a0Am Coll Cardiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib19","doi-asserted-by":"crossref","first-page":"521","DOI":"10.1253\/circj.CJ-10-1268","article-title":"Non-responders to cardiac resynchronization therapy: the magnitude of the problem and the issues","volume":"75","author":"Auricchio","year":"2011","journal-title":"Circ J"},{"key":"10.1016\/j.jacep.2024.04.004_bib20","doi-asserted-by":"crossref","first-page":"2407","DOI":"10.1161\/CIRCULATIONAHA.112.000112","article-title":"Cardiac resynchronization therapy: state-of-the-art of current applications, guidelines, ongoing trials, and areas of controversy","volume":"128","author":"Prinzen","year":"2013","journal-title":"Circulation"},{"key":"10.1016\/j.jacep.2024.04.004_bib21","doi-asserted-by":"crossref","first-page":"765","DOI":"10.1016\/j.jacc.2008.11.024","article-title":"Insights from a cardiac resynchronization optimization clinic as part of a heart failure disease management program","volume":"53","author":"Mullens","year":"2009","journal-title":"J\u00a0Am Coll Cardiol"},{"issue":"2","key":"10.1016\/j.jacep.2024.04.004_bib22","doi-asserted-by":"crossref","first-page":"135","DOI":"10.1016\/j.jacep.2020.08.015","article-title":"Left bundle branch area pacing for cardiac resynchronization therapy: results from international LBBAP collaborative study group","volume":"7","author":"Vijayaraman","year":"2021","journal-title":"JACC Clin Electrophysiol"},{"issue":"9","key":"10.1016\/j.jacep.2024.04.004_bib23","doi-asserted-by":"crossref","first-page":"1155","DOI":"10.1016\/j.jacep.2021.02.004","article-title":"Left bundle branch induced cardiomyopathy: Insights from left bundle branch pacing","volume":"7","author":"Ponnusamy","year":"2021","journal-title":"JACC Clin Electrophysiol"},{"issue":"8","key":"10.1016\/j.jacep.2024.04.004_bib24","doi-asserted-by":"crossref","first-page":"1119","DOI":"10.1016\/j.hrthm.2023.05.019","article-title":"Magnetic resonance imaging based dual lead cardiac resynchronization therapy: a prospective left bundle branch pacing study (MADURAI LBBP study)","volume":"20","author":"Ponnusamy","year":"2023","journal-title":"Heart Rhythm"},{"issue":"12","key":"10.1016\/j.jacep.2024.04.004_bib25","doi-asserted-by":"crossref","first-page":"1987","DOI":"10.1111\/pace.14382","article-title":"Characteristics and proposed mechanisms of QRS morphology observed during the left bundle branch pacing procedure","volume":"44","author":"Shimeno","year":"2021","journal-title":"Pacing Clin Electrophysiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib26","doi-asserted-by":"crossref","first-page":"1166","DOI":"10.1016\/j.jacep.2021.02.018","article-title":"Evaluation of the criteria to distinguish left bundle branch pacing from left ventricular septal pacing","volume":"7","author":"Wu","year":"2021","journal-title":"JACC Clin Electrophysiol"},{"issue":"5","key":"10.1016\/j.jacep.2024.04.004_bib27","doi-asserted-by":"crossref","first-page":"635","DOI":"10.1016\/j.jacep.2022.01.012","article-title":"Influence of capture selectivity and left intrahisian block on QRS characteristics during left bundle branch pacing","volume":"8","author":"Sun","year":"2022","journal-title":"JACC Clin Electrophysiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib28","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1111\/pace.13264","article-title":"New-onset left bundle branch block associated idiopathic nonischemic cardiomyopathy and time from diagnosis to cardiac resynchronization therapy: the NEOLITH II study","volume":"41","author":"Wang","year":"2018","journal-title":"Pacing Clin Electrophysiol"},{"issue":"5","key":"10.1016\/j.jacep.2024.04.004_bib29","doi-asserted-by":"crossref","first-page":"292","DOI":"10.1002\/clc.22658","article-title":"Predictors and long-term outcome of super-responders to cardiac resynchronization therapy","volume":"40","author":"Ghani","year":"2017","journal-title":"Clin Cardiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib30","series-title":"Clinical Cardiac Electrophysiology: Techniques and Interpretations","article-title":"Electrophysiologic investigation: general concepts","author":"Josephson","year":"2008"},{"key":"10.1016\/j.jacep.2024.04.004_bib31","doi-asserted-by":"crossref","first-page":"1050","DOI":"10.1111\/j.1540-8159.1986.tb06669.x","article-title":"The\u00a0dynamic nature of ventriculoatrial conduction","volume":"9","author":"Klementowicz","year":"1986","journal-title":"Pacing Clin Electrophysiol"},{"key":"10.1016\/j.jacep.2024.04.004_bib32","series-title":"The Conduction System of the Heart","first-page":"485","article-title":"Patterns of V-A conduction in the human heart in the presence of normal and abnormal A-V conduction","author":"Schuilenburg","year":"1976"},{"issue":"5","key":"10.1016\/j.jacep.2024.04.004_bib33","doi-asserted-by":"crossref","first-page":"608","DOI":"10.1016\/0002-8703(79)90188-1","article-title":"Unidirectional complete heart block","volume":"97","author":"Khalilullah","year":"1979","journal-title":"Am Heart J"}],"container-title":["JACC: Clinical Electrophysiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2405500X24002755?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2405500X24002755?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,8,1]],"date-time":"2025-08-01T03:32:04Z","timestamp":1754019124000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S2405500X24002755"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,8]]},"references-count":33,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2024,8]]}},"alternative-id":["S2405500X24002755"],"URL":"https:\/\/doi.org\/10.1016\/j.jacep.2024.04.004","relation":{},"ISSN":["2405-500X"],"issn-type":[{"value":"2405-500X","type":"print"}],"subject":[],"published":{"date-parts":[[2024,8]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Retrograde Conduction in Left Bundle Branch Block","name":"articletitle","label":"Article Title"},{"value":"JACC: Clinical Electrophysiology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.jacep.2024.04.004","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2024 by the American College of Cardiology Foundation. Published by Elsevier.","name":"copyright","label":"Copyright"}]}}