{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,21]],"date-time":"2025-09-21T08:47:43Z","timestamp":1758444463056,"version":"3.44.0"},"reference-count":6,"publisher":"BMJ","issue":"18","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["Heart"],"accepted":{"date-parts":[[2018,5,17]]},"published-print":{"date-parts":[[2018,9]]},"abstract":"<jats:sec id=\"s1\">\n                  <jats:title>Clinical\u00a0introduction<\/jats:title>\n                  <jats:p>A 78-year-old man presents following a syncopal episode in the setting of intermittent sinus bradycardia and left bundle branch block (LBBB). With symptoms likely due to documented intermittent sinus node dysfunction, and finding of a diseased left bundle, a pacemaker was inserted\u00a0(online supplementary figure 1 shows the electrode position in a PA fluroscopy view). His baseline ECG is shown in figure 1A, with a QRS width of 160\u00a0ms, and his echocardiogram revealed a left ventricular ejection fraction of 45%. His ECG day 1 postdevice insertion\u00a0is shown in figure 1B. His device check confirmed excellent function. His QRS width on ECG postdevice insertion is now normalised to 80\u00a0ms.<\/jats:p>\n                  <jats:supplementary-material id=\"SP1\" position=\"float\" orientation=\"portrait\">\n                     <jats:label>Supplementary file 1<\/jats:label>\n                     <jats:p>\n                        <jats:inline-supplementary-material xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" id=\"ss1\" xlink:href=\"SP1.jpg\" mimetype=\"image\" mime-subtype=\"jpeg\"\/>\n                     <\/jats:p>\n                  <\/jats:supplementary-material>\n               <\/jats:sec>\n               <jats:sec id=\"s2\">\n                  <jats:title>Question<\/jats:title>\n                  <jats:p>What type of device therapy has this patient received?<jats:list list-type=\"alpha-upper\">\n                        <jats:list-item>\n                           <jats:p>Biventricular pacing.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                           <jats:p>Right ventricular outflow septal pacing.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                           <jats:p>His\u00a0bundle pacing.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                           <jats:p>Right ventricular apical pacing.<\/jats:p>\n                        <\/jats:list-item>\n                     <\/jats:list>\n                  <\/jats:p>\n                  <jats:fig id=\"F1\" position=\"float\" orientation=\"portrait\">\n                     <jats:label>Figure 1<\/jats:label>\n                     <jats:caption>\n                        <jats:p>(A) Baseline ECG and (B) day 1\u00a0postpacemaker implantation.<\/jats:p>\n                     <\/jats:caption>\n                     <jats:graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"heartjnl-2018-313392f1\" position=\"float\" orientation=\"portrait\"\/>\n                  <\/jats:fig>\n               <\/jats:sec>","DOI":"10.1136\/heartjnl-2018-313392","type":"journal-article","created":{"date-parts":[[2018,6,28]],"date-time":"2018-06-28T12:25:02Z","timestamp":1530188702000},"page":"1491-1528","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Pacing: a new look. Don\u2019t be deceived"],"prefix":"10.1136","volume":"104","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6225-284X","authenticated-orcid":false,"given":"Chee Loong","family":"Chow","sequence":"first","affiliation":[{"name":"Department of Cardiology, Northern Hospital, Epping, Victoria, Australia"},{"name":"Department of Medicine, University of Melbourne, Parkville, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Barveen","family":"Abu Baker","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Northern Hospital, Epping, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Uwais","family":"Mohamed","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Northern Hospital, Epping, Victoria, Australia"},{"name":"Department of Medicine, University of Melbourne, Parkville, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2018,6,28]]},"reference":[{"key":"2025091923571673000_104.18.1491.1","doi-asserted-by":"crossref","first-page":"1362","DOI":"10.1016\/j.hrthm.2016.03.040","article-title":"How to perform permanent His bundle pacing in routine clinical practice","volume":"13","author":"Dandamudi","year":"2016","journal-title":"Heart Rhythm"},{"key":"2025091923571673000_104.18.1491.2","doi-asserted-by":"publisher","DOI":"10.1016\/j.hrthm.2014.10.021"},{"key":"2025091923571673000_104.18.1491.3","doi-asserted-by":"publisher","DOI":"10.1001\/jama.288.24.3115"},{"key":"2025091923571673000_104.18.1491.4","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.0000072769.17295.B1"},{"key":"2025091923571673000_104.18.1491.5","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.57.3.473"},{"key":"2025091923571673000_104.18.1491.6","doi-asserted-by":"crossref","first-page":"1990","DOI":"10.1016\/j.amjcard.2017.08.003","article-title":"Comparison of incidence of left ventricular systolic dysfunction among patients with left bundle branch block versus those with normal QRS duration","volume":"120","author":"Sze","year":"2017","journal-title":"Am J Cardiol"}],"container-title":["Heart"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/heartjnl-2018-313392","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,9,20]],"date-time":"2025-09-20T06:57:22Z","timestamp":1758351442000},"score":1,"resource":{"primary":{"URL":"https:\/\/heart.bmj.com\/lookup\/doi\/10.1136\/heartjnl-2018-313392"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,6,28]]},"references-count":6,"journal-issue":{"issue":"18","published-online":{"date-parts":[[2018,9,12]]},"published-print":{"date-parts":[[2018,9]]}},"alternative-id":["10.1136\/heartjnl-2018-313392"],"URL":"https:\/\/doi.org\/10.1136\/heartjnl-2018-313392","relation":{},"ISSN":["1355-6037","1468-201X"],"issn-type":[{"type":"print","value":"1355-6037"},{"type":"electronic","value":"1468-201X"}],"subject":[],"published":{"date-parts":[[2018,6,28]]}}}