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After oxygenation withdrawal became feasible following intravenous antiarrhythmics, tachycardia recurred with oral transition. Subsequent ivabradine administration resulted in heart rate control and improved cardiac function. We emphasise the role of ivabradine in heart rate control and cardiac function stabilisation in junctional ectopic tachycardia.<\/jats:p>","DOI":"10.1017\/s1047951126113948","type":"journal-article","created":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T09:01:21Z","timestamp":1783587681000},"page":"1501-1504","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":0,"title":["An infant with junctional ectopic tachycardia treated with a multidrug regimen including ivabradine"],"prefix":"10.1017","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-5647-2616","authenticated-orcid":false,"given":"Kazu","family":"Ishikawa","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/03fvwxc59","id-type":"ROR","asserted-by":"publisher"}],"name":"National Center for Child Health and Development"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susumu","family":"Urata","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/03fvwxc59","id-type":"ROR","asserted-by":"publisher"}],"name":"National Center for Child Health and Development"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ki-Sung","family":"Kim","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/03fvwxc59","id-type":"ROR","asserted-by":"publisher"}],"name":"National Center for Child Health and Development"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2026,7,9]]},"reference":[{"key":"S1047951126113948_ref13","doi-asserted-by":"publisher","DOI":"10.1002\/joa3.12282"},{"key":"S1047951126113948_ref4","doi-asserted-by":"publisher","DOI":"10.1111\/jce.12081"},{"key":"S1047951126113948_ref1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.81.5.1544"},{"key":"S1047951126113948_ref10","doi-asserted-by":"publisher","DOI":"10.1016\/j.hrthm.2016.03.015"},{"key":"S1047951126113948_ref14","doi-asserted-by":"publisher","DOI":"10.1161\/JAHA.115.001813"},{"key":"S1047951126113948_ref11","doi-asserted-by":"publisher","DOI":"10.3390\/pediatric13040074"},{"key":"S1047951126113948_ref7","doi-asserted-by":"publisher","DOI":"10.1111\/j.1476-5381.1996.tb15505.x"},{"key":"S1047951126113948_ref15","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.82.3.817"},{"key":"S1047951126113948_ref16","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2017.07.725"},{"key":"S1047951126113948_ref8","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejphar.2020.173818"},{"key":"S1047951126113948_ref9","doi-asserted-by":"crossref","first-page":"e040222200836","DOI":"10.2174\/1573403X18666220204142436","article-title":"Review: HCN Channels in the Heart","volume":"18","author":"Depuydt","year":"2022","journal-title":"Curr Cardiol Rev"},{"key":"S1047951126113948_ref2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2008.11.019"},{"key":"S1047951126113948_ref6","doi-asserted-by":"publisher","DOI":"10.1161\/01.RES.0000101913.95604.B9"},{"key":"S1047951126113948_ref3","doi-asserted-by":"publisher","DOI":"10.1017\/S1047951123003669"},{"key":"S1047951126113948_ref5","doi-asserted-by":"publisher","DOI":"10.4103\/apc.apc_35_21"},{"key":"S1047951126113948_ref12","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCRESAHA.109.208041"}],"container-title":["Cardiology in the Young"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S1047951126113948","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T01:46:23Z","timestamp":1790819183000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S1047951126113948\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,7]]},"references-count":16,"journal-issue":{"issue":"7","published-print":{"date-parts":[[2026,7]]}},"alternative-id":["S1047951126113948"],"URL":"https:\/\/doi.org\/10.1017\/s1047951126113948","relation":{},"ISSN":["1047-9511","1467-1107"],"issn-type":[{"value":"1047-9511","type":"print"},{"value":"1467-1107","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,7]]},"assertion":[{"value":"\u00a9 The Author(s), 2026. 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