Sudden QRS morphology change during ventricular pacing in a scar-related isthmus What is the mechanism?

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Sudden QRS morphology change during ventricular pacing in a scar-related isthmus What is the mechanism?

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作者：Philippe Maury ; MD^a ; ^{mauryjphil@hotmail.com" class="auth_mail" title="E-mail the corresponding author} ; Anne Rollin ; MD^a ; Jean-Marc Sellal ; MD^b ; Alexandre Duparc ; MD^a ; Pierre Mondoly ; MD^a ; Christelle Cardin ; MD^a ; Christian De Chillou ; MD ; PhD^b
关键词：Isthmus ; Reentry circuit ; Ventricular tachycardia ; Pace-mapping ; Entrainment
刊名：Journal of Electrocardiology
出版年：2016
出版时间：November-December 2016
年：2016
卷：49
期：6
页码：973-976
全文大小：892 K

文摘

•: Phenomenon of sudden QRS morphology change during ventricular pacing in a scar-related isthmus.
•: Abrupt bidirectional block inside the isthmus.
•: Newly overt antidromic conduction previously concealed due to collision with the orthodromic wavefront coming from the previous beat.

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