Electro‐vectorcardiographic demonstration of rate‐independent transient left posterior fascicular block

Electro‐vectorcardiographic demonstration of rate‐independent transient left posterior fascicular block

Left posterior fascicular block (LPFB) is a rare intraventricular conduction disorder of rare occurrence, especially as an isolated entity. Its transient form is even rarer and maybe rate‐independent or rate‐dependent intermittent LPFB (phase 3 block, tachycardia‐dependent and phase 4 block or brady...

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Published in:Annals of noninvasive electrocardiology Vol. 24; no. 5; pp. e12600 - n/a
Main Authors: Pérez‐Riera, Andrés Ricardo, Barbosa‐Barros, Raimundo, Sá Leitão Ramos Borges, Maria Tereza, Daminello‐Raimundo, Rodrigo, de Abreu, Luiz Carlos, Nikus, Kjell
Format: Journal Article
Language:English
Published: United States John Wiley & Sons, Inc 01-09-2019
John Wiley and Sons Inc
Subjects:
Adult
Bradycardia
Cardiovascular disease
Cardiovascular diseases
Case Report
Case Reports
Conduction
Coronary artery disease
Echocardiography
EKG
Electrocardiography
Exercise Test
Heart Block - diagnosis
Heart diseases
Humans
isolated left posterior fascicular block
Magnetic Resonance Imaging
Male
rate‐independent intermittent left posterior fascicular block
Tachycardia
transient left posterior fascicular block
Treadmills
Vectorcardiography - methods
Young adults
rate-independent intermittent left posterior fascicular block
transient left posterior fascicular block
isolated left posterior fascicular block
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Summary:Left posterior fascicular block (LPFB) is a rare intraventricular conduction disorder of rare occurrence, especially as an isolated entity. Its transient form is even rarer and maybe rate‐independent or rate‐dependent intermittent LPFB (phase 3 block, tachycardia‐dependent and phase 4 block or bradycardia‐dependent). We present a case of a young adult male whose baseline ECG/VCG showed the typical LPFB pattern. A treadmill stress test revealed rate‐independent intermittent LPFB with random occurrence. Imaging exams ruled out structural heart disease. To our knowledge, this is the first case in the literature of a rate‐independent intermittent LPFB with no underlying structural heart disease.
Bibliography:ObjectType-Case Study-2
SourceType-Scholarly Journals-1
ObjectType-Feature-4
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ObjectType-Report-1
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ISSN:1082-720X
1542-474X
DOI:10.1111/anec.12600