Unusual Conduction Disorder: Left Posterior Fascicular Block + Left Septal Fascicular Block

Pérez‐Riera, Andrés Ricardo; Baranchuk, Adrián

doi:10.1111/anec.12185

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…ECG2 presents all the electrocardiographic criteria for LSFB, repeatedly mentioned in the literature (Pérez‐Riera & Baranchuk, ; Perez‐Riera, Barbosa‐Barros, Penachini da Costa de Rezende Barbosa, Daminello‐Raimundo, & de Abreu, ), and ratified by the III SBC (Sociedade Brasileira de Cardiologia) Guidelines on the Analysis and Issuance of Electrocardiographic Reports—Executive Summary by Pastore et al. (Pastore, Samesima, & Pereira‐Filho, ).…”

Section: Discussionmentioning

confidence: 99%

Transient left septal fascicular block and left anterior fascicular block as a consequence of proximal subocclusion of the left anterior descending coronary artery

Pérez‐Riera

Barbosa‐Barros

Daminello‐Raimundo

et al. 2018

Noninvasive Electrocardiol

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The association of left anterior fascicular block (LAFB) with left septal fascicular block (LSFB) characterizes a left bifascicular block subtype rarely described in the literature, probably due to the fact that most researchers are not aware of the existence of the left septal fascicle. We describe a case with this transient intraventricular dromotropic disturbance due to left anterior descending coronary artery subocclusion.

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Section: Discussionmentioning

confidence: 99%

Transient left septal fascicular block and left anterior fascicular block as a consequence of proximal subocclusion of the left anterior descending coronary artery

Pérez‐Riera

Barbosa‐Barros

Daminello‐Raimundo

et al. 2018

Noninvasive Electrocardiol

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“…The combination of LSFB + LAFB should be considered a bifascicular block (Fig. B) . The presence of high R wave amplitude in lead V 2 (>15 mm), in conjunction with the absence of initial q wave in the left precordial leads, is one of the hallmark representations of LSFB …”

Section: Discussionmentioning

confidence: 99%

Transient Left Septal Fascicular Block: An Electrocardiographic Expression of Proximal Obstruction of Left Anterior Descending Artery?

Pérez‐Riera

Nadeau-Routhier

Barbosa‐Barros

et al. 2015

Noninvasive Electrocardiol

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“…It is formed of many fine strands coursing anteriorly to the free wall [56][57][58]; thus, this segment is most likely to support the LVS region. However, both networks from anterior and posterior divisions of the left bundle branch are widely interconnected [59,60]. Another argument for anterior division distribution in the LVS region is the possibility of mapping and ablating the left anterior fascicle from the right aortic sinus [61].…”

Section: Lvs Nourishment and Innervationmentioning

confidence: 99%

Left ventricular summit -- concept, anatomical description and clinical significance

Kuniewicz

Baszko

Hołda

et al. 2021

Preprint

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The left ventricular summit (LVS) is a triangular area located at the most superior portion of the left epicardial ventricular region, surrounded by the two branches of the left coronary artery: the left anterior interventricular artery and the left circumflex artery. The triangle is bounded by the apex, septal and mitral margins and base. This review aims to provide a systematic and comprehensive anatomical description and proper terminology in the LVS region that may facilitate exchanging information among anatomists and electrophysiologists, increasing knowledge of this cardiac region. We postulate that the most dominant septal perforator (not the first septal perforator) should characterize the LVS definition. Abundant epicardial adipose tissue overlying the LVS myocardium may affect arrhythmogenic processes and electrophysiological procedures within the LVS region. The LVS is divided into two clinically significant regions: accessible and inaccessible areas. Rich arterial and venous coronary vasculature and a relatively dense network of cardiac autonomic nerve fibers are present within the LVS boundaries. Although the approach to the LVS may be challenging, it can be executed indirectly using the surrounding structures. Delivery of the proper radiofrequency energy to the arrhythmia source, avoiding coronary artery damage at the same time, may be a challenge. Therefore, coronary angiography or cardiac computed tomography imaging is strongly recommended before any procedure within the LVS region. Further research on LVS morphology and physiology should increase the safety and effectiveness of invasive electrophysiological procedures performed within this region of the human heart. Published in Diagnostics: https://doi.org/10.3390/diagnostics11081423

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Unusual Conduction Disorder: Left Posterior Fascicular Block + Left Septal Fascicular Block

Abstract: A 44-year-old man with aortic valve insufficiency and stenosis underwent aortic valve replacement depicting interesting ECG changes. This unique case is discussed, contributing to the understanding of a trifascicular left intraventricular conduction system.

Cited by 8 publications

References 3 publications

Transient left septal fascicular block and left anterior fascicular block as a consequence of proximal subocclusion of the left anterior descending coronary artery

Transient left septal fascicular block and left anterior fascicular block as a consequence of proximal subocclusion of the left anterior descending coronary artery

Transient Left Septal Fascicular Block: An Electrocardiographic Expression of Proximal Obstruction of Left Anterior Descending Artery?

Left ventricular summit -- concept, anatomical description and clinical significance

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