Transient left septal fascicular block in the setting of acute coronary syndrome associated with giant slurring variant J‐wave | Zendy

PérezRiera Andrés Ricardo | Zendy; BarbosaBarros Raimundo | Zendy; Lima Aragão Wallam | Zendy; DaminelloRaimundo Rodrigo | Zendy; Abreu Luiz Carlos | Zendy; Tonussi Mendes Rossette do Valle Joseane Elza | Zendy; Esposito Sorpreso Isabel Cristina | Zendy; Nikus Kjell | Zendy

Open Access

Transient left septal fascicular block in the setting of acute coronary syndrome associated with giant slurring variant J‐wave

Author(s) -

PérezRiera Andrés Ricardo,

BarbosaBarros Raimundo,

Lima Aragão Wallam,

DaminelloRaimundo Rodrigo,

Abreu Luiz Carlos,

Tonussi Mendes Rossette do Valle Joseane Elza,

Esposito Sorpreso Isabel Cristina,

Nikus Kjell

Publication year - 2018

Publication title -

annals of noninvasive electrocardiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.494

H-Index - 48

eISSN - 1542-474X

pISSN - 1082-720X

DOI - 10.1111/anec.12536

Subject(s) - medicine , cardiology , qrs complex , ventricular fibrillation , ventricular tachycardia , j wave , acute coronary syndrome , electrocardiography , myocardial infarction

We report a case of acute coronary syndrome with transient prominent anterior QRS forces ( PAF ) caused by proximal subocclusion of the left anterior descending ( LAD ) coronary artery before the first septal perforator branch. The ECG change indicates left septal fascicular block ( LSFB ) with associated slurring‐type giant J‐wave. Currently, this J‐wave variant is considered as a lambda‐like wave or QRS ‐ ST ‐T “triangulation”. Its presence is indicative of poor prognosis because of the risk for cardiac arrest as a consequence of ventricular tachycardia/ventricular fibrillation ( VT / VF ).

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