Open AccessTransient 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 , j wave , ventricular tachycardia , electrocardiography , acute coronary syndrome , 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 ).