Prognostic value of gated SPECT in patients with left bundle branch
Fragmented QRS complexes not typical of a bundle branch
block: a marker of greater myocardial perfusion tomography abnormalities in coronary artery disease.
Electrocardiographic signs of acute myocardial infarction in left bundle branch
Left bundle branch
block (LBBB) is an abnormality of cardiac conduction system which causes delayed activation of left ventricle leading to delayed left ventricular contraction compared to the right ventricle.
Our findings are corroborated by a systematic review and meta-analysis by Qaddoura et al, in which ECG signs that were good predictors of a negative outcome for in-hospital mortality included S1Q3T3 (OR: 3.38, 95% CI: 2.46-4.66, p<0.001), complete right bundle branch
block (OR: 3.90, 95% CI: 2.46-6.20, p<0.001), T-wave inversion (OR: 1.62, 95% CI: 1.19-2.21, p=0.002), right axis deviation (OR: 3.24, 95% CI: 1.86-5.64, p<0.001), and atrial fibrillation (OR: 1.96, 95% CI: 1.45-2.67, p<0.001)18.
Sgarbossa criteria  is used for electrocardiographic manifestations of ischaemia in the setting of left bundle branch
The resulting segments were divided into 18 different types of beats, namely, normal beat (NOR "N"), atrial premature contraction (APC "A"), fusion of ventricular and normal beat (FVN "F"), left bundle branch
block (LBBB "L"), unclassifiable beat (UN "Q"), premature ventricular contraction (PVC "V"), right bundle branch
block beat (RBBB "R"), ventricular flutter wave (VF "!"), atrial escape beat (AE "e"), fusion of paced and normal beat (FPN "f"), nodal (junctional) premature beat (NP "J"), isolated QRS-like artifact (-), aberrated atrial premature beat (AP "a"), ventricular escape beat (VE "E"), nodal (junctional) escape beat (NE "j"), nonconducted P-wave (blocked APB "x"), paced beat (PACE "/"), and supraventricular premature beat (SP "S").
ECG examination showed an incomplete right bundle branch
block (RBBB)-like pattern on V1-V2 (Figure 1).
Electrocardiogram showed right ventricle hypertrophy and right bundle branch
The syndrome was first reported in 1992 by Brugada and Brugada as a persistent ST segment elevation associated with right bundle branch
WPW is best known for its association with supraventricular tachycardias which are usually initiated by an atrial premature complex, but can be initiated by ventricular premature complexes.The ensuing atrioventricular reciprocating tachycardia has a reentrant circuit usually characterized by so-called orthdromic conduction down the atrioventricular node, His bundle, and bundle branches
, i.e., the normal conduction pathways, with conduction back to the atria via the accessory pathway, and the QRS complex is usually narrow unless the patient has a coexisting bundle branch