Left Anterior Fascicular Block (LAFB)
In left anterior fascicular block (LAFB), impulses are conducted to the left ventricle via the posterior fascicle, producing characteristic ECG changes
Tag ECG Diagnosis
Left Posterior Fascicular Block (LPFB)
Left posterior fascicular block LPFB (left posterior hemiblock), impulses are conducted to the left ventricle via the left anterior fascicle
Right Ventricular Outflow Tract Tachycardia
A review of the ECG features of right ventricular outflow tract tachycardia (RVOT), a type of VT, with example ECGs.
Hypomagnesaemia
Isolated low serum Mg levels are associated with atrial depolarisation and ventricular repolarisation abnormalities, predisposing to ventricular arrhythmias
Aslanger Pattern: Another OMI?
Aslanger et al identified a specific ECG pattern concerning for acute inferior occlusion MI in patients with concomitant multi-vessel disease, that does not display contiguous ST-segment elevation or fulfil STEMI criteria
Trifascicular Block
Trifascicular block (TFB) refers to the presence of conducting disease in all three fascicles: RBBB, LAFB, LPFB. LITFL ECG Library
Left Bundle Branch Block (LBBB)
Left Bundle Branch Block LBBB - normal direction of septal depolarisation is reversed (becomes right to left), as the impulse spreads
Spodick sign
Spodick Sign: Stage I Pericarditis, a downsloping of the TP line. Described 1974 by American Cardiologist, David H Spodick (1927 – 2019)
Right Bundle Branch Block (RBBB)
Right Bundle Branch Block (RBBB) activation of the right ventricle is delayed as depolarisation spreads across septum from left ventricle.
Inappropriate Sinus Tachycardia (IST)
Also known as primary sinus tachycardia, inappropriate sinus tachycardia (IST) is a generally benign condition that has a prevalence of ~1% in the general population
Bifascicular Block
Bifascicular block is the combination of RBBB with either LAFB or LPFB. Conduction to the ventricles is via the single remaining fascicle.
First Degree Heart Block
Defined as PR interval > 200ms, commonly caused by AV nodal blocking drugs