Intraventricular Conduction Delay (QRS widening)
Review of the different causes of Intraventricular conduction delay. QRS duration > 100 ms in the presence of a supraventricular rhythm.
Tag ECG Library
Supraventricular Tachycardia (SVT)
A review of the different types of supraventricular tachycardia (SVT), with a focus on AV-nodal re-entry tachycardia (AVNRT)
Idiopathic Fascicular Left Ventricular Tachycardia
ECG features of Idiopathic Fascicular Ventricular Tachycardia. AKA Belhassen-type VT, verapamil-sensitive VT or infrafascicular tachycardia.
ECG Findings in Massive Pericardial Effusion
Massive pericardial effusion produces a characteristic ECG triad of low QRS voltage, tachycardia, and electrical alternans. LITFL ECG Library
AV block: 2nd degree, “fixed ratio” blocks
A review of the ECG characteristics of "fixed ratio blocks", i.e. second degree AV block with 2:1 or 3:1 conduction ratios.
AV block: 2nd degree, “high-grade” AV block
Second degree heart block (2nd degree AV block) with a P:QRS ratio of 3:1 or higher, producing an extremely slow ventricular rate.
AV Block: 2nd degree, Mobitz II (Hay block)
A review of the ECG features of Mobitz II 2nd degree AV block - Originally termed Hay block (1906) by Mobitz in 1924. ECG Library LITFL
AV Block: 2nd degree, Mobitz I (Wenckebach Phenomenon)
A review of the basic ECG features, causes and pathophysiology of Mobitz I AV Block (Wenckebach Phenomenon) with some example ECGs.
Focal Atrial Tachycardia (FAT)
Atrial tachycardia is a form of supraventricular tachycardia, originating within the atria but outside of the sinus node
Premature Atrial Complex (PAC)
Review of the atrial ectopics and premature atrial contractions (PACs) with ectopic pacemaking tissue within the atria
Arrhythmogenic Right Ventricular Dysplasia (ARVD)
A review of the ECG features of arrhythmogenic right ventricular cardiomyopathy (ARVC) AKA: arrhythmogenic right ventricular dysplasia (ARVD)
Anterior Myocardial Infarction
Anterior STEMI usually results from occlusion of the left anterior descending (LAD) artery and carries the poorest prognosis of all infarct territories