Category: ECG / Electrophysiology

Familial WPW syndrome: About three percent of WPW syndrome can have a familial occurrence and one of the genes identified is PRKAG2.

CPVT in short for catecholaminergic polymorphic ventricular tachycardia is probably the most lethal of the cardiac channelopathies.

Long QT syndromes have a phenotype of delayed depolarization due to ion channel mutations, causing QT prolongation and risk of ventricular arrhythmias.

Important cardiac channelopathies are the long QT syndromes, Brugada syndrome, CPVT, short QT syndrome and congenital sick sinus syndrome.

Short QT syndrome is characterised by an abnormally short QT interval and a propensity to develop atrial and ventricular arrhythmias.

ECG recording illustrating ventricular ectopic bigeminy with alternating sinus and ventricular ectopic beats.

Description of the bedside method of determination of QRS axis.

ECG illustrating Pardee's sign on ECG in acute myocardial infarction.

Description and illustration of a normal ECG.

ECG showing Left ventricular hypertrophy (LVH) with strain pattern.