Category: ECG / Electrophysiology

P mitrale is the wide and notched P wave of left atrial overload (left atrial abnormality), typically seen in lead II in mitral stenosis.

Cardiac resynchronization therapy (CRT) is biventricular pacing in which one lead paces the right ventricle endocardially, another the left ventricle epicardially through a coronary vein and a third

Belhassen's VT is a fast rhythm originating from the left ventricle. VT is short for ventricular tachycardia. It is named after the person who described it as a

ECG shows inverted P waves in inferior leads, indicating that atrial activation is spreading from below upwards, suggestive of focus in low atrium / high junction.

Commonest arrhythmia in the transplanted heart is typical cavotricuspid atrial flutter. Atrial fibrillation is uncommon due to either pulmonary vein isolation or denervation.

Epicardial fat makes it difficult to ablate epicardial accessory pathways by epicardial route as the fat in the AV groove prevents ablation energy from reaching the pathways at

Electrocardiographic measures of ventricular repolarization include QT dispersion, T wave width, spatial QRS-T angle and T peak to T end interval.

Ventriculophasic sinus arrhythmia, also known as ventriculophasic response, is the shortening of a PP interval which encloses a QRS complex.

Four criteria for diagnosis of complete heart block on the ECG are constant RR interval, constant PP interval, varying PR interval and PP interval shorter than RR interval.

Pulmonary vein isolation is electrical isolation of pulmonary veins from left atrium so that pulmonary vein tachycardia cannot reach LA and cause AF.