Category Archives: ECG

Wide QRS tachycardia on Holter Strip reproduced from a twenty four hour Holter monitoring record. Holter monitoring is used to elucidate intermittent arrhythmias like this which may not [..]

Right atrial infarction is more common than left atrial infarction, possibly because of the higher oxygen concentration in the left atrial blood. Infarction is more common in the [..]

Lewis lead is useful for recognition of P wave during wide QRS tachycardia when the P waves are usually obscured by the QRS complex or T wave. While [..]

Ventricular ectopic bigeminy Clinical findings will be pulsus bigemins and intermittent cannon waves as alternate P waves are falling on the T waves. When P waves fall on [..]

Click on the image for an enlarged view Supraventricular ectopics The lead II rhythm strip at the bottom of the images shows two premature complexes (4th and 11th). [..]

Click on the image for an enlarged view RBBB with LPHB and anterior wall myocardial infarction Right bundle branch block is evident as wide QRS (160 msec), slurred [..]

Click on the image for an enlarged view. Right bundle branch block Right bundle branch block is characterised by an RSR’ pattern with the R’ being slurred, producing [..]

Mean QRS axis is also often called the mean electrical axis of the heart. A simple way to assess whether the mean QRS axis is normal or not [..]

Click on the image for an enlarged view Anterior wall myocardial infarction The convex upwards ST elevation which is classical of acute myocardial infarction was described by Pardee [..]