All About Cardiovascular System and Disorders

The two common methods of mapping cardiac arrhythmias are activation mapping and pace mapping.

Catheter induced ectopy is due to irritation of the local endocardium and will show all the features of a target ventricular ectopic for ablation.

ST elevation during treadmill test documented by serial ECGs through recovery.

ECG showing Sinus bradycardia with first degree AV block.

ECG showing Ventricular ectopic beats.

Ventricular ectopic beats are recognized as wide bizarre QRS complexes which occur prematurely and are not usually preceded by a P wave.

Ventricular fibrillation is recognized on the electrocardiographic monitor as a highly disorganized rhythm with no definite P waves or QRS complexes.

Three or more ventricular complexes (wide QRS) occurring at a rate more than 100 per minute is taken as ventricular tachycardia (VT).

Accelerated idioventricular rhythm (AIVR) is a classical reperfusion arrhythmia which occurs during thrombolysis of acute myocardial infarction.

Three or more different morphologies of P waves, with a rate more than 100 per minute defines multifocal atrial tachycardia (MAT) or chaotic atrial rhythm.