Cardiac Electrophysiology Glossary

A reentrant supraventricular tachycardia utilizing antegrade conduction through the AV node and retrograde conduction th...

The phenomenon where rapid pacing suppresses automaticity in ectopic foci, used to differentiate automatic from reentran...

An electrophysiologic technique that compares the QRS morphology during pacing with that during clinical ventricular tac...

Successful termination of tachycardia using overdrive pacing techniques without requiring cardioversion.

Ablation-induced destruction of vagal nerve fibers within cardiac tissue, particularly around pulmonary vein ostia.

The interval from the last pacing stimulus to the next local electrogram during entrainment mapping, used to determine p...

A technique using precisely timed electrical impulses to induce and study arrhythmias during electrophysiology procedure...

A catheter ablation technique to electrically isolate pulmonary veins from the left atrium to treat atrial fibrillation.

A novel ablation technique using brief, high-voltage electrical pulses to create irreversible electroporation of cardiac...

A cardiac catheter with four electrodes arranged in pairs for precise electrophysiological recordings and stimulation.

Specialized equipment that produces controlled radiofrequency energy for catheter ablation. Provides precise power contr...

Recovery of electrical conduction across previously isolated tissue, representing incomplete ablation lesions.

A rapid heart rhythm caused by electrical impulses circulating in a loop within the heart's conduction system.

An advanced mapping technique that displays activation propagation as dynamic color waves across three-dimensional cardi...

Advanced mapping technique identifying spiral wave reentrant circuits driving persistent atrial fibrillation.

A selective ablation technique targeting the slow pathway of dual AV nodal physiology to treat AVNRT while preserving no...

Swirling smoke-like echoes seen on echocardiography within cardiac chambers, indicating blood stasis and increased throm...

Explosive tissue vaporization during RF ablation caused by rapid heating beyond the boiling point of tissue water.

A deflectable introducer sheath that allows precise catheter positioning and stability within cardiac chambers.

An electrophysiology technique that identifies areas of abnormal cardiac tissue based on electrical characteristics duri...

A procedure to access the left atrium by puncturing the atrial septum from the right atrium. Essential technique for lef...

An intracardiac recording obtained between a catheter electrode and a distant reference, providing broad spatial sensing...

A rapid heart rhythm originating from the ventricles, potentially life-threatening.

Independent electrical activity between ventricles and atria, typically observed during ventricular tachycardia.