Arrhythmia Management Glossary

Ablation catheter with saline irrigation to prevent overheating and enable deeper lesion formation.

Synthetic beta-adrenergic agonist used to increase heart rate and treat bradyarrhythmias or heart block.

Cardiac rhythm originating from the AV junction with narrow QRS complexes and absent or inverted P waves.

Surgical or percutaneous removal of chronically implanted pacemaker or defibrillator leads from the cardiovascular syste...

The electrical resistance of a pacemaker or ICD lead system, measured in ohms, indicating lead integrity and function.

A temporary pacemaker operating state triggered by placing a magnet over the device, typically resulting in asynchronous...

Automatic pacemaker function that temporarily changes from dual-chamber to single-chamber pacing during episodes of atri...

A fast heart rhythm originating from the ventricles with a consistent QRS morphology throughout the episode.

Non-invasive programmed stimulation; technique using external electrical stimulation to induce arrhythmias for diagnosti...

Ventricular tachycardia lasting less than 30 seconds that terminates spontaneously. Often abbreviated as NSVT in clinica...

Pacing technique that delivers stimuli at rates faster than the intrinsic arrhythmia to terminate reentrant tachycardias...

Inappropriate detection of non-cardiac signals or cardiac signals from unintended sources by pacemaker or ICD leads.

Clinical condition caused by loss of atrioventricular synchrony in patients with ventricular pacing, resulting in hemody...

Describing arrhythmias that occur in sudden, intermittent episodes with abrupt onset and termination.

Arrhythmia that is triggered or facilitated by bradycardia or pauses in cardiac rhythm, often related to early afterdepo...

Gradual spontaneous depolarization during diastole in pacemaker cells, leading to automatic impulse generation.

Ventricular tachycardia with continuously changing QRS morphology, indicating multiple activation wavefronts or shifting...

A disorder characterized by excessive heart rate increase upon standing, often accompanied by symptoms of orthostatic in...

An early heartbeat originating from the ventricles that interrupts the normal heart rhythm.

The paradoxical worsening of existing arrhythmias or induction of new arrhythmias by antiarrhythmic drugs. A significant...

Class IA antiarrhythmic medication used to treat both atrial and ventricular arrhythmias by blocking sodium channels.

Anticoagulation management strategy during electrophysiology procedures to prevent thromboembolic complications while mi...

A technique using precisely timed electrical impulses delivered through catheters to induce or terminate arrhythmias dur...

An ablation technique that electrically isolates the pulmonary veins from the left atrium to treat atrial fibrillation.