Arrhythmia Management Glossary

A cardiac resynchronization therapy device that provides biventricular pacing without defibrillation capability.

Ablation technique using extreme cold to create therapeutic lesions in cardiac tissue for arrhythmia treatment.

A dual-chamber pacemaker mode that paces and senses both atrial and ventricular chambers with dual response capability.

A cardiac pacing device with leads in both the right atrium and right ventricle to maintain AV synchrony.

Abnormal heart rhythm originating from an atrial focus outside the sinoatrial node, typically at rates of 150-250 bpm.

Intracardiac electrical signal recorded from electrodes positioned within the heart during EP procedures.

An electrophysiological technique used during ablation procedures to identify critical sites within reentrant tachycardi...

An invasive procedure that maps the heart's electrical system to diagnose and locate abnormal rhythms.

Percutaneous entry into the pericardial space to access the outer surface of the heart for mapping and ablation.

A pacemaker or ICD lead surgically placed directly on the outer surface of the heart muscle.

Elective replacement indicator signaling that a cardiac device battery requires replacement within 3-6 months.

A cardiac monitoring device activated by the patient when symptoms occur to capture intermittent arrhythmic episodes.

Conduction disturbance preventing electrical impulses from leaving their site of origin, such as the sinus node or an ec...

Detection of electrical activity from distant cardiac chambers by device leads not positioned in those chambers.

Class IC antiarrhythmic medication that blocks sodium channels, used primarily for atrial arrhythmias in patients withou...

Characteristic sawtooth-pattern ECG waves seen in atrial flutter, typically occurring at 300 beats per minute.

Cardiac beat resulting from simultaneous activation of the ventricles by two different impulse sources.

The specialized cardiac conduction pathway consisting of the His bundle and Purkinje fibers that conduct impulses throug...

A portable device that continuously records heart rhythm for 24-48 hours to detect intermittent arrhythmias.

Combined surgical and percutaneous catheter ablation approach for complex arrhythmias requiring both epicardial and endo...

A battery-powered device implanted in the chest that monitors heart rhythm and delivers electrical therapy to correct li...

An ICD shock delivered in response to misdetected rhythms that do not require defibrillation therapy.

A condition characterized by an abnormally elevated resting heart rate or excessive heart rate response to minimal exert...

Electrical recordings obtained from electrodes placed directly within the heart chambers during electrophysiology proced...