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What is a His bundle Electrogram?

Author

Emily Baldwin

Updated on March 25, 2026

What is a His bundle Electrogram?

His bundle electrography is a test that measures electrical activity in a part of the heart that carries the signals that control the time between heartbeats (contractions).

What is his bundle pacing?

His-bundle pacing is a feasible method for delivering permanent pacing. It produces physiological ventricular activation via the His-Purkinje system. His pacing offers an alternative bradycardia pacing modality to right ventricular pacing and has the advantage that it does not cause intraventricular dyssynchrony.

What is a His bundle?

The bundle of His is an elongated segment connecting the AV Node and the left and right bundle branches of the septal crest. It is approximately 1.8 cm long in an adult heart[4] and is primarily located deep within the dense connective tissue.

What is the function of his bundle?

Function. The bundle of His is an important part of the electrical conduction system of the heart, as it transmits impulses from the atrioventricular node, located at the anterior-inferior end of the interatrial septum, to the ventricles of the heart.

What is the bundle of Kent?

The bundle of Kent is an abnormal extra or accessory conduction pathway between the atria and ventricles that is present in a small percentage (between 0.1 and 0.3%) of the general population.

What is the bundle of His and Purkinje Fibres?

Bundle of His is a collection of specialized heart muscle cells that transmit electrical impulses from the AV node in the heart to the muscle cells of the heart wall. Meanwhile, Purkinje fibres are thin filaments that distribute electrical impulses to the ventricle myocardium and activate right and left ventricles.

What is the His Purkinje system?

The His-Purkinje System (HPS) is responsible for the rapid electric conduction in the ventricles. It relays electrical impulses from the atrioventricular node to the muscle cells and, thus, coordinates the contraction of ventricles in order to ensure proper cardiac pump function.

Why is it called a bundle of his?

It conducts the electrical impulses that regulate the heartbeat from the right atrium to the left and right ventricles. The bundle of His is named after its discoverer, German cardiologist Wilhelm His (1836–1934).

What is the function of the His Purkinje system?

Is the bundle of his insulated?

The bundle of His consists of wide, fast-conducting muscle fibers that carry the cardiac impulse through the insulating annulus fibrosus into the fibrous upper part of the ventricular septum.

Is the bundle of His insulated?

What is the role of Purkinje Fibres?

The Purkinje fibers are specialized conducting fibers composed of electrically excitable cells. Purkinje fibers allow the heart’s conduction system to create synchronized contractions of its ventricles, and are essential for maintaining a consistent heart rhythm.