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Where Do Junctional Rhythms Originate?

Robert Thorne • • 6 min read
Where Do Junctional Rhythms Originate?

A junctional rhythm is an abnormal heart rhythm that originates from the AV node

AV node
The atrioventricular (AV) node is a small structure in the heart, located in the Koch triangle,[1] near the coronary sinus on the interatrial septum. In a right-dominant heart, the atrioventricular node is supplied by the right coronary artery. ... The intrinsic rate of the AV node is 40 to 60 beats per minute (bpm).
or His bundle.

What pacemaker site do junctional rhythms originate?

A junctional rhythm occurs when the electrical activation of the heart originates near or within the atrioventricular node, rather than from the sinoatrial node. Because the normal ventricular conduction system (His-Purkinje) is used, the QRS complex is frequently narrow.

What area of the heart is responsible for junctional rhythm?

Junctional rhythm describes an abnormal heart rhythm resulting from impulses coming from a locus of tissue in the area of the atrioventricular node, the "junction" between atria and ventricles.

Robert Thorne
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Robert Thorne

Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.