Editing Atrioventricular node (section)

==Clinical significance==
* Atrioventricular conduction disease ([[Atrioventricular block|AV block]]) describes impairment of the electrical continuity between the atria and ventricles. It occurs when the atrial depolarization fails to reach the ventricles or is conducted with an abnormally long delay. It can result from an injury or be a genetically inherited disorder.<ref>{{Cite journal|author=Benson DW |title=Genetics of atrioventricular conduction disease in humans |journal=The Anatomical Record Part A: Discoveries in Molecular, Cellular, and Evolutionary Biology |volume=280 |issue=2 |pages=934–939 |date=October 2004 |pmid=15372490 |doi=10.1002/ar.a.20099|doi-access=free }}</ref>
* [[AV nodal reentrant tachycardia|Atrioventricular nodal re-entry tachycardia]],<ref name=gray2002p157/> which is caused by a dual AV node physiology and AVNRT can only occur in people with it, however almost half of the population have it, though only a few of them will develop AVNRT at some point in life.<ref>{{Cite web |title=Dual Atrioventricular Nodal Physiology - an overview {{!}} ScienceDirect Topics |url=https://www.sciencedirect.com/topics/medicine-and-dentistry/dual-atrioventricular-nodal-physiology |access-date=2022-11-14 |website=www.sciencedirect.com}}</ref>
* [[Cystic tumour of atrioventricular nodal region]] (CTAVN) CTAVN is of [[endodermal]] origin and occurs exclusively in the area of the AV node, [[tricuspid valve]], and [[interatrial septum]].<ref>{{Cite journal|vauthors=Sharma G, Linden MD, Schultz DS, Inamdar KV |title=Cystic tumor of the atrioventricular node: an unexpected finding in an explanted heart |journal=Cardiovascular Pathology |volume= 19|issue= 3|pages= e75–e78|date=January 2009 |pmid=19144541 |doi=10.1016/j.carpath.2008.10.011}}</ref>