Atrioventricular nodal artery
The atrioventricular (AV) nodal artery is a small artery supplying the atrioventricular septal area and the atrioventricular node.
The atrioventricular nodal artery usually courses through the inferior pyramidal space of the heart.
The origin of the atrioventricular nodal artery seems to vary slightly with respect to the study and seems to depend on coronary arterial dominance 1-4. It seems to originate most frequently from the posterolateral branch of the distal segment of the right coronary artery and less often from the posterior descending artery or the distal segment of the circumflex artery 1-4.
The atrioventricular nodal artery usually terminates in the distal compact node near the central fibrous body of the membranous atrioventricular septum 2.
The atrioventricular nodal artery is thought to mainly supply the proximal atrioventricular conduction axis and adjacent structures within the inferior pyramidal space 2.
Rare origins of the atrioventricular nodal artery include the following 1:
- dual origin from both right coronary artery and circumflex artery
- right superior septal artery
- Kugel artery
- 1. Saremi F, Hassani C, SÃ¡nchez-Quintana D. Septal Atrioventricular Junction Region: Comprehensive Imaging in Adults. (2016) Radiographics : a review publication of the Radiological Society of North America, Inc. 36 (7): 1966-1986. doi:10.1148/rg.2016160010 - Pubmed
- 2. Kawashima T, Sato F. Clarifying the anatomy of the atrioventricular node artery. (2018) International journal of cardiology. 269: 158-164. doi:10.1016/j.ijcard.2018.07.022 - Pubmed
- 3. Kawashima T, Sato F. Data on the origin, course and distribution of the artery to the human atrioventricular node. (2018) Data in brief. 20: 1057-1061. doi:10.1016/j.dib.2018.08.161 - Pubmed
- 4. Berdajs D, Künzli A, Shurr U, Zünd G, Turina MI, Genonni M. Clinical anatomy of the atrioventricular node artery. (2006) The Journal of heart valve disease. 15 (2): 225-9. Pubmed