Sinoatrial nodal artery
Citation, DOI and article data
The artery turns posteriorly below the superior vena caval opening.
The SA node can arise from its own opening in the anterior aortic sinus.
A study of 516 SA nodal arteries using MDCT found 96.4% of arteries were single whilst 3.6% were double. In this study only 53.4% of SA nodal arteries originated from the right coronary artery with 43% originating from the left circumflex artery.
Other variants include
- S-shaped variant 4
- 1. Song YS, Lee W, Park EA, Chung JW, Park JH. Anatomy of the sinoatrial nodal branch in Korean population: imaging with MDCT. (2012) Korean journal of radiology. 13 (5): 572-8. doi:10.3348/kjr.2012.13.5.572 - Pubmed
- 2. Villa AD, Sammut E, Nair A, Rajani R, Bonamini R, Chiribiri A. Coronary artery anomalies overview: The normal and the abnormal. (2016) World journal of radiology. 8 (6): 537-55. doi:10.4329/wjr.v8.i6.537 - Pubmed
- 3. Vikse J, Henry BM, Roy J, Ramakrishnan PK, Hsieh WC, Walocha JA, Tomaszewski KA. Anatomical Variations in the Sinoatrial Nodal Artery: A Meta-Analysis and Clinical Considerations. (2016) PloS one. 11 (2): e0148331. doi:10.1371/journal.pone.0148331 - Pubmed
- 4. Saremi F, Channual S, Abolhoda A, Gurudevan SV, Narula J, Milliken JC. MDCT of the S-shaped sinoatrial node artery. (2008) AJR. American journal of roentgenology. 190 (6): 1569-75. doi:10.2214/AJR.07.3127 - Pubmed