Sinoatrial nodal artery
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At the time the article was created David Benjabutr had no recorded disclosures.View David Benjabutr's current disclosures
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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
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