Intra-atrial course of the right coronary artery

Intra-atrial course of the right coronary artery is an uncommon anatomic variation in the course of the right coronary artery, usually involving the mid and distal segments, where the vessel partially or completely courses through the right atrial chamber. It is the most common intracavitary (intracameral) coronary artery variant 3.

It is usually asymptomatic and clinically occult but is of radiological significance in any fluoroscopic procedure requiring a wire or catheter to be passed through the right atrium, in which it is prone to injury causing right coronal artery territory ischemia or infarction. It may also be injured during tricuspid valve surgery, coronary artery catheterization and bypass grafting.

Congenital coronary artery anomalies
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Article information

rID: 36571
System: Cardiac, Vascular
Section: Anatomy
Synonyms or Alternate Spellings:
  • Intra-atrial course of the RCA
  • Intra-atrial course of RCA
  • Intraatrial course of the RCA

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Cases and figures

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  • Case 2 (curved MPR)
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