Double right coronary artery or split right coronary artery?

Area of Science:

• Cardiology
• Congenital Anomalies
• Anatomical Variations

Background:

• Congenital anomalies of the coronary arteries (CAAs) affect 0.2-1.4% of the population.
• The double right coronary artery (RCA) is an exceptionally rare CAA.
• Existing literature reveals no consensus on the definition or nomenclature of a double RCA.

Discussion:

• A comprehensive literature search identified 44 cases of double RCA reported in 37 articles.
• The term "double right coronary artery" was most frequently used (28/37 articles).
• Debate exists whether "double RCA" and "split RCA" represent the same anomaly.

Key Insights:

• Lack of standardized definition hinders accurate diagnosis and classification of double RCA.
• Inconsistent terminology complicates research and clinical understanding of this rare coronary anomaly.
• The need for consensus on nomenclature and diagnostic criteria is paramount.

Outlook:

• Future research should focus on establishing a universally accepted definition and classification system for double RCA.
• Standardized diagnostic criteria will improve the identification and management of this rare CAA.
• Achieving consensus will facilitate further investigation into the clinical significance and potential implications of double RCA.