Overview
Anomalous origin of the right coronary artery (ARCA) refers to a congenital coronary anomaly where the right coronary artery originates from an abnormal location, often complicating percutaneous coronary intervention (PCI) due to complex anatomical variations. 1Diagnosis
Imaging Techniques: Coronary angiography is essential for diagnosing ARCA, delineating the origin and course of the anomalous artery. 1
Anatomical Classification: ARCA can be classified into subtypes (Type A, B, C, high take-off) based on the anatomical position relative to the left coronary artery. 1
Functional Assessment: Fractional flow reserve (FFR) may be used to assess the hemodynamic significance of the anomaly. 1Management
Percutaneous Coronary Intervention (PCI): EBU catheters can be utilized for PCI in ARCA, showing high procedural success in certain anatomical subtypes (Type A and some Type B). 1
Anatomical Considerations: Success rates vary by subtype; EBU catheters may be less effective in Type C and high take-off anatomies. 1
Device Delivery: Ensuring stable engagement and full device delivery without catheter exchange is crucial for procedural success. 1Special Populations
No Specific Data: The provided abstracts do not cover management specifics for pregnancy, pediatrics, elderly patients, or comorbidities related to ARCA management. 1Key Recommendations
Utilize EBU catheters as a potential tool for PCI in ARCA, particularly in Type A and some Type B anatomical subtypes, to achieve high procedural success rates. (Evidence: Weak) 1
Consider anatomical subtype when selecting interventional techniques, as EBU catheter effectiveness may diminish in Type C and high take-off anomalies. (Evidence: Weak) 1
Employ coronary angiography for definitive diagnosis and functional assessment with FFR when indicated to guide management decisions. (Evidence: Moderate) 1References
1 Gebremedhin ML, Sigdel M, Ruixue Z, Du B, Zhang Y. What role should EBU catheters play in the interventional approach to anomalous right coronary arteries? A case series. PloS one 2025. link