Coronary Artery Anomalies and Clinical Implications

Coronary artery anomalies (CAAs) encompass a diverse array of congenital deviations in the origin, course or structure of the coronary vessels. Though often asymptomatic, certain variants—particularly those with an interarterial trajectory between the aorta and pulmonary artery—carry a heightened risk of myocardial ischaemia, arrhythmia and sudden cardiac death, notably in young, active individuals. Advances in non-invasive imaging, including computed tomography angiography (CTA) and cardiovascular magnetic resonance (CMR), have markedly increased detection rates and facilitated detailed anatomical characterisation. Concurrently, patient-specific computational models and haemodynamic simulations are refining our understanding of how aberrant geometries influence wall shear stress, pressure gradients and atherosclerotic progression. In clinical practice, the management spectrum spans conservative surveillance, lifestyle modification and pharmacotherapy to interventional strategies such as stent angioplasty or surgical correction. Global collaboration is now focused on standardising diagnostic pathways, stratifying individual risk and integrating novel tools into evidence-based guidelines to improve long-term outcomes.

Research from Nature Portfolio

Recent studies have developed fully patient-specific lumped-parameter models to simulate coronary blood flow in cases of anomalous aortic origin of the coronary artery. By integrating clinical imaging and invasive functional data, such models replicate in-vivo haemodynamic conditions with high fidelity. This approach offers a non-invasive means of quantifying ischaemic risk, potentially guiding clinical decision-making and informing the development of personalised management strategies. Ongoing work aims to validate these models in larger cohorts, setting the stage for future clinical application.

Coronary Artery Anomalies and Clinical Implications publication trend

The graph below shows the total number of articles in coronary artery anomalies and clinical implications across all publications each year (not limited to Nature Index journals).

Technical terms

Coronary artery anomalies (CAA): Congenital deviations in the origin, course or structure of coronary vessels.

Anomalous aortic origin of the coronary artery (AAOCA): A variant where a coronary artery arises from the opposite aortic sinus.

Lumped-parameter model: A simplified mathematical representation of circulatory dynamics using discrete elements to simulate blood flow and pressure.

Computed tomography angiography (CTA): A non-invasive imaging modality that visualises coronary anatomy and vessel lumen in three dimensions.

Wall shear stress (WSS): The tangential force exerted by blood flow on the endothelial surface, influencing vascular remodelling and atherogenesis.

References

1. Automatic 3D Segmentation and Identification of Anomalous Aortic Origin of the Coronary Arteries Combining Multi-view 2D Convolutional Neural Networks. Journal of Imaging Informatics in Medicine (2024).
2. The Association Between the Hemodynamics in Anomalous Origins of Coronary Arteries and Atherosclerosis: A Preliminary Case Study Based on Computational Fluid Dynamics. Bioengineering (2024).
3. Lumped-parameter model as a non-invasive tool to assess coronary blood flow in AAOCA patients. Scientific Reports (2023).