Coronary artery bypass surgery in patients with anomalous circumflex artery

Area of Science:

• Cardiovascular Surgery
• Anatomical Variations
• Interventional Cardiology

Background:

• Anomalous origin of the circumflex artery (Cx) is a rare coronary anomaly.
• This variation can complicate coronary artery bypass surgery (CABG).
• Unstable angina necessitates timely and effective revascularization strategies.

Observation:

• Two patients with unstable angina and tri-vessel disease were identified.
• Both patients had a Cx artery with an anomalous origin and retroaortic course.
• Severe stenosis was present in the anomalous Cx artery.

Findings:

• Coronary artery bypass surgery (CABG) was successfully performed in both patients.
• Bilateral internal thoracic artery (ITA) grafts were utilized for revascularization.
• The use of bilateral ITA grafts proved feasible despite the anomalous Cx artery anatomy.

Implications:

• Coronary artery bypass surgery (CABG) with bilateral internal thoracic artery (ITA) grafts is a viable option for managing anomalous circumflex artery origins.
• Anomalous coronary artery anatomy, such as a retroaortic Cx, requires careful pre-operative assessment and surgical planning.
• This approach highlights the adaptability of surgical techniques to overcome anatomical challenges in complex coronary artery disease.