Anomalous circumflex artery encircling the aortic annulus: implications for mitral valve repair
Michele Portoghese1, Simone Mureddu1, Andrea Balata2
1Departement Of Cardiothoracic And Vascular Surgery, Cardiac Surgery Unit, A.O.U. Sassari, Sassari, Italy.
Insights
Anomalous origin of the left circumflex artery (LCx) increases risks during mitral surgery. Early recognition via imaging and multidisciplinary planning ensure surgical success and patient safety.
Area of Science:
- Cardiology
- Cardiac Surgery
- Medical Imaging
Background:
- Mitral surgery carries a rare but severe risk of coronary artery injury.
- Anomalous origin and course of the left circumflex artery (LCx) significantly elevate this procedural risk.
Observation:
- A case of LCx originating from the right coronary artery (RCA) with a retroaortic course through the mitro-aortic space is presented.
- Characteristic angiographic patterns and detailed anatomical visualization are crucial for risk assessment.
Findings:
- Integrated diagnostic imaging, including transesophageal echocardiography (TOE) and coronary computed tomography angiography (CCTA), identified the anomalous LCx.
- A multidisciplinary team approach involving cardiology and radiology facilitated optimal surgical strategy development.
Implications:
- Accurate diagnosis of coronary anomalies is vital for preventing intraoperative complications during mitral valve surgery.
- Minimally invasive surgical techniques, guided by comprehensive imaging, can be successfully employed for complex cases involving coronary anomalies.
Abstract:
Injury to coronary arteries during mitral surgery is a rare but life-threatening procedural complication, an anomalous origin and course of the left circumflex artery (LCx) increase this risk. Recognizing the anomaly by the characteristic angiographic pattern and identifying its relationship with the surrounding anatomical structure using imaging techniques, mainly transesophageal echocardiography (TOE) or coronary computed tomography angiography (CCTA), is of crucial importance in setting up the best surgical strategy. We report a case of anomalous origin of a circumflex artery (LCx) from the proximal portion of the right coronary artery (RCA) with a pathway running retroaortically through the mitro-aortic space. An integrated diagnostic approach using a multidisciplinary team with a cardiologist and an imaging radiologist allowed us to decide the surgical strategy. We successfully performed a mitral valvular repair using a minimally invasive minithoracotomic approach and implanting a complete semirigid ring.
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