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Surgical treatment of aberrant aortic origin of coronary arteries.

OBJECTIVES: Aberrant origin of the coronary arteries is rare but can be life threatening. It is an important cause of sudden death in athletes and other young adults, and may be treated surgically. Consensus exists that interarterial left coronary artery (LCA) should be surgically repaired. For interarterial right coronary artery (RCA), the discussion remains open. The purpose of this study was to analyse our surgical experience.

METHODS: From 2001 until 2014, 31 patients were operated for interarterial RCA, interarterial LCA or intraseptal course of the LCA. Twenty-six patients had interarterial RCA, 4 patients interarterial LCA and 1 patient an intraseptal course of the LCA. Median age at operation was 38 years (range 9-66 years). Twenty-eight patients had previous or current symptoms. The most important were a life-threatening event with resuscitation in 3 and myocardial infarction in 3 others. Surgical repair of interarterial RCA consisted of unroofing of the ostium with or without reimplantation in 25 patients and CABG on the RCA with a venous graft in 1 patient. Reconstruction of interarterial LCA consisted of ostium reconstruction of the LCA with a venous patch in 4 patients. The patient with an intraseptal course had a complete release of the LCA out of the septum and reimplantation in the correct coronary sinus. Follow-up was done by analysis of outpatient records, direct patient contact, echocardiography, electrocardiography, CT-angiography and an exercise test.

RESULTS: Median follow-up was 6 years (range 0-11 years). One patient was lost to follow-up. No early or late mortality occurred. Three patients had ischaemia with ventricular fibrillation or ventricular tachycardia shortly after surgery. Two were immediately reoperated, 1 had a stent implantation 1.5 months after release of intraseptal LCA. Two of these patients show a slight dysfunction of the left ventricle at follow-up. All other patients are asymptomatic.

CONCLUSIONS: Surgery for aberrant origin of coronary arteries is safe. There is a risk of cardiac ischaemia shortly after operation, especially in LCA reconstruction. We strongly believe that a slit-like coronary ostium and an intramural aortic course is an absolute indication for surgical repair, also in asymptomatic aberrant RCA.

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