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  • Title: Long-term outcomes following surgical repair of coronary artery fistula in adults.
    Author: Wada Y, Marui A, Arai Y, Nagasawa A, Tsumaru S, Arakaki R, Iida J, Kuroda Y, Tamai Y, Fukushima T, Soga Y.
    Journal: J Card Surg; 2021 Dec; 36(12):4618-4622. PubMed ID: 34618983.
    Abstract:
    BACKGROUND AND AIM OF THE STUDY: Coronary artery fistula (CAF) is a relatively rare cardiac anomaly. We investigated long-term outcomes following surgical repair of CAF in adults. METHODS: We retrospectively investigated 13 consecutive patients undergoing surgical repair of CAF in our institution between 2008 and 2019 (67.3 ± 10.4 years old, 38% male). CAF types were coronary artery-pulmonary artery fistula (77%), coronary artery-coronary sinus fistula (15%), and both (8%). CAFs originated from the left coronary artery (38%), right coronary artery (8%), and bilateral coronary arteries (38%). Pulmonary and systemic flow (Qp/Qs) was measured in seven patients (54%), with a mean value of 1.52. Seven patients underwent surgery for CAFs alone, and others simultaneously underwent surgery for comorbid cardiac diseases. RESULTS: All procedures were conducted under cardiopulmonary bypass. Surgical procedures were direct epicardial ligation of fistula (92%), direct closure of CAF through pulmonary artery incision (38%), direct closure of CAF through coronary sinus incision (8%), or patch closure of CAF through coronary artery incision (8%). Myocardial perfusion scintigraphy showed asymptomatic myocardial ischemia in the right coronary area after surgery in one patient. There were no deaths perioperatively or during follow-up (mean: 66.6 months). There were no coronary or other CAF-related events. CONCLUSIONS: Several anatomical variations in CAF were observed which coexist with cardiac disease. Long-term outcomes following surgical repair were satisfactory, and the concurrent intervention of CAFs during surgery for comorbid cardiac disease is useful to prevent future complications related CAFs in adults.
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