JCK-AP session 6-2 (III-JCKAP6-2)
Surgery 2

[III-JCKAP6-2-1] The characteristics of patients with coronary complications after arterial switch operation in patients with complete transposition of great arteries.

^○Sangyun Lee¹, Eun Jung Bae¹, Han Ki Park², Se Yong Jung³, Hwa Jin Cho⁴, Susan Taejung Kim¹ (1.Seoul National University Hospital, Department of Pediatrics, Seoul National University, Seoul, 2.Division of Cardiovascular Surgery, Department of Thoracic and Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, 3.Division of Pediatric Cardiology, Department of Pediatrics, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, 4.Department of Pediatrics, Chonnam National University Children's Hospital and Medical School, Gwangju)

We established a multi-institutional Conotruncal Anomaly Cohort study group and conducted a retrospective analysis of medical records. We enrolled individuals born between 1990 and 2015 in South Korea who were diagnosed with complete transposition of the great arteries. A total of 1260 patients were registered, among whom 1149 underwent arterial switch operation. Among them, 27 patients were diagnosed with coronary artery complications. Of these, only 4 complained of angina, 2 exhibited syncope, 3 experienced mild chest discomfort, and 14 were asymptomatic. Nineteen patients were diagnosed via cardiac CT, and 12 underwent coronary angiography. Four had intramural coronary artery findings, while nine showed an acute coronary angle. At a median age of 7.0 years old (interquartile range: between 1.3 and 12.7), three underwent percutaneous stent insertion, and 17 received surgical treatment. Among the 17, two underwent CABG surgery, and 15 underwent coronary angioplasty. Fourteen of the 17 patients improved, two showed partial improvement, and one died from heart failure after surgery.Through our retrospective multi-institutional cohort study, we identified coronary artery complications in patients with transposition of the great arteries after arterial switch operation. Since many patients were asymptomatic, proactive imaging studies to evaluate the coronary arteries are necessary.