We aimed to analyse the clinical characteristics of children with different types of anomalous aortic origin of the coronary artery (AAOCA) at different ages, and to discuss the factors related to myocardial ischaemia. In this retrospective study, we included 69 children diagnosed with AAOCA using CT coronary angiography; we classified the participants based on the type of AAOCA, age, and high-risk anatomy. The clinical characteristics of the different AAOCA types and age groups were compared, and the correlation between manifestations and high-risk anatomy was analysed. Anomalous origin of the left coronary artery from the right coronary artery sinus, anomalous origin of the right coronary artery from the left coronary artery sinus, and a coronary artery origin without coronary sinuses was found in 10 (14.5%), 57 (82.6%), 2 (2.9%) patients, respectively. There were no significant differences in sex, clinical manifestations, percentage of positive myocardial injury markers, electrocardiogram, transthoracic echocardiography, or proportion of high-risk anatomy among the groups with different AAOCA types. According to age group, the proportion of asymptomatic infants and pre-schoolers was the highest (p < 0.001). Forty-three patients (62.3%) had high-risk anatomy and were more likely to present with severe symptoms and cardiac syncope (p < 0.05). Conclusion: There were no significant differences in the proportions of high-risk anatomy and clinical characteristics among children with different AAOCA types. We found a relation between the severity of AAOCA clinical symptoms and anatomical risk. What is Known: • Clinical symptoms in children with AAOCA are varied and the results of routine cardiological examinations lack specificity. • High-risk anatomical features, exercise, cardiac symptoms, and ALCA are risk factors for the occurrence of SCD in patients with AAOCA. What is New: • Compared the clinical characteristics of different types of AAOCA and ages. • Analysed the correlation between symptoms and high-risk anatomical features.
Keywords: Anatomy; Anomalous aortic origin of the coronary artery; CT coronary angiography; Children; Clinical presentation.
© 2023. The Author(s).