The diagnostic value and misdiagnostic analysis of pulmonary artery sling by Doppler echocardiography
WU Li-jun1, ZHANG Yu-qi2, GAO Ling-ling1, CHEN Li-jun2, WANG Shan-shan2
1. Department of Echocardiography, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200092, China;
2. Department of Pediatric Cardiology, Shanghai Children’s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
Abstract：Objective: To evaluate the diagnostic value of pulmonary artery sling(PAS) by Doppler echocardiography, and analyze the misdiagnostic reason. Methods: Doppler echocardiography images were compared with surgical findings in 62 PAS children. Results: In 62 cases, 59 cases were complete PAS and 3 cases were partial PAS. Fourteen cases were simple PAS, and 48 cases were accompanied with other cardiovascular anomalies. In 62 cases, 55 cases(88.7%) were diagnosed correctly， 7 cases(11.3%) were misdiagnosed. In misdiagnosed cases, three were diagnosed as left pulmonary artery absence, two were left pulmonary artery dysplasia, one was primary pulmonary hypertension with mild tricuspid regurgitation, and one was tetralogy of Fallot with unclear left pulmonary artery. In 62 cases, 57 cases performed cardiac CT, heart abnormalities were same as surgical finding, diagnosed accuracy was 100%. CT diagnosed tracheal stenosis in 51 cases, but was not shown by echocardiography. Conclusion: PAS can be diagnosed accurately by Doppler echocardiography, but it is prone to be misdiagnosed. PAS might be suspected while left pulmonary artery could not be shown well by Doppler echocardiography, and cardiac CT should be performed to confirm the diagnosis of PAS and tracheal stenosis.
2015, Vol. 26 
