Image characteristics and main types of abnormal branching of fetal pulmonary artery in prenatal echocardiography — a retrospective study
Abstract
Objectives: To explore the image characteristics and main types of abnormal branching of fetal pulmonary artery in prenatal echocardiography.
Material and methods: A retrospective analysis of 41 cases diagnosed with abnormal branching of fetal pulmonary artery by prenatal echocardiography was made. The image characteristics of the abnormalities, their combination with intra- or extra-cardiac malformations and chromosomal anomalies were analyzed.
Results: The results of prenatal echocardiography showed that, among the 41 cases, 1) 4 cases were with anomalous origin of single pulmonary artery, 8 cases with pulmonary artery agenesis, 9 cases with pulmonary artery sling; 20 cases with crossed pulmonary arteries. 2) 11 cases were complicated with intracardiac malformations and 10 with extracardiac malformations. 3) Only 7 case underwent chromosomal examination and 1 tested abnormal. 4) Pregnancy outcomes: 25 fetuses were born and their abnormalities confirmed by echocardiography (MRI or surgery) to be consistent with prenatal ultrasound diagnosis; 16 cases had their pregnancy terminated due to their combination with other severe malformations, which were confirmed by pathological anatomy after induced abortion.
Conclusions: Prenatal echocardiography can provide detailed images for the diagnosis of abnormal branching of fetal pulmonary artery, which can be complicated by intra- and extracardiac malformations and chromosomal anomalies and should be alerted.
Keywords: prenatal diagnosisechocardiographyabnormal branching of pulmonary artery
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