ABSTRACT
Objective To evaluate the role of combination of three-vessel views in ultrasound diagnosis of fetal aortic arch and pulmonary arterial branch anomalies.Methods The data of 66 cases of fetal aortic arch and pulmonary arterial branch anomalies were retrospectively analysed,including echocardiographic data,autopsy and operation records and postnatal follow-up results.Echocardiogaphic features and display frequencies on three vessels and trachea view(3VT),three vessels view(3VV)and three vessels and pulmonary arterial branches view(3VP)were summarized.Results There were 52 cases of aortic arch abnormalities,including 32 cases of right aortic arch with left ductus arteriosus,4 cases of double aortic arch,7 cases of aberrant right subclavian artery,6 cases of coarctation of aorta and 3 cases of interruption of aortic arch.Fourteen cases were diagnosed pulmonary aterial branch abnormalities,including 1 0 cases of crossed pulmonary arteries,2 cases of anomalous origin of left pulmonary artery from aortic arch and 2 cases of pulmonary artery sling.The display frequencies of fetal aortic arch and pulmonary arterial branch anomalies on 3VT,3VV and 3VP were 80.3%,19.7% and 39.4%.Conclusions The combination of three-vessel views is of great value in prenatal diagnosis of fetal aortic arch and pulmonary arterial branch anomalies.
ABSTRACT
The three vessel and three vessels and trachea views are reliable method with which to determine abnormalities in the upper mediastinum. Both have proved to be efficient in identifying an important group of major and critical heart defects involving the outflows tracts and the aortic arch. It also provides important clues to diagnose minor anomalies considered as markers of other congenital heart defect. Moreover, detection of reverse flow in a this transverse views is associated with complex heart defects, with major diminution of forward flow to the corresponding great vessels. A reverse shunt at this level allows the selection of a group of fetuses t risk of sudden rapid deterioration in early neonatal period.
Las visiones de 3 vasos y 3 vasos- tráquea son simples y confiables planos de visión del mediastino superior fetal. Han demostrado ser eficaces para identificar un grupo importante de defectos mayores y críticos relacionados con los tractos de salida y el arco aórtico. También entrega claves para el diagnóstico de lesiones menores, consideradas marcadores de cardiopatías congénitas. Más aún, el uso de color y la visualización de un flujo reverso en estas secciones transversas se asocian a anomalías complejas, que determinan una marcada disminución del flujo sanguíneo a través del vaso correspondiente. La detección de un flujo reverso a este nivel selecciona a fetos en riesgo genuino de presentar un deterioro brusco en el periodo neonatal inmediato.