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Cardiac ultrasonography in structural abnormalities and arrhythmias Recognition and treatment Brook MM; Silverman NH; Villegas MWest J Med 1993[Sep]; 159 (3): 286-300Fetal cardiac ultrasonography has become an important tool in the evaluation of fetuses at risk for cardiac anomalies. It can both guide prenatal treatment and assist the management and timing of delivery. We recommend that a fetal echocardiogram be done when there is a family history of congenital heart disease; maternal disease that may affect the fetus; a history of maternal drug use, either therapeutic or illegal; evidence of other fetal abnormalities; or evidence of fetal hydrops. The optimal timing of evaluation is 18 to 22 weeks' gestation. An entire range of structural cardiac defects can be visualized prenatally, including atrioventricular septal defect, ventricular septal defect, cardiomyopathy, ventricular outlet obstruction, and complex cardiac defects. The outcome for a fetus with a recognized abnormality is unfavourable, with less than 50% surviving the neonatal period. Fetal cardiac arrhythmias are also a common occurrence, 15% in the series described here. Premature atrial or ventricular contractions are most commonly seen and usually require no treatment. Supraventricular tachycardia can result in hydrops and require in utero treatment to prevent fetal demise. Complete heart block, particularly in association with structural heart disease, has a poor prognosis for fetal survival.|*Ultrasonography, Prenatal[MESH]|Arrhythmias, Cardiac/*diagnostic imaging/therapy[MESH]|Female[MESH]|Fetal Diseases/*diagnostic imaging/therapy[MESH]|Heart Defects, Congenital/*diagnostic imaging/therapy[MESH]|Humans[MESH]|Pregnancy[MESH] |
