When can they diagnose a single ventricle?

Early second trimest. A fetal echocardiogram can be performed as early as 13-15 weeks gestation in some instances.The majority will be performed after 18-22 weeks during a pregnancy.A diagnosis can be made at that time and monitored through the pregnancy and a plan can be put in place regarding the delivery and neonatal care.Surgical planning can be started after the first diagnosis. Neonatal diagnosis is also possible.