| · Diabetes mellitus or gestational diabetes |
· Suspected cardiac anomaly on obstetric ultrasound |
| · Lupus or Sjogren’s syndrome with anti-SSA/anti-SSB antibodies |
· Fetal arrhythmia |
| · Use of assisted reproduction technology |
· Extracardiac anomaly |
| · Maternal infection during pregnancy (i.e., Rubella, Coxsackie, Parvovirus) |
· Chromosomal abnormality |
| · Teratogen exposure |
· Increased NT (≥3 mm) |
| · Phenylketonuria, uncontrolled |
· Fetal hydrops or pericardial effusion |
| · Family history of congenital heart disease in 1st degree relative (mother/father/sibling of fetus) |
· Monochorionic twinning |
| · Abnormal umbilical or placental venous anatomy |
