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Risk positive results after prenatal screening (first trimester or triple screen
test) |
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Conception after prolonged infertility or artificial reproductive methods |
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Previous history of genetic defects in the family |
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Bad obstetric history |
|
Abnormal ultrasound findings and fetal defects like like Cystic hygroma, Fetal hydrops,
Duedinal atricia, Hydrocephaly, Omphalocele, Fetal cardiac defects, Oligohydramnios,
Polyhydramnios, IUGR |