Independent risk factors for twin pregnancy adverse fetal outcomes before 28 gestational week by first trimester ultrasound screening

Table 2 Abnormal ultrasound findings during first trimester screening in the two groups

Abnormal group	Control group
Seven cases of one intrauterine fetal death	One case with one fetus showing NT ≥ 3.0 mm
One case of twin reversed arterial perfusion sequence	One case with both fetuses showing NT ≥ 3.0 mm
One case of one fetus with omphalocele
One case of one fetus with gastroschisis
One case of one fetus with hydrops fetalis
One case of one fetus with NT ≥ 3.0 mm
One case of one intrauterine fetal death and the other with NT ≥ 3.0 mm

NT: Nuchal translucency.