Skip to main content
. 2020 Mar 25;37(5):1083–1095. doi: 10.1007/s10815-020-01750-5

Table 2.

UA blood flow parameters at the second and third trimesters

Variables PI RI S/D
2nd T 3rd T P values 2nd T 3rd T P values 2nd T 3rd T P values
Control (n = 20) 1.06 ± 0.17 0.83 ± 0.13 < 0.001*** 0.66 ± 0.06 0.57 ± 0.06 < 0.001*** 3.02 ± 0.48 2.40 ± 0.32 < 0.001***
FGR (n = 20) 1.23 ± 0.11 0.96 ± 0.13 < 0.001*** 0.72 ± 0.03 0.62 ± 0.06 < 0.001*** 3.61 ± 0.41 2.68 ± 0.38 < 0.001***
P values < 0.001*** 0.005** < 0.001*** 0.026** < 0.001*** 0.015**

Values are expressed as mean ± SD

UA umbilical artery, FGR fetal growth restriction, PI pulsatility index, RI resistance index, S/D peak systolic velocity/end diastolic velocity, T trimester

**P < 0.01, ***P < 0.001