Research Article

Ultrasound Parameters of Umbilical Artery Blood Flow Are Associated with Amniotic Fluid and Umbilical Artery Concentrations of Erythropoietin and Oxidative Stress Injury

Table 5

Spearman correlation between ultrasound parameters of UmA blood flow at 37-41 gestational weeks, serum markers of oxidative stress, and concentrations of UmA erythropoietin in intrauterine hypoxia.

IndexS/DPIRI

Nox20.512<0.050.385<0.050.441<0.05
Nox40.667<0.050.424<0.050.475<0.05
CAT-0.395<0.05-0.411<0.05-0.482<0.05
SOD-0.221<0.05-0.377<0.05-0.398<0.05
MDA0.349<0.050.386<0.050.452<0.05
GSH-Px-0.429<0.05-0.399<0.05-0.469<0.05
Erythropoietin0.471<0.050.714<0.050.689<0.05

S/D: systolic to diastolic ratio; RI: resistant index; PI: pulse index; MDA: malondialdehyde; SOD: superoxide dismutase; GSH-Px: glutathione peroxidase; CAT: catalase; Nox2: NADPH oxidase 2; Nox4: NADPH oxidase 4.