Cord Blood S100B Protein Concentration in Neonates With Fetal Growth Restriction

"For all patients who provide informed consent to participate in the study, an ultrasound examination is performed within 48 hours prior to delivery. This assessment includes:~1. Measurement of fetal anthropometric parameters and estimation of fetal weight.~2. Evaluation of blood flow using the pulsatility index (PI) in the UA, UtA, DV, and MCA."

A 0.5 mL blood sample is collected from the clamped section of the umbilical cord and immediately sent to the laboratory for cord blood gas analysis, including the determination of pH, base excess (BE), and lactate levels.

A 1 mL sample of cord blood is collected in a labeled tube, which includes the mother's name, the child's gender, date of birth, and date of collection. The sample is then sent to the laboratory for centrifugation. The resulting serum samples are frozen, and once approximately 80 samples have been collected, they will be thawed and analyzed for S100B protein concentration. Any remaining material after laboratory processing will be properly disposed of.

A transfontanelle ultrasound examination is performed to assess for any abnormalities in the newborn.