To study the detection significance of ultrasonic multi-vessel blood flow parameters in the third trimester of pregnancy for fetuses with intrauterine growth restriction and its effect on pregnancy outcomes.

Seventy pregnant women in the third trimester of pregnancy who underwent routine obstetric examination in our hospital from December 2018 to December 2019 and were diagnosed with fetal intrauterine growth restriction were selected as the research subjects. Among them, 35 pregnant women underwent the detection of ultrasonic multi-vessel blood flow parameters (group A), and 35 pregnant women did not undergo the detection of ultrasonic multi-vessel blood flow parameters (group B). Thirty pregnant women with normal development who underwent routine obstetric examination and detection of ultrasonic multi-vessel blood flow parameters in our hospital during the same period were selected as group C. The age of group A was (31.94±10.76) years old, (32.18±10.69) years old of group B, and (31.40±10.13) years old of group C. The middle cerebral artery blood flow parameters and umbilical artery blood flow parameters of pregnant women in group A and C were compared, and the pregnancy outcomes of pregnant women in group A and B were compared.

The levels of pulsatility index (PI), resistance index (RI), and peak systolic velocity / end diastolic velocity (S/D) of fetal umbilical artery in group A were (1.39±0.33), (0.73±0.07), and (3.73±0.23), which were higher than those in group C [(0.78±0.10), (0.56±0.03), and (2.45±0.16)] (all P<0.05). The levels of PI and RI of fetal middle cerebral artery in group A were (1.16±0.20) and (0.62±0.05), which were significantly lower than those in group C [(1.99±0.28) and (0.81±0.24)] (bothP<0.05); there was no statistically significant difference in the peak systolic velocity (PSV) level between group A and group C (P>0.05). The incidence of neonatal asphyxia in group A was significantly lower than that in group B [28.57% (10/35) vs.54.29% (19/35)], and the rate of premature delivery was significantly higher than that in group B [45.71% (16/35) vs.20.00% (7/35)] (bothP<0.05); while there were no statistically significant differences in the rates of postpartum hemorrhage and low birth weight infants between the two groups (bothP>0.05).

The detection of ultrasonic multi-vessel blood flow parameters in the third trimester of pregnancy has certain diagnostic significance for fetuses with intrauterine growth restriction, and can provide clinicians with more accurate data to determine the fetal situation in the uterus, so that doctors can formulate effective treatment plans and improve the pregnancy outcomes.

Ultrasonic multi-vessel blood flow parameters; The third trimester of pregnancy; Intrauterine growth restriction; Pregnancy outcomes