- Academic Editor
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Background: Umbilical cord torsion is one of the known causes of
perinatal fetal death, adding to the increase in perinatal morbidity and
mortality. However, there is no study on the relationship between umbilical cord
torsion and the changes in umbilical artery Doppler parameters. Methods:
The subjects included 962 pregnant women who were discharged from our hospital
from January 2015 to November 2021 and were eligible for inclusion (415 in the
study group and 547 in the control group). The measurement data of umbilical
artery Doppler parameters (peak systolic velocity (PSV), systolic/diastolic ratio
(S/D), resistance index (RI), pulse index (PI)) were collected from 21 to 40
weeks of gestation, and the differences among the collected parameters were
statistically analyzed. Results: The peak systolic velocity (PSV) of
umbilical artery were positively correlated with gestational age, while the
Doppler resistance parameters (S/D, RI, PI) of the umbilical artery were
negatively correlated with gestational age. The mean values of umbilical artery
Doppler parameters (PSV, S/D, RI, PI) in the study group were significantly lower
than those in the control group at the same gestational age (p