Conclusion: Marked increases in UA S/Ds, even if within an institutional "normal" range, may indicate a fetus at increased risk of compromise.

A higher umbilical artery SD ratio was associated with asymmetric prenatal growth, poor weight gain and decreased myocardial performance in infants with HLHS.

Decreased diastolic flow results in a high S/D ratio and has been linked to risk of low birth weight and pregnancy-induced maternal hypertension.' This study ...

7 окт. 2019 г. · If there is an increase in the resistance to blood flow through the umbilical artery, this is seen as an increase in the systolic/diastolic (S/D) ...

The S/D ratio is normally less than 3.5 in preterm fetuses and less than 2.5 at term (Fig. 110.7). Worsening blood flow is reflected by increasing S/D ratio, ...

Previous studies have reported fetuses with S/D ratios greater than 3.0, after 30 gestational weeks, to be at an increased risk for low birth weight. This ...

12 февр. 2024 г. · Pregnancy-related conditions · suspected IUGR · previous pregnancy with IUGR or fetal death in utero · decreased fetal movement · oligohydramnios.

13 июл. 2023 г. · Umbilical artery doppler assessment provides information about increased vascular resistance, allowing for the identification of high-risk pregnancies.

11 июн. 2008 г. · High levels of stress hormones can be a response to restricted blood flow problems as well as a potential cause of them. Restriction of uterine ... Introduction · Methods · Results · Discussion

1 июл. 2016 г. · Gestational diabetes was observed in less than 20% cases with high S/D ratio and in AEDF. More than half pregnant women with abnormal UAD had.