Transabdominal uterine arteries Doppler at 12–14th and 20–24th week of gestation and pregnancy outcome: A prospective study

Uterine artery Doppler velocimetry and obstetric outcomes in connective tissue diseases diagnosed during the first trimester of pregnancy

“…Because this group of women is at low‐intermediate risk of adverse pregnancy outcome, results cannot be generalized to other populations. However, the prevalences of main pregnancy complications such as preeclampsia, FGR, prematurity and cesarean section were similar to those reported in other Italian studies among women attending obstetric ultrasonographic clinics …”

“…Uterine artery (UtA) Doppler examination can be used to indirectly assess trophoblast development and uteroplacental perfusion . Uteroplacental circulation develops through trophoblast invasion starting at 8 to 10 weeks with endovascular plugging and destruction of the muscoloelastic media of intradecidual segments of the spiral arteries, subsequently involving also the inner third of their myometrial segments .…”

“…In pregnancies complicated by preeclampsia or FGR, there is a superficial invasion of uterine spiral arteries with an increased resistance in Doppler flow velocity as early as 10 to 11 weeks of pregnancy . In longitudinal studies, increased Doppler pulsatility of uterine arteries persisting through the second trimester of pregnancy was associated with an increased risk of preeclampsia, FGR and stillbirth . In most cases, increased UtA resistance undergoes normalization as gestation advances.…”

“…5 Uterine artery (UtA) Doppler examination can be used to indirectly assess trophoblast development and uteroplacental perfusion. 6,7 Uteroplacental circulation develops through trophoblast invasion starting at 8 to 10 weeks with endovascular plugging and destruction of the muscoloelastic media of intradecidual segments of the spiral arteries, subsequently involving also the inner third of their myometrial segments. 6,7 Abnormal uteroplacental circulation, as assessed with UtA Doppler velocimetry, has been linked to pregnancy complications such as hypertension, FGR and early pregnancy failure, both in women at high risk 8 and in the general population.…”

The relation of pulsatility indices of middle cerebral, umbilical and uterine arteries with birth weight in normal pregnancies

“…The indices as a screening method for cases with preeclampsia or IUGR indicate increased risk of poor outcomes [10]. Doppler velocimetry of uterine arteries at second and third trimester of pregnancy should be useful to determine the risk in patients with preeclampsia or IUGR [11]. The evaluation of umbilical artery Doppler indices in high risk pregnancy has been associated with reduction in perinatal deaths [12].…”