November 26, 2009Fetal Diagnosis and Therapy
Doppler Study of Uterine Artery Blood Flow: Comparison of Findings in the First and Second Trimesters of Pregnancy
Why the study?
Does first-trimester uterine artery Doppler impedance correlate with second-trimester impedance in women with singleton pregnancies?
Population
55 women with singleton pregnancies
Comparison
Transvaginal and transabdominal Doppler… vs Transabdominal Doppler ultrasound at 19-22 weeks…
Design
Cohort
Follow-up
19-22 weeks gestation
Authors
Discussion
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Member takes
Implication
May support earlier risk stratification; leaves open prospective validation before changing screening practice.
Structured PICO
Does first-trimester uterine artery Doppler impedance correlate with second-trimester impedance in women with singleton pregnancies?
P
Population
55 women with singleton pregnancies
I
Intervention
Transvaginal and transabdominal Doppler ultrasound (colour flow mapping and pulsed wave velocimetry) at 10-13 weeks gestation
C
Comparator
Transabdominal Doppler ultrasound at 19-22 weeks gestation
O
Outcome
Impedance to flow in the uterine arteries (pulsatility index and resistance index)surrogate
First-trimester uterine artery impedance measured via transvaginal Doppler correlates with second-trimester impedance, suggesting its utility for early screening of pregnancy complications.
Cite This Study
Kaminopetros et al. (2009) studied this question.