Doppler ultrasound evaluation in preeclampsia

Area of Science:

• Obstetrics and Gynecology
• Medical Imaging
• Cardiovascular Physiology

Background:

• Preeclampsia (PE) is a leading cause of maternal mortality worldwide, affecting 5-8% of pregnancies.
• PE is defined by hypertension and proteinuria, posing significant risks to both mother and fetus.
• Doppler Ultrasound (US) is a recognized tool for PE prediction, but comprehensive data on altered US parameters is lacking.

Purpose of the Study:

• To evaluate uterine, umbilical, and middle cerebral arteries using Doppler US parameters in pregnant women.
• To assess hemodynamic repercussions associated with established preeclampsia.
• To identify the most frequently altered Doppler US parameters in PE.

Main Methods:

• A case-control study involving 102 pregnant Mexican women (65 with PE, 37 normotensive).
• Trans-abdominal Doppler US examinations were performed between 24-37 weeks of gestation.
• Analysis included resistance index (RI), pulsatility index (PI), notch (N), and systolic peak (SP) of uterine, umbilical, and middle cerebral arteries.

Main Results:

• An abnormal general Doppler US profile was significantly associated with PE (OR=2.93, P=0.021), with high specificity (89.2%) and positive predictive value (88.6%).
• Notch presence, umbilical artery RI and PI, and middle cerebral artery PI showed significant differences between PE and normotensive groups (P<0.05).

Conclusions:

• General Doppler US findings, uterine vessel notch, umbilical artery RI, and umbilical and middle cerebral artery PI are valuable tools for assessing PE-related hemodynamic changes.
• These Doppler US parameters can aid in determining the hemodynamic impact of preeclampsia.