Mid-gestational maternal cardiovascular profile in preterm and term pre-eclampsia: a prospective study

Area of Science:

• Cardiovascular physiology
• Maternal-fetal medicine
• Obstetrics

Background:

• Pre-eclampsia (PE) is linked to maternal cardiac changes, including diastolic dysfunction.
• Preterm PE can cause severe left ventricular hypertrophy and systolic dysfunction.
• Early identification of cardiovascular profiles can aid in understanding PE subtypes.

Purpose of the Study:

• To compare the mid-gestational cardiovascular profiles of nulliparous women who develop preterm PE versus term PE.
• To identify potential early biomarkers for different PE trajectories.

Main Methods:

• Prospective study of 269 nulliparous women at a tertiary referral university center.
• Mid-gestational (20-23 weeks) assessment included blood pressure, echocardiography, and cardiac tissue Doppler/strain rate analysis.
• Women were categorized based on subsequent development of preterm PE, term PE, or normal pregnancy.

Main Results:

• Women who developed PE (preterm or term) showed left ventricular concentric remodeling compared to controls.
• Only women who developed preterm PE exhibited a high-resistance, low-volume hemodynamic state.
• Preterm PE was associated with left ventricular diastolic/systolic dysfunction and impaired myocardial relaxation.

Conclusions:

• Asymptomatic cardiac diastolic dysfunction at mid-gestation is specific to women who later develop preterm PE.
• These findings support the concept of PE as a syndrome with diverse etiologies, not a single disorder.
• Cardiovascular profiling in early pregnancy may help differentiate PE subtypes.