Women diagnosed with preeclampsia with severe features following ACOG recommendations (systolic/diastolic BP \>160/110 mmHg, proteinuria, or other severe features like headaches, visual disturbances, kidney/liver impairment, thrombocytopenia).
Healthy pregnant women at term (for comparison group, e.g., scheduled for elective Cesarean delivery).
You may not be if
Patients who can not provide written consent to participate in the study
BMI greater than 40 kg/m²
Multiple pregnancy (twins, triplets, etc.)
Non-reassuring fetal heart tracing
≤ 22 weeks gestation
History of chronic arterial hypertension
Chronic kidney disease
Congenital or known acquired heart disease
Chronic obstructive pulmonary disease
Diabetes
History of stroke
Not tolerating passive leg raising (unable to be placed in the required study position)
No TTE-windows
Withdrawing consent
Emergency cesarean delivery
Clareo Health | Finger Plethysmography to Predict Fluid Responsiveness in Healthy Pregnancy and Severe Preeclampsia