IMPACT OF THE BIOLOGICAL RATIO ON MEDICAL DECISION MAKING IN WOMEN SUSPECTED OF PREECLAMPSIA

Centre Hospitalier Universitaire de Saint Etienne

Status

Completed

Conditions

Pre-Eclampsia

Treatments

Diagnostic Test: soluble fms-like tyrosine kinase (sFlt-1) / placental growth factor (PlGF) ratio

Study type

Observational

Funder types

Other

Identifiers

NCT06224946

CEROG 2022-OBS-0401

Details and patient eligibility

About

Previous studies demonstrated that Placental Growth Factor (PIGF) and Vascular Endothelial Growth Factor (VEGF) produced by trophoblast cells decreases during Preeclampsia, whereas soluble fms-like tyrosine kinase-1 (sFlt-1), an antiangiogenic factor, increases. The ratio sFlt-1/PlGF has a higher positive predictive value than the isolated measurement. A ratio under 38 exclude risk of imminent preeclampsia and allows to outpatient follow-up with a negative predictive value of 99.3%. A ratio equal or higher than 38 permits to direct high-risk patients towards hospitalization with a positive predictive value of 36.7% of preeclampsia at 4 weeks. These findings suggest that the ratio can be used to select more appropriately women needing hospitalization for suspected preeclampsia.

This is a single-center prospective and observational study conducted from the 1rst of October 2019 to the 27th of January 2021, including pregnant women suspected of preeclampsia, above 24 weeks of gestation. Values were measured using the Elecsys sFlt-1/PlGF immunoassay ratio. The aim of the study is to observe the clinical decision regarding hospitalization, intensive patient monitoring, corticosteroid administration, and labor induction before and after knowing the ratio value

Enrollment

314 patients

Sex

Female

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

pregnant patients over 24 weeks of amenorrhea
aged 18 and over
with suspicion of preeclampsia defined by the appearance of pregnancy-induced hypertension (≥ 140 in systolic and/or 90 mmHg in diastolic pressure over 2 measurements at 4 hours intervals) OR proteinuria (≥ 0.3 g per 24 hours).
who systematically gave oral consent after submitting the information sheet

Exclusion criteria

pregnant women with both hypertension and proteinuria because they already have a confirmed diagnosis of preeclampsia.
receiving antihypertensive treatment before pregnancy
or refusing to participate in the study The sFlt-1/PlGF ratio was measured only when clinically indicated as per the investigator's judgment.