Predictive Value of SFlt-1/PlGF Ratio for the Diagnosis of Cardiovascular Disorders in the Puerperium: Pilot Study

Cardiovascular Disorder, Puerperium; Disease

SFlt-1/PlGF ratio

The goal of this clinical trial is to identify a risk stratification model and its predictive value for cardiovascular/hypertensive disorders in the puerperium (6 weeks postpartum) by making use of a panel of placental biochemical markers (sFlt-1 and PlGF: already used in pregnancy for prediction of preeclampsia), demographic, clinical and laboratory data. The goal is to create a score that allows the clinician to identify those expectant mothers who at discharge are at increased risk of developing cardiovascular/hypertensive disorders.

At the time of recruitment, patients will be adequately informed about the purpose and modality of the study and will sign an informed consent form for participation in the study. On the first postpartum day, on the occasion of the blood tests included in the normal care routine, the patients will undergo measurement of circulating levels of angiogenic factors (soluble fms-like tyrosine kinase, sFlt-1; placental growth factor, PlGF), already used in pregnancy for predicting the risk of early and late preeclampsia. Marker assay kits will be provided free of charge by the company DASIT. Prior to collection, systolic and diastolic blood pressure will be measured by manual sphygmomanometer in supine position after at least 15 minutes of rest. Anamnestic, clinical and laboratory data regarding pregnancy, childbirth and puerperium will be collected. A diary for recording blood pressure values in the puerperium will be provided on the same occasion. The patient will be instructed in home blood pressure monitoring which should take place twice a week for the next 6 weeks after delivery. Return of the diary containing the pressure data will be done by e-mail. Postpartum hypertension is defined according to ACOG criteria as a systolic blood pressure ≥ 140 mmHg and/or diastolic blood pressure ≥ 90 mmHg. If altered blood pressure values are found, the patient will be invited to go to the emergency department or to her primary care physician and treated according the usual clinical practice.

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