Placental Insufficiency: Modern Methods of Diagnosisand Prevention of Pregnancy Complications

Background: Placental insufficiency is a pathological condition characterized by inadequate perfusion and functional impairment of the placenta, resulting in suboptimal nutrient and oxygen delivery to the fetus. This condition is a major contributor to a spectrum of obstetric complications, including intrauterine growth restriction (IUGR), preeclampsia, preterm birth, and increased perinatal morbidity and mortality. Given the often asymptomatic progression of placental insufficiency during early stages, the development of accurate and timely diagnostic tools is critical for improving pregnancy outcomes. Methods and Results: Modern diagnostic strategies increasingly rely on the integration of biochemical, biophysical, and imaging modalities. Doppler ultrasonography of uterine and umbilical arteries remains a cornerstone in detecting abnormalities in placental blood flow and vascular resistance. Complementary to this, the use of advanced biomarkers—such as placental growth factor (PlGF), soluble fms-like tyrosine kinase-1 (sFlt-1), and pregnancy-associated plasma protein-A (PAPP-A)—has significantly enhanced the early identification of placental dysfunction, particularly in the prediction and stratification of preeclampsia and fetal growth disorders. Emerging technologies such as 3D/4D ultrasound, MRI of the placenta, and maternal serum exosome analysis are expanding diagnostic capabilities and allowing earlier risk assessment.Conclusion: Preventive strategies focus on both primary and secondary measures. Optimizing maternal health through management of hypertension, diabetes, and thrombophilia is essential in preconception and early gestational care. Pharmacological interventions such as low-dose aspirin, heparin, antioxidants, and L-arginine supplementation have shown varying degrees of efficacy in improving uteroplacental blood flow and reducing the risk of placental insufficiency-related complications. Lifestyle interventions, including nutritional counseling and smoking cessation, also play a key role. Moreover, enhanced surveillance protocols for high-risk pregnancies—including serial growth scans and fetal monitoring—allow for timely intervention, including the decision for early delivery when necessary.