The coagulation profile of preterm delivery

Area of Science:

• Obstetrics and Gynecology
• Hematology
• Reproductive Medicine

Background:

• Preterm birth etiology is often linked to hypercoagulation, but the coagulation status of preterm laboring patients is not fully understood.
• This study aimed to investigate the hemostatic system in pregnant women experiencing premature uterine contractions (PUC).

Purpose of the Study:

• To evaluate the hemostatic system and coagulation activation markers in pregnant women with PUC.
• To determine if coagulation parameters can differentiate between true preterm labor and other causes of PUC.

Main Methods:

• A cohort study involving 76 healthy pregnant women with regular PUC.
• The study included 38 women who delivered preterm (14 with PPROM) and 38 controls who delivered at term.
• Blood samples were analyzed for various hemostatic parameters and coagulation activation markers.

Main Results:

• Significantly shorter prothrombin time (PT) and activated partial thromboplastin time (aPTT) were observed in women with preterm labor compared to controls.
• No significant differences were found in fibrinogen, D-dimer, protein C, protein S, factor VIII, Von Willebrand factor, PAI-1, PT F1+2, tissue factor, or TFPI.
• Women with preterm premature rupture of membranes (PPROM) exhibited lower PT F1+2 levels than those with preterm birth and intact membranes.

Conclusions:

• Shortened PT and aPTT suggest increased thrombotic activity and may serve as a marker for true preterm labor in women with PUC.
• Further large-scale prospective studies are needed to confirm these findings and their clinical utility.