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Antithrombin plasma levels decrease is associated with preeclampsia worsening.

M Marietta1, L Simoni, P Pedrazzi

  • 1Department of Oncology and Haematology, University of Modena and Reggio Emilia, Modena, Italy. marietta@unimo.it

International Journal of Laboratory Hematology
|February 21, 2008
PubMed
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Antithrombin (AT) levels significantly drop in women with preeclampsia (PE) around delivery, indicating a potential marker for disease worsening. Levels recover postpartum, suggesting AT fluctuations correlate with preeclampsia progression.

Area of Science:

  • Obstetrics and Gynecology
  • Hematology
  • Perinatal Medicine

Background:

  • Antithrombin (AT) plasma levels are known to decrease in women with preeclampsia (PE).
  • The dynamic changes and clinical significance of AT fluctuations during the course of PE remain poorly understood.

Purpose of the Study:

  • To prospectively investigate the trend of Antithrombin (AT) plasma levels in women diagnosed with preeclampsia (PE).
  • To assess whether AT fluctuations are associated with the clinical evolution and severity of preeclampsia.

Main Methods:

  • Prospective observational study involving consecutive women admitted with a PE diagnosis.
  • Serial measurements of AT, platelet count, and D-dimer every other day.
  • Statistical analysis focused on 39 women with AT measurements on days -1, 0, and +1 relative to delivery.

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Main Results:

  • In 73 patients, AT, platelets, and fibrinogen decreased, while D-dimer increased during the observation period, reaching a nadir/peak on delivery day.
  • A cohort of 39 women showed a significant AT decrease on delivery day compared to the day before (P=0.027).
  • AT levels demonstrated a significant recovery on the first day postpartum (P=0.005).

Conclusions:

  • A significant drop in Antithrombin (AT) levels is associated with the clinical worsening of preeclampsia.
  • AT levels correlate with the disease's evolution, irrespective of preeclampsia severity.
  • These findings highlight AT as a potential biomarker for monitoring PE progression.