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Related Experiment Videos

Antithrombin III in normal pregnancy

G H Weenink, P E Treffers, L H Kahlé

    Thrombosis Research
    |May 15, 1982
    PubMed
    Summary
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    Plasma antithrombin III (AT III) levels remain stable during normal pregnancy and early postpartum. This study found no significant decrease in AT III in healthy women, indicating normal coagulation function throughout gestation and after delivery.

    Area of Science:

    • Obstetrics and Gynecology
    • Hematology
    • Clinical Chemistry

    Background:

    • Antithrombin III (AT III) is a key regulator of coagulation.
    • Pregnancy is associated with significant hemostatic changes.
    • Understanding AT III levels during pregnancy is crucial for assessing thrombotic risk.

    Purpose of the Study:

    • To determine plasma antithrombin III (AT III) levels in women during and after normal pregnancy.
    • To assess if AT III levels decrease during pregnancy in a healthy cohort.

    Main Methods:

    • Automated amidolytic technique used for AT III determination.
    • Study included 94 women meeting specific criteria for normal pregnancy and delivery.
    • AT III levels measured during pregnancy and early puerperium, compared to postpartum controls.

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    Main Results:

    • Plasma antithrombin III (AT III) levels were measured in 94 women.
    • No significant reduction in AT III levels was observed during pregnancy or early puerperium.
    • AT III levels in pregnancy were comparable to postpartum control values (6-8 weeks after delivery).

    Conclusions:

    • Normal pregnancy does not lead to a decrease in plasma antithrombin III (AT III) levels.
    • These findings suggest preserved anticoagulant capacity in healthy pregnancies.
    • Stable AT III levels indicate a lower risk of thrombosis in uncomplicated pregnancies.