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Updated: May 25, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Factor V Leiden mutation and its impact on pregnancy complications
L'ubica Hammerová1, Ján Chabada, Juraj Drobný
11st Department of Gynaecology and Obstetrics, Comenius University, Faculty of Medicine University Hospital, Bratislava, Slovakia. hammerova@gmail.com
The factor V Leiden mutation (FVL) in pregnant women did not increase adverse outcomes. This study found no significant impact on preeclampsia or other major complications, suggesting FVL carriership is safe for pregnancy.
Area of Science:
- Reproductive Medicine
- Genetics
- Obstetrics
Background:
- Factor V Leiden (FVL) mutation is a common inherited thrombophilia.
- Its role in adverse pregnancy outcomes requires further clarification.
- Understanding FVL's impact is crucial for maternal and fetal health management.
Purpose of the Study:
- To investigate the association between heterozygous factor V Leiden mutation and adverse pregnancy outcomes.
- To analyze the frequency of placenta-mediated complications in FVL carriers.
- To compare pregnancy outcomes between FVL carriers and a control group.
Main Methods:
- Prospective observational study design.
- Comparison of 11 heterozygous FVL carriers with 41 non-carrier controls.
- Analysis of placenta-mediated complications and delivery outcomes.
Main Results:
- No venous thromboembolism occurred in any pregnancy.
- Gestational age at delivery and birth weight deviation showed minor significant differences.
- Higher incidence of blood loss >1000 ml observed in the control group, not FVL carriers.
Conclusions:
- Maternal heterozygous FVL mutation did not elevate the risk of preeclampsia.
- Adverse pregnancy outcomes like placental abruption were infrequent.
- The study provides evidence that FVL carriership does not increase the risk of adverse pregnancy outcomes.
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