Related Experiment Video
Updated: Jun 16, 2026

Determination of the Procoagulant Activity of Extracellular Vesicle (EV) Using EV-Activated Clotting Time (EV-ACT)
Published on: August 4, 2023
Coagulation in pregnancy
Patrick Thornton1, Joanne Douglas
1Department of Anesthesia, University of British Columbia, BC Women's Hospital, Vancouver, Canada.
Pregnancy significantly alters the coagulation system. Understanding these changes is crucial for managing pregnant patients, especially those with rare blood disorders, due to limited clinical guidance.
Area of Science:
- Obstetrics
- Hematology
- Anesthesiology
Background:
- Pregnancy involves dynamic alterations in the coagulation system.
- Managing parturients with pre-existing hematological conditions presents unique challenges.
- Limited data exists for guiding obstetric and anesthetic care in these complex cases.
Purpose of the Study:
- To highlight the critical changes in the coagulation system during pregnancy.
- To emphasize the importance of understanding these hematological shifts for clinical practice.
- To address the knowledge gap in managing rare hematological conditions in parturients.
Main Methods:
- Review of current literature on coagulation physiology in pregnancy.
- Analysis of clinical guidelines and case reports concerning hematological disorders in parturients.
- Synthesis of information to inform obstetric and anesthetic management strategies.
Main Results:
- Pregnancy-induced coagulation changes require careful consideration.
- Pre-existing rare hematological conditions complicate parturient management.
- Evidence-based guidance for these specific scenarios is often scarce.
Conclusions:
- Clinicians must possess a thorough understanding of pregnancy-related coagulation changes.
- Specialized knowledge is essential for the safe obstetric and anesthetic care of parturients with hematological conditions.
- Further research is needed to develop comprehensive management protocols for rare hematological disorders during pregnancy.
Related Concept Videos
Coagulation
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
Coagulation
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Extrinsic and Intrinsic Pathways of Hemostasis
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
Disorders of Hemostasis
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Introduction to Hemostasis
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...