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Related Concept Videos

Disorders of Hemostasis01:24

Disorders of Hemostasis

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Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
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Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
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Coagulation01:09

Coagulation

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The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries.
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...
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Pathophysiology of Diabetes01:20

Pathophysiology of Diabetes

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Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
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Introduction to Hemostasis01:05

Introduction to Hemostasis

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Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
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,...
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Extrinsic and Intrinsic Pathways of Hemostasis01:20

Extrinsic and Intrinsic Pathways of Hemostasis

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Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
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...
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Related Experiment Video

Updated: Jul 31, 2025

Author Spotlight: Deciphering Coagulation Disorders in Traumatic Brain Injury Patients
04:56

Author Spotlight: Deciphering Coagulation Disorders in Traumatic Brain Injury Patients

Published on: August 4, 2023

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Maternal Coagulation Disorders and Postpartum Hemorrhage.

Tracy C Bank1, Marwan Ma'ayeh2, Kara M Rood1

  • 1Department of Obstetrics & Gynecology, The Ohio State University Wexner Medical Center, Columbus, Ohio.

Clinical Obstetrics and Gynecology
|May 2, 2023
PubMed
Summary

Rare coagulation disorders can cause postpartum hemorrhage. Suspect these in patients with bleeding history, family history, or persistent bleeding, as prompt diagnosis prevents maternal complications.

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Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye
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Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye
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Area of Science:

  • Obstetrics and Gynecology
  • Hematology

Background:

  • Postpartum hemorrhage (PPH) is a leading cause of maternal mortality worldwide.
  • While uterine atony, trauma, and retained products are common PPH causes, rare coagulation disorders are often overlooked.
  • Early recognition of coagulopathies is crucial for effective management.

Purpose of the Study:

  • To highlight the importance of considering coagulation disorders in the differential diagnosis of PPH.
  • To outline key clinical indicators for suspecting coagulopathic conditions in obstetric patients.
  • To review common coagulopathic conditions relevant to PPH.

Main Methods:

  • This review synthesizes current literature on coagulation disorders presenting as PPH.
  • It focuses on diagnostic clues and specific conditions such as disseminated intravascular coagulation, platelet disorders, and factor deficiencies.
  • Clinical presentation and management strategies are discussed.

Main Results:

  • Coagulation disorders, though rare, are significant contributors to PPH.
  • Risk factors include personal or family history of bleeding disorders and persistent bleeding unresponsive to other treatments.
  • Disseminated intravascular coagulation, platelet dysfunction, and factor deficiencies are key entities.

Conclusions:

  • Coagulation disturbances should be actively investigated in cases of severe PPH, especially with suggestive patient history.
  • Timely diagnosis and targeted treatment of coagulopathies can significantly reduce maternal morbidity and mortality.
  • Integrating hematological assessment into PPH management protocols is essential.