Related Experiment Video
Updated: Jun 8, 2026
10:07
Assessing Teratogenic Changes in a Zebrafish Model of Fetal Alcohol Exposure
Published on: March 20, 2012
Warfarin embryopathy: fetal manifestations
Helen Wainwright1, Peter Beighton
1Division of Anatomical Pathology, Faculty of Health Sciences, University of Cape Town, Observatory 7925, Cape Town, South Africa.
Virchows Archiv : an International Journal of Pathology
|October 6, 2010
Summary
Warfarin embryopathy in fetuses can cause nasal hypoplasia and cerebral hemorrhage. Bleeding is a significant factor in its development, with varied visceral manifestations observed during autopsy.
Area of Science:
- Medical Science
- Pathology
- Teratology
Background:
- Warfarin embryopathy is a serious congenital condition.
- Understanding its manifestations and pathogenesis is crucial for diagnosis and management.
Purpose of the Study:
- To analyze autopsy findings in fetuses diagnosed with warfarin embryopathy.
- To identify characteristic malformations and contributing factors.
Main Methods:
- Autopsy was performed on 13 fetuses with suspected warfarin embryopathy (1991-2007).
- Pregnancy data and radiographic babygrams were reviewed.
- Autopsy findings were tabulated, noting specific malformations and visceral involvement.
Main Results:
- Nasal hypoplasia was observed in 11 fetuses; epiphyseal stippling in only 3.
- Cerebral hemorrhage was a prominent feature in 8 fetuses, indicating bleeding as a key pathogenic factor.
- A wide range of visceral anomalies were documented.
Conclusions:
- Cerebral hemorrhage is a significant manifestation in warfarin embryopathy.
- Bleeding plays a crucial role in the pathogenesis of this condition.
- No clear correlation was found between maternal/gestational age and embryopathic feature severity.
Related Concept Videos
01:07Teratogenicity
The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
01:14Fetal Circulation
Fetal circulation is a unique system that facilitates the exchange of gases, nutrients, and waste products between the developing fetus and the mother. This intricate process takes place through a special organ called the placenta.
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...
01:07Development of Blood Vessels
The development of the vascular system in a fetus is a complex and intricate process that begins as early as 15 to 16 days post-conception. This process starts outside the embryo, specifically in the mesoderm of the yolk sac, chorion, and connecting stalk. Approximately two days later, the formation of blood vessels occurs within the embryo itself.
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
The initial formation of this system is facilitated by the small amount of yolk present in the ovum and yolk sac. Blood vessels originate from...
01:18Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
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...
01:25Endocarditis II: Clinical Features of Infective Endocarditis
Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...