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Related Concept Videos

Venous Thrombosis I: Introduction01:30

Venous Thrombosis I: Introduction

Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
Pulmonary Embolism I: Introduction01:29

Pulmonary Embolism I: Introduction

Pulmonary embolism (PE) occurs when a thrombus, fat or air embolus, amniotic fluid, or tumor tissue blocks one or more pulmonary arteries. These blockages originate in the venous system or the right side of the heart.EtiologyPE primarily arises from deep vein thrombosis (DVT) and other hypercoagulable states, such as inherited thrombophilias. Additional etiological factors include venous stasis, commonly seen in obesity, and endothelial injury from surgery and trauma. Less common causes include...
Pulmonary Embolism I: Introduction01:19

Pulmonary Embolism I: Introduction

A blood clot, or thrombus, is a semi-solid mass composed of fibrin, platelets, and red blood cells. When it forms within a vessel, it can obstruct blood flow, known as thrombosis. If part of the clot detaches, it becomes an embolus that can travel and block distant vessels. When this occurs in the pulmonary arteries, it causes a condition known as pulmonary embolism (PE).Origin and ImpactMost often, the embolus originates from a thrombus in the deep veins of the lower limbs, a condition called...
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
Venous Thrombosis IV: Nursing Management01:30

Venous Thrombosis IV: Nursing Management

Nursing management begins with a thorough assessment of the patient's health history. Key factors include trauma to veins, peripherally inserted central catheters, varicose veins, recent pregnancy or childbirth, surgery, bacteremia, prolonged bed rest, atrial fibrillation, COPD, heart failure, cancer, coagulation disorders, myocardial infarction, spinal cord injury, stroke, prolonged travel, recent bone fractures, and dehydration. Review medication intake, particularly oral contraceptives,...

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Venous thromboembolism: the intricacies.

T K Dutta1, V Venugopal

  • 1Department of Medicine, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry 605 006, India. tkduttajipmer@yahoo.co.uk

Journal of Postgraduate Medicine
|February 27, 2009
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Summary

Venous thromboembolism (VTE) is a complex condition influenced by genetics and environment. Understanding thrombophilic factors and gene-environment interactions improves VTE risk assessment and management.

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Area of Science:

  • Hematology
  • Genetics
  • Epidemiology

Background:

  • Venous thromboembolism (VTE) is a significant clinical concern with a complex etiology.
  • Virchow's triad, described in 1856, laid the foundation for understanding VTE pathogenesis.
  • Recent decades have seen advancements in identifying thrombophilic factors, revolutionizing VTE management.

Purpose of the Study:

  • To review the current understanding of VTE pathogenesis and contributing factors.
  • To highlight the role of genetic and environmental interactions in VTE development.
  • To discuss specific risk factors and clinical manifestations of VTE.

Main Methods:

  • Review of historical and recent literature on venous thromboembolism.
  • Analysis of genetic mapping and linkage studies related to VTE.
  • Examination of gene-environment interactions and specific clinical scenarios.

Main Results:

  • VTE is a multifactorial disorder influenced by numerous gene-gene and gene-environment interactions.
  • Pregnancy significantly increases VTE risk, especially with Factor V Leiden, prothrombin mutation, and antithrombin deficiency.
  • Long-haul flights are recognized risk factors for VTE; antiphospholipid syndrome (APS) presents with both venous (70%) and arterial (30%) thrombotic events.

Conclusions:

  • The understanding of VTE pathogenesis has evolved significantly, emphasizing its complex, multifactorial nature.
  • Identifying specific thrombophilic factors and understanding gene-environment interactions are crucial for accurate prognostication and management.
  • Awareness of VTE risks in specific populations (e.g., pregnant women) and situations (e.g., air travel) is essential.