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Related Concept Videos

Venous Thrombosis I: Introduction01:30

Venous Thrombosis I: Introduction

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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...
101
Venous Thrombosis III: Interprofessional Care01:29

Venous Thrombosis III: Interprofessional Care

88
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...
88
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

88
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...
88
Pulmonary Embolism I: Introduction01:29

Pulmonary Embolism I: Introduction

210
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...
210
Venous Thrombosis IV: Nursing Management01:30

Venous Thrombosis IV: Nursing Management

66
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,...
66
Pulmonary Embolism III: Nursing Management01:27

Pulmonary Embolism III: Nursing Management

105
A pulmonary embolism occurs when a thrombus, amniotic fluid, tumor tissue, fat, or air embolus blocks one or more pulmonary arteries. Effective nursing management and patient education are crucial for improving outcomes and preventing recurrence.Nursing management starts with obtaining a comprehensive patient history, particularly noting any history of deep vein thrombosis (DVT). Assess for clinical manifestations, including dyspnea, chest pain, crackles, heart murmurs, and signs of right-sided...
105

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Updated: Nov 5, 2025

Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis
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Venous thromboembolism.

Faizan Khan1, Tobias Tritschler2, Susan R Kahn3

  • 1School of Epidemiology and Public Health, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada; Clinical Epidemiology Program, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada.

Lancet (London, England)
|May 13, 2021
PubMed
Summary
This summary is machine-generated.

Venous thromboembolism (VTE) affects millions globally. Diagnosis combines clinical scores, D-dimer tests, and imaging, with direct oral anticoagulants as primary treatment.

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Area of Science:

  • Cardiology
  • Hematology
  • Internal Medicine

Background:

  • Venous thromboembolism (VTE), encompassing deep vein thrombosis and pulmonary embolism, is a significant global health issue affecting millions annually.
  • While major surgery and active cancer are strong risk factors, many VTE events are unprovoked.
  • Current diagnostic pathways involve clinical probability assessment, D-dimer testing, and imaging.

Purpose of the Study:

  • To provide an overview of the diagnosis, treatment, and prevention of venous thromboembolism.
  • To highlight the role of direct oral anticoagulants (DOACs) in VTE management.
  • To discuss ongoing research directions in VTE care.

Main Methods:

  • Sequential diagnostic work-up including clinical scores (e.g., Wells score), D-dimer testing, and imaging (ultrasonography, CT, V/Q scan).
  • First-line treatment with direct oral anticoagulants (DOACs) for most VTE patients, including those with cancer.
  • Risk-stratified anticoagulation duration: discontinuation after 3-6 months for provoked events, indefinite treatment for high-risk or unprovoked VTE.

Main Results:

  • VTE can be excluded in patients with low clinical probability and normal D-dimer.
  • DOACs are the recommended first-line therapy for nearly all VTE cases.
  • Anticoagulation duration is individualized based on provoking factors and recurrence risk versus bleeding risk.

Conclusions:

  • Effective diagnosis of VTE relies on a multi-step approach.
  • DOACs represent a cornerstone in modern VTE treatment.
  • Future research aims to refine diagnostic tools, compare anticoagulants, and personalize VTE prevention and management strategies.