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Related Concept Videos

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...
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,...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care01:29

Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care

Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
Pulmonary Embolism III: Nursing Management01:27

Pulmonary Embolism III: Nursing Management

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...
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants01:18

Anticoagulant 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...
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

Anticoagulant 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...

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Related Experiment Videos

[Standards and perspectives for thromboembolism prophylaxis].

C P Rader1

  • 1St. Franziskus-Hospital, Schönsteinstrasse 63, 50825, Köln. orthopaedie@st-franziskus-koeln.de

Der Orthopade
|June 5, 2007
PubMed
Summary

Preventing deep-vein thrombosis after knee replacement is crucial. Current prophylaxis includes low molecular weight heparins and pentasaccharides, with physical methods offering additional safety.

Area of Science:

  • Orthopaedic Surgery
  • Thrombosis Prevention
  • Pharmacology

Background:

  • Thromboembolic complications are severe risks following orthopaedic and trauma surgery.
  • Over 50% of total knee replacement patients face deep-vein thrombosis risk without prophylaxis.
  • Unfractionated heparin use declined due to heparin-induced thrombocytopenia, shifting prophylaxis to low molecular weight heparin and heparinoids.

Purpose of the Study:

  • To review current strategies for preventing thromboembolic complications after orthopaedic surgery.
  • To discuss risk stratification and appropriate prophylaxis for deep-vein thrombosis.
  • To evaluate the efficacy and limitations of pharmacological and physical prophylaxis methods.

Main Methods:

  • Review of existing literature on thromboembolism prophylaxis in orthopaedic surgery.

Related Experiment Videos

  • Analysis of risk factors and probability of deep-vein thrombosis based on risk levels.
  • Comparison of different anticoagulant agents and physical prophylaxis modalities.

    • Main Results:

    • Low molecular weight heparins and pentasaccharides (fondaparinux) are standard pharmacological prophylaxis for venous thromboembolism.
    • Fondaparinux is effective in highest-risk patients but has a delayed administration (6-8h post-surgery) due to bleeding risk.
    • Physical therapies offer effective, side-effect-free prophylaxis.

    Conclusions:

    • Risk-based management is essential for preventing deep-vein thrombosis in orthopaedic patients.
    • Pharmacological agents like LMWH and fondaparinux are key, but physical methods provide valuable adjunct prophylaxis.
    • Optimizing prophylaxis strategies reduces severe complications after knee replacement surgery.