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Related Concept Videos

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...
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...
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...
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...
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors

Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...

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Updated: Jun 13, 2026

Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings
06:39

Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings

Published on: June 13, 2025

Low dose heparin prophylaxis.

J Hirsh

    Canadian Family Physician Medecin De Famille Canadien
    |May 15, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Low dose heparin prophylaxis effectively prevents deep vein thrombosis and pulmonary embolism in abdominal surgery patients. However, its effectiveness is reduced in hip surgery, with a potential increased bleeding risk.

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    Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood
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    Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood

    Published on: October 12, 2012

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    Last Updated: Jun 13, 2026

    Through-the-Wall Blood Sampling Method to Minimize Sleep Disruption in Clinical Settings
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    Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood
    11:17

    Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood

    Published on: October 12, 2012

    Area of Science:

    • Medical research
    • Surgical outcomes
    • Thromboprophylaxis

    Background:

    • Postoperative venous thromboembolism (VTE) is a significant risk in surgical patients.
    • Low dose heparin is a common prophylactic measure against VTE.
    • Effectiveness of low dose heparin varies by surgical procedure type.

    Purpose of the Study:

    • To evaluate the efficacy of low dose heparin prophylaxis in preventing VTE.
    • To compare the effectiveness of low dose heparin in abdominal versus hip surgery.
    • To assess the association between low dose heparin and bleeding complications.

    Main Methods:

    • Review of studies on low dose heparin prophylaxis in elective surgery.
    • Analysis of VTE incidence (calf, popliteal, femoral vein thrombosis, pulmonary embolism) in different surgical groups.
    • Assessment of bleeding risk associated with low dose heparin.

    Main Results:

    • Low dose heparin significantly reduces VTE frequency in elective abdominal surgery.
    • A notable reduction in major pulmonary emboli was observed in general surgical patients.
    • Low dose heparin showed less effectiveness in hip surgery patients.
    • An increased risk of bleeding was associated with low dose heparin in some hip surgery studies.

    Conclusions:

    • Low dose heparin is effective for VTE prophylaxis in elective abdominal surgery.
    • Prophylactic strategies may need to be tailored for hip surgery due to reduced efficacy and potential bleeding risks.
    • Further research is warranted to optimize VTE prevention in high-risk surgical populations.