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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...
Disorders of Hemostasis01:24

Disorders of Hemostasis

Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
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...
Introduction to Hemostasis01:05

Introduction to Hemostasis

Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
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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Related Experiment Video

Updated: Jun 1, 2026

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

Heparin-induced thrombocytopenia.

Nissar Shaikh1

  • 1Department of Anaesthesia, ICU and Pain Management, Hamad Medical Corporation, Doha, Qatar.

Journal of Emergencies, Trauma, and Shock
|June 3, 2011
PubMed
Summary

Heparin is a common anticoagulant, but can cause heparin-induced thrombocytopenia (HIT), a serious condition. Prompt diagnosis and alternative anticoagulation are crucial for managing HIT complications.

Area of Science:

  • Cardiology
  • Hematology
  • Pharmacology

Background:

  • Heparin remains a primary anticoagulant despite risks.
  • Increasing use is linked to vascular interventions and an aging population.
  • Heparin-induced thrombocytopenia (HIT) is a significant complication.

Purpose of the Study:

  • To review the clinical significance of heparin-induced thrombocytopenia (HIT).
  • To discuss the pathophysiology, diagnosis, and management of HIT.
  • To highlight prevention strategies for HIT.

Main Methods:

  • Clinical review of heparin use and its complications.
  • Analysis of HIT pathophysiology, including PF4/heparin/IgG complex formation.
  • Examination of diagnostic assays (serotonin release, ELISA) and treatment options (Direct Thrombin Inhibitors).
Keywords:
Direct thrombin inhibitorsheparinheparin-induced thrombocytopeniathrombosis

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Last Updated: Jun 1, 2026

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

Surface Engineering of Pancreatic Islets with a Heparinized StarPEG Nanocoating
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Surface Engineering of Pancreatic Islets with a Heparinized StarPEG Nanocoating

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A Uniform Shear Assay for Human Platelet and Cell Surface Receptors via Cone-plate Viscometry
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Main Results:

  • HIT presents as thrombocytopenia and a hypercoagulable state.
  • Diagnosis relies on clinical suspicion confirmed by laboratory assays.
  • Complications include thrombosis and skin gangrene.

Conclusions:

  • Stopping heparin and initiating Direct Thrombin Inhibitors is the primary treatment for HIT.
  • Alternative anticoagulation is necessary for procedures like hemodialysis in HIT patients.
  • Preventive measures include shorter heparin therapy and avoiding bovine heparin.