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Related Concept Videos

Disorders of Hemostasis01:24

Disorders of Hemostasis

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

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

Anticoagulant Drugs: Low-Molecular-Weight Heparins

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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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Venous Thrombosis IV: Nursing Management01:30

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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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Vitamins01:30

Vitamins

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Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced...
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Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors01:20

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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: Aug 23, 2025

Analyzing Beneficial Effects of Nutritional Supplements on Intestinal Epithelial Barrier Functions During Experimental Colitis
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Dietary supplements and bleeding.

Jess Hatfield1, Saadeddine Saad2, Chad Housewright2

  • 1Texas A&M Health Science Center College of Medicine, Temple, Texas.

Proceedings (Baylor University. Medical Center)
|October 28, 2022
PubMed
Summary
This summary is machine-generated.

Many adults use herbal supplements, which can increase bleeding risks during surgery or with blood thinners. Patients should inform doctors about supplement use and stop non-essential ones before procedures.

Keywords:
Anticoagulantsbleedingdietary supplementsherbal supplementssurgical bleeding

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Area of Science:

  • Pharmacology
  • Herbal Medicine
  • Surgical Safety

Background:

  • One-third of US adults use herbal supplements, often undisclosed to physicians.
  • Herbal supplements can interact with surgical procedures and anticoagulant medications, posing bleeding risks.

Purpose of the Study:

  • To comprehensively review the evidence on bleeding risks associated with popular herbal and dietary supplements.
  • To inform healthcare providers about potential supplement-induced hemostatic alterations.

Main Methods:

  • A systematic literature search was conducted using PubMed.
  • Evidence regarding bleeding risks of various herbal supplements was reviewed and synthesized.

Main Results:

  • Garlic and hawthorn are strongly linked to surgical bleeding independently.
  • Ginkgo biloba, chondroitin-glucosamine, melatonin, turmeric, and others pose bleeding risks with anticoagulants.
  • Fish oil, ginseng, and saw palmetto showed no associated bleeding risk; evidence for others was conflicting.

Conclusions:

  • Physicians need awareness of potential anticoagulant effects from herbal supplements.
  • Patients must report all supplement usage to their doctors.
  • Discontinuing non-essential supplements two weeks before surgery is recommended to mitigate bleeding risks.