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Hand hygiene01:23

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Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
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Allergic Reactions: Anaphylaxis01:30

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Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin,...
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Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

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Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial...
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Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum...
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Hypersensitivity Reactions: Delayed Hypersensitivity Reactions01:29

Hypersensitivity Reactions: Delayed Hypersensitivity Reactions

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Delayed-Type Hypersensitivity (DTH), or Type IV hypersensitivity, is a cell-mediated immune response. It occurs when T cells, rather than antibodies, mediate a reaction to specific antigens. It is characterized by a delayed onset (1-2 days) and involves the recruitment of macrophages to the inflammation site.The initiation of a DTH response begins with the sensitization of T cells. During this phase, which lasts at least 1-2 weeks, antigen-specific T cells are activated, clonally expanded, and...
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A Mice Model of Chlorhexidine Gluconate-Induced Peritoneal Damage
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Allergy to Chlorhexidine.

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    This summary is machine-generated.

    Chlorhexidine, a common dental antiseptic, can cause serious anaphylaxis. Dentists should avoid using chlorhexidine mouthwash for dry socket treatment due to potential risks outweighing benefits.

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    Area of Science:

    • Dentistry
    • Allergy and Immunology

    Background:

    • Chlorhexidine is a widely used antiseptic in dental and healthcare products.
    • Increasing global reports link chlorhexidine to anaphylaxis, including cases following dental procedures.
    • Anaphylaxis to chlorhexidine is under-recognized, posing a risk in clinical settings.

    Purpose of the Study:

    • To highlight the risk of anaphylaxis associated with chlorhexidine.
    • To evaluate the safety and efficacy of chlorhexidine for dry socket treatment.

    Main Methods:

    • Review of reported anaphylaxis cases linked to chlorhexidine.
    • Assessment of current evidence regarding chlorhexidine use in dry socket management.

    Main Results:

    • Anaphylaxis is a serious adverse effect of chlorhexidine, often under-recognized.
    • Two UK incidents involved chlorhexidine mouthwash used post-extraction, leading to anaphylaxis.
    • Evidence suggests risks of chlorhexidine irrigation for dry sockets outweigh benefits.

    Conclusions:

    • Dentists must be aware of chlorhexidine's potential to cause anaphylaxis.
    • Avoidance of chlorhexidine for established dry socket treatment is recommended based on current evidence.
    • The clinical relevance emphasizes the potential for severe allergic reactions in dental practices.