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Related Concept Videos

Allergic Reactions02:06

Allergic Reactions

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Adrenergic Agonists: Therapeutic Uses01:30

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Adrenergic agonists have diverse therapeutic uses across various medical conditions and emergencies.
Emergency and Intensive Care Unit (ICU) applications: Pressor agents increase blood pressure, heart rate, and contractility in shock and organ failure situations. Dopamine can induce vasodilation and stimulate adrenoceptors. Endogenous catecholamines are effective in treating cardiogenic shock. α2-agonists like clonidine can reverse anesthesia-induced hypertension.
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Allergic Drug Reactions01:27

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Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing...
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Hypersensitivities01:30

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Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
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Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
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Asthma is a chronic respiratory condition for which new therapeutic avenues, including anti-inflammatory drugs like mast cell stabilizers and anti-IgE treatments, continue to be developed.
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Related Experiment Video

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Measuring Local Anaphylaxis in Mice
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[Anaphylaxis: an update].

Florence Moret1, Vincent Morel2, Hoa Phong Pham Huu Thien1

  • 1Service de médecine interne, Hôpital fribourgeois, Site de Riaz, 1632 Riaz.

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Summary
This summary is machine-generated.

Anaphylaxis, a severe allergic reaction, can be fatal without prompt adrenaline treatment. This review covers its mechanisms, diagnosis, and management based on 2020 World Allergy Organization guidelines.

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Area of Science:

  • Allergy and Immunology
  • Clinical Medicine
  • Pathophysiology

Context:

  • Anaphylaxis represents the most severe form of acute systemic allergic reaction.
  • It poses a significant risk of mortality if not treated promptly with adrenaline.
  • Understanding anaphylaxis is crucial for emergency medical care.

Purpose:

  • To review the underlying mechanisms of anaphylaxis.
  • To outline current diagnostic criteria for anaphylaxis.
  • To discuss anaphylaxis management strategies according to the 2020 World Allergy Organization (WAO) guidelines.

Summary:

  • This review synthesizes current knowledge on anaphylaxis.
  • It details the pathophysiology, diagnostic standards, and therapeutic interventions.
  • Emphasis is placed on the WAO's 2020 recommendations for clinical practice.

Impact:

  • Provides an up-to-date resource for clinicians managing anaphylaxis.
  • Aims to improve patient outcomes through evidence-based guidelines.
  • Contributes to the understanding and preparedness for severe allergic reactions.