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Related Concept Videos

Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

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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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Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...
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Pharmacologic intervention is crucial in treating cardiac arrest patients during ACLS or Advanced Cardiovascular Life Support. The ACLS algorithms guide the administration of specific drugs based on the patient's cardiac arrest rhythm, which includes pulseless ventricular tachycardia (VT), ventricular fibrillation (VF), asystole, and pulseless electrical activity (PEA).EpinephrineIndication: Epinephrine is the first-line drug for all cardiac arrest rhythms.Mechanism of Action: Epinephrine...
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Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...
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Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
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Related Experiment Video

Updated: Apr 30, 2026

Percutaneous Hepatic Perfusion PHP with Melphalan as a Treatment for Unresectable Metastases Confined to the Liver
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[Anaphylaxis to protamine during cardiovascular surgery].

H Madani1, E O Sadiki2, M Bouziane2

  • 1Service d'anesthésie réanimation, CHU Mohammed VI, Oujda, Maroc.

Annales Pharmaceutiques Francaises
|May 1, 2014
PubMed
Summary

Protamine reverses heparin during cardiac surgery but can cause severe adverse reactions. Identifying risk factors and vigilance during administration are crucial for patient safety.

Keywords:
AllergieAnaphylaxisCardiopulmonary bypassCardiovascular surgeryChirurgie cardiovasculaireCirculation extracorporelleHeparinHéparineProtamine

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Area of Science:

  • Cardiovascular Science
  • Anesthesiology
  • Pharmacology

Context:

  • Protamine is a low molecular weight polypeptide essential for reversing heparin anticoagulation in cardiac surgery.
  • Despite its efficacy, protamine administration carries risks of severe adverse reactions.

Purpose:

  • To elucidate the physiopathologic mechanisms underlying protamine-induced adverse reactions.
  • To identify risk factors associated with protamine's adverse effects.
  • To guide preventive strategies and clinical management.

Summary:

  • Protamine, while vital for reversing heparin anticoagulation in cardiac surgery, can precipitate serious adverse events such as pulmonary hypertension and systemic hypotension.
  • The exact mechanisms driving these reactions remain unclear, with both immunologic and non-immunologic pathways implicated.
  • Preoperative identification of susceptible patients is key to implementing preventive measures, as vigilance during administration is paramount.

Impact:

  • Highlights the need for improved understanding of protamine's adverse effects.
  • Emphasizes the importance of risk factor assessment for proactive patient management.
  • Informs clinical practice for anesthesiologists and cardiac surgeons regarding safe protamine administration and management of refractory shock.