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Related Concept Videos

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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Hypersensitivity Reactions: Cytolytic Reactions01:01

Hypersensitivity Reactions: Cytolytic Reactions

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Type II hypersensitivity involves IgG and IgM antibodies targeting cell surface antigens, leading to cell destruction. This can occur through complement activation, antibody-dependent cell-mediated cytotoxicity (ADCC), or acting as opsonins for phagocytosis. When excessive, these reactions cause significant tissue damage.Drug-induced hemolytic anemia is a common example, where drugs like penicillin or cephalosporins bind to red blood cells, forming drug-protein complexes. These complexes...
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Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

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Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
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Hypersensitivity Reactions: Immune-Complex Reactions01:19

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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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Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

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Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
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Acute Pyelonephritis II: Diagnostic Studies and Management01:28

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Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
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Related Experiment Video

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Granulocyte-dependent Autoantibody-induced Skin Blistering
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Vancomycin-associated Henoch-Schönlein purpura.

Zaw Min1, Raquel R Garcia1, Monika Murillo1

  • 1Division of Infectious Disease, Allegheny General Hospital, Allegheny Health Network, Pittsburgh, PA, USA.

Journal of Infection and Chemotherapy : Official Journal of the Japan Society of Chemotherapy
|September 30, 2016
PubMed
Summary

Vancomycin can cause rare but serious skin reactions like IgA vasculitis. Promptly stopping the antibiotic is crucial for patient recovery and preventing potential kidney damage.

Keywords:
Henoch-Schönlein purpuraLeukocytoclastic vasculitisVancomycin

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Area of Science:

  • Dermatology
  • Nephrology
  • Infectious Diseases

Background:

  • Intravenous vancomycin is a critical antibiotic for treating infections like methicillin-resistant Staphylococcus aureus.
  • Vancomycin is associated with various cutaneous hypersensitivity reactions, including maculopapular rash, red-man syndrome, and severe conditions like Stevens-Johnson syndrome.
  • Cutaneous reactions necessitate careful monitoring and prompt diagnosis to differentiate from other conditions.

Observation:

  • An elderly patient with end-stage renal disease developed palpable purpura during vancomycin therapy.
  • Skin biopsy revealed leukocytoclastic vasculitis with IgA and C3 deposition in vessel walls.

Findings:

  • The patient was diagnosed with a vancomycin-associated Henoch-Schönlein variant of vasculitis.
  • Switching to daptomycin resolved the purpuric rash, indicating vancomycin as the causative agent.

Implications:

  • Clinicians should be aware of this rare vancomycin-induced vasculitis.
  • Early recognition and vancomycin discontinuation are key management strategies.
  • Re-challenge or desensitization is not recommended due to potential for severe recurrence.