12 results
Pathophysiology of Hypocomplementemic Urticarial Vasculitis

C1q/anti-C1q antibiody ->
Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology of Hypocomplementemic ... Complex Formation - Complement ... TerrierBen #Hypocomplementemic
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... @AnnKumfer #Hypocomplementemia ... #Low #Complement ... Mnemonic #diagnosis #differential
Infectious Risks in Asplenia and Deficiencies in Humoral Immunity and Complement - Venn Diagram
Humoral Immunity:
 •
Deficiencies in Humoral Immunity ... and Complement ... Diagram Humoral Immunity ... T and B cells Complement ... immunocompromised #infections #differential
Infections in Immunocompromised Patients - Differential Diagnosis Summary
Innate Immunity:
 • Neutropenia
 • Phagocytic Deficiencies
 • Complement
Immunocompromised Patients - Differential ... Summary Innate Immunity ... Deficiencies • Complement ... Cell-Mediated Immunity ... Immunocompromised #Infections #differential
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Vasculitides - Differential ... often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... ear disease Differential ... against MPO • Complement
Humoral Immunity - Pathogenesis and Clinical Findings
Antigens (Ag) are produced from pathogens (bacteria, viruses, fungi, parasites)
Humoral Immunity ... activation • Complement ... contribute to immunity ... proliferate and differentiate ... exposure #Humoral #Immunity
Pneumonia - Causative Organisms
 • CAP - Typical, Atypical, Endemic
 • Aspiration
 • Decreased Immunity
 •
• Decreased Immunity ... #microbiology #differential ... organisms #causative #algorithm
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
staining): • Low Complement ... Idiopathic • Normal Complement ... Glomerulonephritis #Vasculitis #differential ... #diagnosis #algorithm
Causes of Extravascular and Intravascular Hemolysis - Differential Diagnosis Algorithm
Extravascular - Spleen and RES-mediated hemolysis
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Intravascular Hemolysis - Differential ... Diagnosis Algorithm ... perfringens - Complement-Mediated ... Extravascular #Differential ... #Diagnosis #Algorithm
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... Vasculitis Differential ... Elevated AST ALT • Hypocomplementemia ... Vasculitis) • Hypocomplementemic ... #Vasculitis #Differential