10 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 ... Urticarial #Vasculitis #HUV
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... Chain deposition disease ... A - Atypical HUS ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
Membranoproliferative Glomerulonephritis (MPGN) AKA: Mesangiocapillary GN
 • Active Urine Sediment (dysmorphic RBC, RBC casts, +/- proteinuria)
staining (lg + complement ... ) • Ex: HCV, HBV ... MGPN • Complement ... (Dense deposit disease ... glomerulopathy, radiation nephritis
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... against MPO • Complement ... Cryoglobulins • HIV ... • HBV HCV •
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
staining): • Low Complement ... Post-strep GN, Lupus Nephritis ... Idiopathic • Normal Complement ... involvement: Anti-GBM Disease ... differential #diagnosis #algorithm
Algorithm - Approach to the differential diagnosis of the patient presenting with overt glomerular proteinuria. CMV
Algorithm - Approach ... impairment), heart disease ... clusters because nephritic ... #Algorithm #differential ... #proteinuria #nephrotic
Recommended initial testing for patients being evaluated for glomerular disease 

24-hour urine collection - Quantify proteinuria.
for glomerular disease ... or alternative complement ... of glomerular disease ... glomerulonephritis #nephrotic ... #nephritic #nephrology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
atherosclerotic disease ... most important diseases ... HTN • Check: HBV ... Elevated AST ALT • Hypocomplementemia ... Vasculitis) • Hypocomplementemic
Recommended initial testing for patients being evaluated for glomerular disease
1) 24-hour urine collection - Quantify proteinuria.
for glomerular disease ... or alternative complement ... #glomerular #disease ... testing #nephrology #nephrotic ... #nephritis
Sjogren's Syndrome Overview

Epidemiology:
• F > M: 9:1
• 5-6th Decades (can be any age)

Autoimmune exocrinopathy multisystemic disease
multisystemic disease ... associated with other diseases ... Cytopenia: 2% • Hypocomplementemia ... demyelinating disease ... • Interstitial nephritis