13 results
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
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
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... : - Kidneys: glomerular ... against MPO • Complement
Membranoproliferative Glomerulonephritis (MPGN) AKA: Mesangiocapillary GN
 • Active Urine Sediment (dysmorphic RBC, RBC casts, +/- proteinuria)
dysmorphic RBC, RBC casts ... formation along glomerular ... staining (lg + complement ... MGPN • Complement ... of alternative complement
Recommended initial testing for patients being evaluated for glomerular disease 

24-hour urine collection - Quantify proteinuria.
Recommended initial testing ... evaluated for glomerular ... or alternative complement ... infections are common causes ... #testing #workup
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Causes of Proteinuria ... present on repeat testing ... including overnight testing ... • Drugs Glomerular ... Diagnosis #Algorithm #Causes
Acute Kidney Injury - Differential Diagnosis Framework
PRERENAL:
 - Intrarenal vasoconstriction-hemodynamically mediated
 - Systemic vasodilation
 - Volume
INTRINSIC: - Glomerular ... or pigmented casts ... nephrotoxic drugs, treating ... underlying cause ... percutaneous drainage, or stenting
Recommended initial testing for patients being evaluated for glomerular disease
1) 24-hour urine collection - Quantify proteinuria.
Recommended initial testing ... evaluated for glomerular ... or alternative complement ... infections are common causes ... diagnosis #initial #testing
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
mimics, repeat testing ... • Evidence of glomerular ... proteinuria, RBC casts ... Nephrology if cause
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
• Kidneys: Non-glomerular ... tract, and often causes ... Elevated AST ALT • Hypocomplementemia ... Vasculitis) • Hypocomplementemic