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diagnosis rheumatology differential classification management nephrology urticarial workup acute aki causes champs cryoglobulinemia cryoglobulins glomerular hematology injury kidney low mimics
Diagnosis and Management of Hypocomplementemic Urticarial Vasculitis (HUV) Diagnosis of HUV 1) Chronic urticaria 2) Leukocytoclastic vasculitis 3)
Management of Hypocomplementemic ... (HUV) Diagnosis ... of HUV 1) Chronic ... 3) Hypocomplementemia ... TerrierBen #Hypocomplementemic
Pathophysiology of Hypocomplementemic Urticarial Vasculitis C1q/anti-C1q antibiody -> Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology of Hypocomplementemic ... Urticarial Vasculitis ... Complex Formation - Complement ... TerrierBen #Hypocomplementemic ... #HUV #Pathophysiology
Causes of Hypocomplementemia - CHAMPS Mnemonic C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis H - Heavy Chain deposition
Causes of Hypocomplementemia ... A - Atypical HUS ... Post/pauci immune glomerulonephritis ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
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):
Rapidly Progressive Glomerulonephritis ... staining): • Low Complement ... Idiopathic • Normal Complement ... #Vasculitis #differential ... #diagnosis #algorithm
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis 90%: -
rapidly progressive glomerulonephritis ... ANCA Associated Vasculitis ... anti-GBM) 10%: - Low Complement ... - Normal Complement ... , atypical HUS,
Vasculitis - Differential Diagnosis Framework When to Consider Vasculitis: • Purpura, ischemic skin lesions • Mononeuritis multiplex • Hematuria, proteinuria,
HTN • Check: HBV ... , pauci-immune glomerulonephritis ... (Glomerulonephritis ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic
Cryoglobulinemia Summary Cryoglobulins: • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
Skin ulcers - Glomerulonephritis ... • Infections: HCV ... infection, HBV ... infection, HIV infection ... • Low serum C4 complement
Acute Kidney Injury - AKI Workup Algorithm and Differential Diagnosis Baseline Investigations: full blood count with differential,
Injury - AKI Workup Algorithm ... and signs • Glomerulonephritis ... / Vasculits: ANCA ... pressure • TTP / HUS ... #AKI #Workup #Algorithm
Recommended initial testing for patients being evaluated for glomerular disease 24-hour urine collection - Quantify proteinuria.
or alternative complement ... antibody, and HIV ... risk factors for HIV ... for ANCA-related vasculitis ... workup #diagnosis #glomerulonephritis
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