12 results
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
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Skin, glomeruli ... 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)
formation along glomerular ... staining (lg + complement ... ) • Ex: HCV, HBV ... MGPN • Complement ... Glomerulonephritis #MPGN #nephrology
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 ... nephrotic #nephritic #nephrology
Intrinsic Renal Disease - Differential Diagnosis
Vascular:
 • Macrovascular: Renal artery occlusion, Fibromuscular disease
 • Microvascular: TTP/HUS,
Microvascular: TTP/HUS ... Athero-embolic, HTN, Vasculitis ... Glomerular: ... Renal #Disease #nephrology
Drug Induced Kidney Injury
 • Pre-Renal: NSAIDS, CNI, ACEI/ARB, IL-2 therapy, Diuretics CAR-T therapy
 • Osmotic
Vitamin C • Glomerular ... : Drug induced vasculitis ... differential #diagnosis #algorithm ... #nephrology #Medications
Acute Kidney Injury - Classification
Prerenal:
 • Dehydration
 • Heart failure (a.k.a. cardiorenal syndrome)
 • Liver failure
- Small vessel vasculitis ... - TTP/HUS ... • Glomerular disease ... Classification #diagnosis #nephrology
Recommended initial testing for patients being evaluated for glomerular disease
1) 24-hour urine collection - Quantify proteinuria.
or alternative complement ... antibody, and HIV ... risk factors for HIV ... for ANCA-related vasculitis ... initial #testing #nephrology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... • Kidneys: Non-glomerular ... HTN • Check: HBV ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic
Algorithm - Approach to the differential diagnosis of the patient presenting with overt glomerular proteinuria. CMV
Algorithm - Approach ... presenting with overt glomerular ... aHUS = atypical HUS ... #Algorithm #differential ... nephrotic #syndrome #nephrology