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Glomerular Diseases - Nephritic and Nephrotic Syndromes

Nephritic syndrome—due to GBM disruption. 
Hypertension. t BUN and creatinine.
Glomerular Diseases ... RBC casts in urine ... but in severe cases ... diabetes)) #Glomerular ... #Diseases #Nephritic
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
red - cells Non-glomerular ... Dysmorphic red cells - Glomerular ... glomerular disease ... • Hyaline casts ... renal disease
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
or dipstick) Glomerular ... of Glomerular Bleeding ... • Signs of glomerular ... RBC castsDiagnostic ... disease Renal
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Causes of Hematuria ... • Calculi Glomerular ... RBCs and/or RBC casts ... epithelial side of glomerular ... endothelial side of glomerular
Acute Kidney Injury - Classification
Prerenal:
 • Dehydration
 • Heart failure (a.k.a. cardiorenal syndrome)
 • Liver failure
Acute Kidney Injury ... - TTP/HUS • Glomerular ... necrosis (causes ... nephritis (AIN) ... #Injury #Classification
Acute Kidney Injury - Differential Diagnosis Framework
PRERENAL:
 - Intrarenal vasoconstriction-hemodynamically mediated
 - Systemic vasodilation
 - Volume
Acute Kidney Injury ... INTRINSIC: - Glomerular ... white blood cell casts ... tubular cell casts ... or pigmented casts
Membranoproliferative Glomerulonephritis (MPGN) AKA: Mesangiocapillary GN
 • Active Urine Sediment (dysmorphic RBC, RBC casts, +/- proteinuria)
GN • Active Urine ... dysmorphic RBC, RBC casts ... formation along glomerular ... (Dense deposit disease ... #renal
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
: (AKI, proteinuria ... injury), Coags ... Goodpasture's cause ... , RBC casts, low ... hypercellular glomeruli
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
multiplex • Hematuria ... tract, and often causes ... Vasculitis - Skin, glomeruli ... : - Kidneys: glomerular ... purpura: strong sign