parenchymal kidney disease Flashcards
33 yr old woman presents with double vision, worsening headache, proteinuria for 3 years treated with ACEi
LVH
3+ protein, 3+ RBCs
.
how do you eliminate a pre-renal cause to kidney injury
- ECF volume depletion?
- drugs?
- cardiac or liver dysfunction?
how do you eliminate a post-renal cause?
no obstruction on ultrasound
RBC casts should point you in the direction of
Proliferative glomerular disease
nephrotic syndrome can ONLY be caused by
a glomerular disease that is nonproliferative
4 features of nephrotic syndrome
proteinuria >3.5g/day
- edema
- hypoalbuminemia
- dyslipidemia
which glomerular disease has RBC casts?
proliferative
hypertension hematuria proteinuria AKI typical constellation for
Nephritic syndrome, or glomerulonephritis
mesangial cell proliferation is due to
IgA nephropathy
how do you manage IgA nephropathy
Block RAAS
- steroids
- immunotherapy
DDx for endocapillary proliferation
proliferative lupus nephritis
- post-infectious GN
DDx for epithelial cell proliferation
crescentic GN, most aggressive
Order of aggressiveness of GN
WORST - crescentic - then endocapillary then mesangial (best)
Linear GBM stain –>
Anti- GBM
GOOD PASTURES
Course/granular stain of glomerulus
SLE nephritis
post-infectious GN
Little or no staining of Glomerulus
ANCA vasculitis
which proliferative GN do you consider Plasma exchange for?
Crescentic GN
what can cause decreased oncotic pressure?
Nephrotic syndrome, or redcued albumin synthesis
what can increase capillary permeability?
diabetes
malnutrition
syndrome that causes protein to leak into the urine
nephrotic syndrome
how do you measure protein excretion?
24 hr urine collection
Albumin to CR ratio
proteinuria is considered
> 3.5g/24 hours
normal value for 24 hour urine collection
why are lipids elevated in nephrotic syndrome?
hepatic lipoprotein synthesis is elevated by decreased oncotic pressure