Nephrology Flashcards
Renal rejection: minutes to hours
Hyperacute rejection
Renal rejection: <6 months
Acute graft failure
Renal rejection: >6 months
Chronic graft failure
Cause of hyperacute rejection
Antibodies against ABO or HLA antigens
Examples of type II hypersensitivity
Cause of acute rejection
Mismatched HLA - Cell-mediated (cytotoxic T cells)
CMV infection
Acute rejection: Mx
Steroids and immunosuppressants
Chronic graft failure: causes
Antibody and cell mediated causing fibrosis to the transplanted kidney
Chronic kidney disease: bone labs
Low vitamin D
High phosphate
Low calcium
Secondary hyperparathyroid
IgA nephropathy: features
Macroscopic haematuria in young people following upper respiratory tract infection
IgA nephropathy: associations
Alcoholic cirrhosis
Coeliac disease / dermatitis herpetiformis
HSP
Mesangial hypercellularity
Positive immunofluorescence for IgA and C3
IgA nephropathy: histology
Difference between IgA nephropathy and post-strep GN
- Post strep associated with low complement levels
- Post strep associated with proteinuria
- Post strep is weeks following infection
IgA nephropathy: treatment
Persistent proteinuria - ACEi
Renal failure - steroids
IgA nephropathy: poor prognostic factors
Male, proteinuria >2g, hypertension, hyperlipidaemia, ACE DD
Post-strep GN: features
7-14 days post infection
Haematuria, proteinuria, hypertension, oliguria
Post-strep GN: histology
Subepithelial humps caused by immune complex deposits
Granular or starry sky appearance on immunofluoresecnce
SLE: class II
Mesangial GN
Focal and segmental proliferative GN
SLE: class III
Diffuse proliferative GN (most common)
SLE: class IV
Diffuse membranous GN
SLE: class V
Sclerosing GN
SLE: class VI
Glomeruli endothelial and mesangial proliferation, wire loop appearance
Granular appearance
SLE Class IV: histology
SLE kidney disease: Mx
Steroids +/- mycophenolate or cyclophosphamide
ATN: urine sodium
Raised
ATN: urine osmolality
Low
ATN: Fractional sodium excretion
> 1%
ATN: response to fluid challenge
Poor
ATN: serum urea:creatinine ratio
normal
DM: stage 1 nephropathy
Hyper-filtration
Increase in GFR
DM: stage 2 nephropathy
Silent / latent phase
GFR elevated
DM: stage 3 nephropathy
Incipient nephropathy
Microalbuminuria
DM: stage 4 nephropathy
Overt nephropathy
Persistent proteinuria
HTN
DM: stage 5 nephropathy
ESRF