Renal Flashcards
most common nephrotic syndrome in children
minimal change disease
Mx of minimal change
steroids
IgA nephropathy
Bergers sydnrome
Nephritic syndrome 1-2 days after a URTI
Post strep glomerulonephritis
Nephritic syndrome 1-2 weeks after URTI
goodpastures
Anti GBM antibodies against type 4 collagen
Px: heaemoptysis (lung haemorrhage) + nephritic syndrome
Alports
defect in gene for type 4 collagen
Px: renal failure, hearing loss, retinitis pigmentosa
renal biopsy in alports
splitting of the lamina dense shows a basket weave appearance
haemolytic uremic syndrome
caused by shiga toxin ( e coli 0157 / shigella)
AKI + thrombocytopenia + haemolytic anaemia)
henoch schlonhein purpura
abdominal pain
arthalgia
non-blanching rash
Granulomatosis with polyangiitis / wegener’s
URT = saddle shaped nose deformity, epistaxis
LRT = haemoptysis
Renal failure
cANCA!!!!!!
Churg strauss (eosinophilic granulomatosis and polyangitis)
Asthma
Rash
Renal failure
pANCA!!!!!!!
pain radiating from loin to groin
renal stones
what drugs cause AKI
diuretics, aminoglycosides, metformin, NSAIDs, lithium, ACEis, ARBS, digoxin
fever, uncontrollable shaking, flank/abdominal tenderness
gas in the renal parenchyma
pyelonephritis
antibiotics of choice for UTI in pregnancy
nitrofurantoin
acute tubular necrosis is caused by:
drugs (aminoglycosides, NSAIDs), radiocontrast
acute interstitial nephritis is caused by:
hypersensitivity, rheumatological conditions
Mx of pyelonephritis
IV gentamicin / ciprofloxacin
muddy brown casts
acute tubular necrosis
indications of acute dialysis
AEIOU
acidosis (<7.2)
electrolyte abnormalities (refractory hyperkalaemia)
intoxication e.g. alcohol, lithium
overload (fluid)
uremia (encephalopathy)
chronic reflux nephropathy
kidney scarring resulting from vesico-ureteric reflux
chronic UTIs in childhood
scarring and reduced size in one kidney
raised creatinine and hypertension
gold standard Dx for kidney stones
CT KUB
pathophis of type 1,2,4 renal tubular acidosis
(Distal) Type 1 = cannot excrete H+
hypokalemia, severe acidosis
(Proximal) Type 2 = cannot absorb HCO3-
hypokalemia, less acidosis
Type 4 = reduced aldosterone function
hyperkalemia, no significant acidosis
fanconi syndrome
Fanconi Sydnrome = proximal tubule dysfunction leading to poor electrolyte absorption
hypokalemia, acidosis
proteinuria, glycosuria
persisten hypertension not responding to ACEi
renal artery stenosis
more common in older people
testicular cancer markers (3)
AFP + pALP non-seminoma
bHCG raised in non-seminona
diagnosis of acute tubular necrosis (x2)
muddy brown casts in urinalysis
fraction of excreted sodium >3%
two types of ATN and causes
toxic: drugs e.g. aminoglycosides, bisphosphonates, myoglobin
ischaemic: renal artery stenosis, hypoperfusion
more common form of PKD
autosomal dominant
assoc with ADPKD
berry aneurysms in the circle of willis
hypertension
urinary sx
liver cysts
abdominal mass
combo of immunosuppression after kidney transplant
tacrolimus
mycophenalate mofetil
prednisolone
side effects of MMF
gastro, bone marrow suppression
when is radiofrequency ablation done in renal cancer
non surgical stage 1/2
when is partial nephrectomy done
stage 1
when is radical nephrectomy done
stage 2/3
when are immunomodulatory drugs given in renal cancer
stage 4 (metastasis)
ideal dialysate (urea, cret, bicarb, K)
0 urea
0 creat
high bicarb
low K
struvite stones
chronic UTIS
calcium oxalate stones
fat malabsorption (crohns, pancreatic insufficiency)
calcium phosphate stones
hypercalcemia, hyperparathyroidism
cystine
cystinuria
autosomal recessive
uric acid stones
hyperuricemia (gout)
symptoms of acute tubulointerstitial nephritis
fever
eosinophilia
rash
causes of renal papillary necrosis
sickle cell anaemia
diabetes mellitus
acute pyelonephritis
chronic paracetamol use
indications of calcium gluconate vs insulin&dextrose
calcium gluconate is used for cardioprotection in hyperkalemia
insulin and dextrose used to lower potassium
need both!!!!!!
pain relief for kidney stones 1st line
IM diclofenac
Potter syndrome
Oligohydramnios and resultant pulmonary hypoplasia with in utero renal failure
inheritance of Alports
X linked recessive (most)
inheritance of Von Hippel Lindau
autosomal dominant
medullary sponge kidney
cause, Px, Dx
congenital
cystic dilatation of the collecting tubules in the kidney
increased risk of UTIs and kidney stones
grape-like appearance on ultrasound
irregular testicular mass lesion
bHCG and AFP are not elevated
what could it. be?
testicular seminoma
what does albumin:creatinine test for?
who to test
protein in the urine
test all people with diabetes + everyone without diabetes but have GFR<60
best initial screening investigation for renal hypertension
abdo duplex ultrasound
management of kidney stones >2cm
percutaneous ureterolithotomy
management of kidney stones <0.5cm
paracetamol
drink water
stone passes spontaneously within 1-3 weeks
management of stones <2cm
extracorporeal shock wave lithotripsy
management of cryptorchid testis
orchidectomy (remove it)
square envelope shaped crystals are caused by…
+ what vitamin increases the risk of this
calcium oxalate
vitamin c
how to calculate osmolality
Serum osmolality is 2 x(Na) + Urea + glucose
acute vs chronic rejection of kidney transplant
acute <6 months. fever, graft pain, sudden rise in creatinine
chronic >6months. gradual creatinine rise, fibrosis and tubular atrophy
most common cause of peritonitis from peritoneal dialysis
staph epidermidis
what should be prescribed to reduce progression of CKD caused by ADPKD
how does it work
tolvaptan
reduces cyst formation and renal insufficiency
Urinalysis in interstitial nephritis x2
Eosinophilia
White cell casts
Recommended potassium intake for normokalemic pt
1 mmol/ kg
What level of K+ should treatment be started immediately? What to do if not reached this threshold?
> 6.5 start treatment
Less than : do ECG
First line test for HUS
Blood film
What cancer is increased risk after a renal transplant
Squamous cell carcinoma of the skin
Normal anion gap
8-14
Managing renal stones in three ways
Less than 5mm conservative
Less than 2cm shock wave lithotripsy
2cm more nephrolithotomy
What medication can help to reduce kidney stones caused by hypercalciuria
Indapamide (thiazide like diuretic )
Increases calcium reabsorption so less excreted in urinary tract
Most common viral infection in solid organ transplants and mx
Cytomegalovirus
Ganciclovir
criteria to be on renal transplant waiting list
expected to be alive in 5 years
needing dialysis in 6 months
3 drugs to treat proteinuria
- ACEIs
- SGLT2 inhibitors
- finerenone (mineralocorticoid receptor antagonist)
most common site for developing prostate cancer
peripheral zone of the prostate
Loop diuretic moa
Blocks Na K 2Cl co transporter in thick ascending loop of henle
2 examples of loop diuretics
Furosemide
Bumetanide
4 side effects of loop diuretics
Hypokalemia
Hypocalcemia
Kidney stones
Gout
1 example of thiazide diuretic
Bendroflumethiazide
2 examples of thiazide like diuretics
Indapamide
Chlorthalidone
Moa of thiazide and thiazide like diuretics
Blocks Na Cl cotransporter in DCT
4 side effects of thiazide like diuretics
Hypokalemia
Hypercalcemia
High glucose
Gout
2 MOAS of potassium sparing diuretics
Inhibits aldosterone (spironolactone, eplenerone)
Inhibits ENAC (amiloride) so increased excretion of Na
2 side effects of potassium sparing diuretics
Hyperkalemia
Gynacomastia
Where do potassium sparing diuretics work
DCT and collecting duct
Membranous nephropathy aetiology
IgG complex deposition in the sub epithelial space
Membranous nephropathy investigations
Light : ball and spike pattern with silver stain
Electron : sub epithelial deposits
Immuno: diffuse IgG uptake
focal segmental glomerulosclerosis cause
dead podocytes fall off causing the basement membrane and GBM to stick to each other = SCARRING
FSGS investigations
light: scarring of glomeruli
electron: effacement of podocytes
IF: nothing
IGA nephropathy investigations
IgA deposits, mesangial proliferation
POst strep GN investigation
light:
electron: electron dense “humps” (immune complexes)
IF: IgG and C3 deposits