Nephrology Flashcards
tests to get in AKI
U/A
Protein/Cr ratio
Ultrasound
Best: biopsy - NEVER CORRECT
U/A in AKI
casts, hints, never definitive
Protein/Cr ratio in AKI
nephrotic syndrome
Ultrasound in AKI
hydro
what the nitrates in urine means
infection
what leukocyte esterase in urine means
infection
what RBCs in urine mean
hematuria
what no RBC’s but positive blood in urine mean
rhabdo (check myoglobin)
what eosinophils in urine mean
AIN
what RBC casts mean
glomerulonephritis
what WBC casts mean
pyelo
what muddy brown casts mean
ATN
what waxy urine casts mean
CKD
what hyaline casts in urine mean
nothing
post-renal failure path
obstruction: stone, cancer, BPH, neurogenic bladder
post-renal failure pt
abdominal pain and renal failure
distended or palpable bladder
post-renal failure dx
Foley catheter = large residuals
u/s = hydronephrosis
post-renal failure tx
catheter (relieves bladder outlet)
nephrostomy (relieves ureteral obstruction)
ATN path
tubules slough off, die
toxins: contrast, rhabdo
low flow: shock kidney
ATN pt
one of the above pathologies
ATN dx
u/a = waxy brown casts
ATN tx
oliguric phase: dialysis
polyuric phase: IVF
ATN ppx
vigorous hydration, reduce time in contact with toxin
indications for dialysis
AEIOU Acidosis Electrolytes (Na/K) Ingestion (toxins) Overload (CHF, edema) Uremia (pericarditis)
chronic kidney disease - hyperparathyroidism
cinacalcet
ckd - hyperphosphatemia
sevelamer
ckd - HTN
CCB
ACE-I
BB
Clonidine
ckd - vit D
Ca + vit D3
ckd - dialysis
hemodialysis TiW
peritoneal qHS
nephrotic syndrome
HTN
nephrotic range proteinuria
edema
hypercholesterolemia
nephritic syndrome
hematuria
HTN
oliguria
treatment of mild HypoNa
po
treatment of moderate HypoNa
IVF = NS
treatment of severe HypoNa
3% NaCl
treatment of mild hyperNa
po
treatment of moderate hyperNa
IVF = NS
treatment of severe HyperNa
IV = D5W
symptoms of mild hyper/hypoNa
asymptomatic
symptoms of moderate hyper/hypoNa
in between
symptoms of severe hyper/hypoNa
coma
seizures
sodium correction
no faster than 0.25mEq/hr
except if seizing or in a coma
osmotic demyelination syndrome path
rapid correction of sodium
osmotic demyelination syndrome pt
spastic quadriplegic (irreversible)
osmotic demyelination syndrome
central pontine myelinolysis
osmotic demyelination syndrome dx
clinical, sodium rises too fast
osmotic demyelination syndrome tx
none, prevention only
work-up for sodium
serum osm
urine Na
urine Osm
hypertonic serum osm
EtOH, glucose
isotonic serum osm
fats and proteins
hypotonic serum osm
continue
urine Na
surrogate for aldosterone
urine osm
surrogate for ADH
if hypervolemic + sodium dysfunction
give diuresis
if hypovolemic + sodium dysfunction
give fluids
if euvolemic + sodium dysfunction
TSH
cortisol
renal electrolytes
SIADH is dx of exclusion
SIADH path
hypothyroidism - TSH looks like ADH
lung lesions (small cell, pneumonia)
brain lesions
water, but not all, is retained -> decreased tonicity
SIADH pt
hyponatremia
SIADH dx
diagnosis of exclusion
U Na should be high (aldo off)
U osm should be high (ADH on)
SIADH tx
volume restrict
correct underlying disorder
symptomatic hyperCa pt
stones, bones, groans, and moans
symptomatic hyperCa dx
calcium and albumin
symptomatic hyperCa tx
IVF
bisphosphonates
calcitonin adjunct
hyperparathyroidism path
primary: adenoma
secondary: early CKD, physiologic response
tertiary: multiple adenomas from secondary