Renal Uworld Flashcards
in whatMVA scenario is it okay to do bladder catheterization
on obvious pelvic fracture or blood from urethral meatus
what happens with inclusion body myositis
adult onset distal muscular weakness and atrophy
Tx for severe hypovolemic hypernatremia
isotonic 0.9% saline
rate for plasma sodium correction
1mEq/L/h
Tx for less severe hypovolemic hypernatremia
5% dextrose in 0.45% saline
cascade of decreased renal blood flow
RAAS activated. constricts efferent arteriole more than afferent to maintain GFR
what factors aggravate prerenal azotemia
decreased fluid intake, ACEI, aspirin
edema, hypoalbuminemia, elvated urine protein
nephrotic syndrome
what are the nephrotic syndromes
minimal change in kids
FSGS in adults and membranouse nephropathy in adults
Significant risk factor for membranous nephropathy
hep B
labs in Heb B related membranous nephropathy
low C3
protein excretion over 24 hours > 3g/day
all patients with epidural anesthesia require what
bladder catheterization from overflow incontinence
child with abdominal pain, lower extremity purpura, arthritis, hematuria
HSP, IgA mediated vasculitis of small vessels
arthralgias in IgA nephropathy (HSP)
knees and ankles, transient
renal involvement in HSP IgA nephropathy
microscopic hematuria, RBC casts, mild to mod proteinuria
slightly elevated Cr
what drugs cause interstitial nephritis
penicillins, cephalosporins, sulfonamides
clinical features of durg induced cephalosporins
patient will have fever, rash, arthralgias. can have darker urine (hematuria) sterile pyuria and eosinophiluria
Tx drug induced interstitial nephritis
remove causative agent
what drugs can you use for UTI in pregnancy
Nitrofurantoin
amoxicillin or augmentin
fosfomycin single dose
when to avoid TMP-SMX in pregnancy
1st and 3rd trimester
what not to Tx UTI with in pregnancy
fluoroquinolones
TMP-SMX
when to screen for aSx bacteriruia
12-16 weeks
What are common causes of early post op renal transplant dyfunction
ureteral obstruction
acute rejection
cyclosporine toxicity
vascular obstruction and ATN
Biopsy of kidney transplant 3 days later shows heavy lymphocyte infiltration and vascular involvement with swelling of intima? what is it and how to Tx?
acute rejection
IV steroids
Leukocye esterase
significant pyuria
nitrates
presence of enterobacteriaceae
expected dipstick for acute pyelonephritis
+ nitrites and leukocyte esterase
which drug is known to increase risk bladder CA
cyclophosphamide
how do you know if metabolic alkalosis is from vomiting or prior diuretic use
low urine Cl
metabolic alkalosis with high urine Cl and hypervolemia
primary hyperaldosteronism
cushing
ACTH production
pretibial myxedema
graves
edema in nephritis is caused how
decreased GFR and retention Na and water
vomiting causes what acid base
metabolic alkalosis because lose H+ and K+
how to decrease Ca oxalate stones
minimize Na intake
most common drug induced chrnoic renal failure in US
analgesic nephropathy
what happens in analgesic nephropathy
papillary necrosis and chronic tubulointerstitial nephritis
HTN, mild proteinuria, impaired concentration of urine
WBC casts are seen in
allergic interstitial nephritis
Adult with proteinuria and transient gross hematuria following acute pharyngitis
IgA nephropathy
asterixis causes
hepatic encephalopathy
uremic encephalopathy and hypercapnia
alkalotic urine
pH >5.5
RTA I
problem with H secretion into urine
infant with normal anion gap acidosis and failure to thrive
renal or GI acidosis likely
fanconi syndrome
glucosuria, aminoaciduria, phosphaturia
Renal tubular acidosis presentation in infants
growth failure
low serum bicarb
hyperCl
What drugs cause increased potassium
nonselective beta blockers ACEI, ARB digitalis cyclosporine heparin NSAIDs succinylcholine TMP-SMX
how does TMP SMX cause hyperkalemia
blocks epithelial Na channels in collecting tubules like amiloride does
can also cause small increase in Cr
how do ACEI work
dilate the efferent arterioles
signs of aspirin intoxication
tinnitus, fever and tachypnea
nausea, GI irritation
why acid base happens with aspirin OD
respiratory alkalosis
high respirations blowing CO2 off
then causes metabolic acidosis by uncoupling ox phos in mitochondira resulting in low HCO3 from high acid buildup
pH in aspirin OD
near normal from mixed acid base
resp alkalosis and metabolic acidosis
Tx aspirin OD
alkalinization or dialysis
skin rash, joint pains, myalgias and fatigue
past IV drug abuser
palpable purpura and HSM
UA show hematuria, RBC cast and proteinuria
BUN 30 Cr 2.0 C’ low and + anti HCV
mixed essential cryoglobulinemia
triad mixed essential cryoglobulinemia
palpable purpura, proteinuria, hematuria
HCV is related to what renal dysfunction
mixed essential cryoglobulinemia
pathogenesis contrast induced nephropathy
renal vasoconstriction and tubular injury
weight gain, facial edema HTN
4+ proteinuria no glucose in urine
no RBC and some fatty casts
greatest risk for?
hypercoagulability– nephrotic syndrome
nephrotic syndrome
proteinuria >4.5
hypoalbuminemia
edema
hyperlipidemia and lipiduria
why does nephrotic syndrome cause hypercoagulability
increased urinary loss antithrombin 3, altered levels protein C and S, increased platelet aggregation, hyperfibrinogenemia form increased hepatic synthesis and impaired fibrinolysis
complications nephrotic syndrome
protein malnutrition, iron resistent microcytic hypochromic anemia, increased infections
vit D deficiency
low complement levels with nephritic syndrome
postinfectious, lupus, MPGN or mixed cryoglobulinemia with HepC
What are depositied in mixed cryoglobulinemia
IC of IgM Ab and IgG anti Hep C Ab
Dx of mixed cryoglobulinemia
viral serology
Tx mixed cryoglobulinemia
plasmapheresis to remove cryoglobulins and immunosuppressants
ADAMTS13
thrombotic thrombocytopenia purpura
fever, microangiopathic hemolytic anemia, renal fialure and neuro signs.
what to check for in antiphospholipid Ab syndrome
anti cardiolipin Ab
clinical assocations with minimal change disease
NSAIDs and lymphoma
clinical associations with FSGS
african american and hispanics
obesity
HIV
heroin use
clinical associations with membranous nephropathy
adenocarcinoma
NSAIDs
hep B
SLE
clinical associations with Membranoproliferative glomerulonephritis
Hep B and C
lipodystrophy
clinical associations with IgA nephropathy
URI
Hepatorenal syndrome
severe liver cirrhosis can increase NO and cause systemic vasodilation causeing decreased vascular resistance and BP which will cause renal hypoperfusion which then activates RAAS
patients do not respond to fluids or removal of diuretics
Tx hepatorenal syndrome
splanchnic vasoconstrictores like midodrine, octreotide and norepi
FeNa
hepatorenal syndrome
patient came into hospital acidemic, 3 days later now mildy alkalemic
loop diuretic
electrolyte abnormality in addisons
hyponatremia
hyperkalemia