Renal: 12.5: UTIs 12.6: Nephrolithiasis Flashcards
What is pyuria?
pus in the urine
What are the dipstick findings in cystitis?
positive leukocyte esterase and nitrites
What are the UA findings in cystitis?
cloudy urine w/ >10 WBCs/high powered field
What is the culture finding in cystitis?
> 100,000 colony forming units
What bug creates an alkaline urine with an ammonia scent in cystitis?
Proteus mirabilis
What is sterile pyuria?
pyuria with a negative urine culture –> suggests urethritis
What causes sterile pyuria aka urethritis?
Neisseria or Chlamydia
What are the classic path. findings of chronic pyelo?
interstitial fibrosis with cortical scarring and blunted calyces; thyroid-looking tubules with eos
What is the most common type of kidney stone?
calcium oxalate/phosphate
What kind of kidney stones can be seen in Crohns disease?
calcium oxalate/phosphate
What kind of stone is created by urease-positive organisms (ie Proteus or Klebsiella)?
ammonium magnesium phosphate (staghorn calculus)
What is the most common type of kidney stone seen in pts with gout?
a uric acid stone
Which kidney stone is radiolucent?
uric acid stones
What kind of kidney stones are seen in cystinuria?
cysteine stones
Name 2 kidney stones that can cause staghorn calculi.
adults = ammonium magnesium phosphate children = cysteine stones
