You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
Retired NBME Step 2 CK Form 7 Answers
gh889
ischemia of the kidneys can cause intrinsic renal failure - w/ a BUN/Cr <15
+6
merpaperple
I was really confused by this too. There's a good explanation here: https://www.thehymedicine.com/post/step-2-ck-ccssa-nbme-form-7.
โข Patient has CKD so his BUN/Cr ratio is showing an intrinsic kidney problem
โข Patient then has furosemide added changing the ratio from 8.3 to 10.4 - this increase in ratio could suggest CKD with superimposed prerenal azotemia
โข Glomerulonephritis would show RBC casts
โข Interstitial nephritis would show WBC casts & eosinophils
โข Tubular Necrosis would show granular casts
+2
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
You must be logged in to vote!
submitted by โsaffronshawty(30)
How is this due to decreased renal blood flow when the BUN/Cr is <20 ?