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Kaplan Qbank USMLE



Author14 Posts
  #1

32 y/o male with crohn disease, underwent a small bowel resection 2 months ago. now presents with recurrent abdominal pain. IVP shows kidney stone. What is the culprit ?

A. Calcium
B. Urate
C. Oxalate
D. Cystine
E. Struvite.

  #2

oxalate

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IM resident

  #3

B. Urate

  #4

C

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  #5

Yup, oxalate.

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  #6

any explanation ppl????????

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-Anonymous

  #7

These r Dr. ARJ's words: Short bowel syndrome, which may result from surgery in the small intestine, is marked by the inability of the intestines to absorb fat and nutrients properly (malabsorption). In such cases, calcium may bind to unabsorbed fat instead of to oxalates. This leaves excess oxalate, which is absorbed by the intestine and excreted into the kidney

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  #8

ARJ rules!!!!!!!!!

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"Where there is a will there is a way!"
-Anonymous

  #9

yep its oxalate and explanation is same as above; lack of calcium to chelate exalate as calcium is lost as soaps with fat

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  #10

Yeah Oxalate is the answer

  #11

good thanks...

so...in normal gi...calcium binds oxalste...it goes out in bowel movements(like feces) ^^


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  #12

C. Oxalate

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  #13

This is how the new (has been on market for a few months) diet pill, Alli, works. It causes fat malabsorption and one of the side effects is it may cause kidney stone.

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Never give up!!

  #14

hi, pls look in kaplan IM nephrology - 257 page if i'm correct .
it says,uric acid stones in crohn's disease.

which one is correctconfused?

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