USMLE Forum Archives - USMLE Step 1 - bp23
bp23
babbu5508 - 03-22-11 20:15
If the patient instead was found to have a struvite stone, which of the following would be a likely associated finding?
/ A. Acidic pH of the urine
/ B. E. coli
/ C. EIevated uric acid levels
/ D. Low urinary ammonium levels
/ E. Urinary tract infection
babbu5508 - 03-22-11 20:15
If the patient instead was found to have a struvite stone, which of the following would be a likely associated finding?
/ A. Acidic pH of the urine
/ B. E. coli
/ C. EIevated uric acid levels
/ D. Low urinary ammonium levels
/ E. Urinary tract infection
The correct answer and explanation will be available after you answer.
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#2
Re: bp23
babbu5508 - 03-23-11 03:09 The correct answer is E. Struvite stones are composed of magnesium ammonium phosphate (MAP). They are found most commonly in women, and may recur rapidly
#3
Re: bp23 sudha2015 - 03-24-11 04:57 If the patient instead was found to have a struvite stone, which of the following would be a likely associated finding
E
#9
Re: bp23 bobby12 - 01-26-12 20:14 Two conditions must coexist for the formation of struvite calculi. These are (1) alkaline urine (pH >7.2) and (2) the presence of ammonia in the urine. This leads to magnesium ammonium phosphate and carbonate apatite crystallization. The conversions of urea to ammonia, ammonia to ammonium, and acidification from carbon dioxide.
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