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Old 09-25-2010
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Liver Most common cause of SBP?

what is the most common cause of spontaneous bacterial peritonitis??
i think goljan mentioned it but i forget (and i think different sources say different bacteria), i know its asked alot on step1. thanks
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Old 09-26-2010
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I guess its E. Coli ...
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Old 09-26-2010
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Traditionally, three fourths of spontaneous bacterial peritonitis infections have been caused by aerobic gram-negative organisms (50% of these being Escherichia coli), with one fourth of these infections are due to aerobic gram-positive organisms (19% streptococcal species). E coli is demonstrated in the image below.

Source : http://emedicine.medscape.com/article/789105-overview
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Old 09-26-2010
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it is caused by both gm negative ( E.coli) & gm positive (strepto. pneumonei)
so always use 3rd generation cephalosporins to treat....
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If it's a child with nephrotic syndrome, it's usually Strep pneumoniae. If it's an adult with cirrhosis, it's usually E. coli.
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Old 10-26-2011
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[QUOTE=Androide89;16525]what is the most common cause of spontaneous bacterial peritonitis??
E.COLI 50%
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