NBME Free 120 Escherichia coli (NBME Answers)

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free120/Block 1/Question#30 (reveal difficulty score)
A 16-year-old boy is brought to the physician ...
Escherichia coli 🔍 / 📺 / 🌳 / 📖
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submitted by ∗bwdc(697)

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While E coli is normal gut flora, your body would prefer it stay intraluminal.

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tallerthanmymom Just remember that E.Coli and Bacteriodes Fragilis (sp?) are the 2 main gutys that cause intraperitoneal infections from the gut. +11

bharatpillai Why not citrobacter though? +10

mamed Common organisms involved in gangrenous and perforated appendicitis include Escherichia coli, Peptostreptococcus, Bacteroides fragilis, and Pseudomonas species (UpToDate) +10

athenathefirst Nobody mentioned why it's not citrobacter. It's also an inhabitant of the intestinal flora. What an annoying quetion. +

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submitted by ∗hello(429)

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The patient developed peritonitis due to a perforated appendix. Peritonitis is an intra-abdominal infection.

The most common intra-abdominal microbes to cause intra-abdominal infections are Bacteroides and E. coli.

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