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NBME 20 Answers

nbme20/Block 1/Question#41

A 45-year-old man has fever, chills, dysuria, and a ...

Escherichia coli

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submitted by hayayah(399),

Prostatitis is characterized by dysuria, frequency, urgency, low back pain. Warm, tender, enlarged prostate.

Acute bacterial prostatitis—in older men most common bacterium is E. coli.

ergogenic22  In young men it could be chlamydia but the question stem makes no mention of sexual activity, so it is e. coli +3  
charcot_bouchard  First this guy isnt older! He may incite Daddy issue but not older. At this age people tend to be more monogamous so E Coli the more likely answer. But again cont NBME 20 trend this one was pretty vague too. +  
monkey  They classify at 35 year old (<35 = Chlamydia or Neisseria and > 35 = E.coli) +