A 78-year-old male develops osteomyelitis after hip replacement surgery. After four weeks of antibiotics, he is sent home with two more weeks of intravenous antibiotics. On week 5, he develops a fever, and three sets of blood cultures are drawn. At 24 hours, the organism observed in the image provided was present in four of six bottles.
Source: CDC and Dr. W. Kaplan
The organism grows as a pinpoint haze on sheep blood and chocolate agars but not on
MacConkey and reducible blood agars. Infection with this organism was probably due to
A) antibiotic use.
B) the presence of an artificial hip.
C) a urinary catheter.
D) the presence of an IV catheter.
Correct Answer:
Verified
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