Multiple Choice
Separate venipunctures were performed to collect three sets of blood cultures from a patient with an artificial heart valve.The first and third sets grew a gram-positive pleomorphic rod in 1 of 2 bottles while the second set had no growth in either bottle.What is the most likely explanation for these findings?
A) The patient probably has an infection with Clostridium spp.
B) The blood cultures were contaminated with skin flora.
C) The blood cultures were probably contaminated in the laboratory.
D) The patient probably has an infection with Bacillus spp.
Correct Answer:

Verified
Correct Answer:
Verified
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