An intravenous catheter is removed from an 83-year-old male hospitalized with cancer and sent to the laboratory for culture. The tip is rolled across the surface of a sheep blood agar
At 24 hours incubation, 20 colonies of white, gamma-hemolytic, gram-positive cocci are isolated. The organism proved to be catalase positive and tube coagulase negative. This organism
A) is a skin contaminant.
B) is considered a critical value and should be reported STAT.
C) indicates a catheter-related infection.
D) cannot be assessed without the results of a blood culture drawn at the same time.
D
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On a balance that is sensitive to 6 mg, what is the smallest quantity that can be weighed with a potential error of 5 percent or less?
80 mg 100 mg 120 mg 160 mg