NCLEX-PN
NCLEX PN Exam Cram Questions
Extract:
Question 1 of 5
An infection in a central venous access device is not eliminated by giving antibiotics through the catheter. How might bacterial glycocalyx contribute to this?
Correct Answer: A
Rationale: Bacterial glycocalyx is a viscous polysaccharide or polypeptide slime that covers microbes. It plays a significant role in protecting bacteria by enhancing adherence to surfaces, resisting phagocytic engulfment by white blood cells, and preventing antibiotics from contacting the microbe.
Choice A is correct because glycocalyx shields the bacteria from both antibiotics and the immune system, allowing the infection to persist.
Choices B, C, and D are incorrect because glycocalyx does not neutralize antibiotics, compete for binding sites with antibiotics, or provide nutrients for microbial growth.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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