A nurse is caring for a client who has tuberculosis and is prescribed rifampin, an antitubercular drug. The nurse should instruct the client about which potential side effect of rifampin?

Here is why:

• Choice A:Monitor the client’s serum creatinine level.

This is correct because vancomycin can cause nephrotoxicity (damage to the kidneys) and serum creatinine is a marker of kidney function.A high serum creatinine level indicates impaired kidney function and may require dose adjustment or discontinuation of vancomycin.

• Choice B:Monitor the client’s serum vancomycin level.

This is correct because vancomycin has a narrow therapeutic range, meaning that there is a small difference between the effective dose and the toxic dose.Monitoring the serum vancomycin level can help to ensure that the drug is within the therapeutic range and avoid toxicity or suboptimal efficacy.

• Choice C:Infuse the drug over at least 60 minutes.

This is correct because vancomycin can cause a hypersensitivity reaction called “red man syndrome” or “red neck syndrome”, which is characterized by flushing, itching, rash, hypotension and tachycardia.

This reaction is not an allergy but a result of histamine release due to rapid infusion of vancomycin.Infusing the drug over at least 60 minutes can reduce the risk of this reaction.

• Choice D:Observe the client for signs of ototoxicity.

This is incorrect because vancomycin is not known to cause ototoxicity (damage to the ears) in humans.Ototoxicity has been reported in animal studies and in vitro studies, but not in clinical trials or case reports involving humans.

Therefore, there is no need to monitor for signs of ototoxicity such as hearing loss, tinnitus or vertigo.

A bacteriostatic agent is an agent that inhibits the growth or reproduction of bacteria, but does not kill them.

This means that the bacteria are still alive, but they cannot multiply or cause infection.

Choice A) Bactericidal is wrong because a bactericidal agent is an agent with the capability to kill bacteria.

This means that the bacteria are no longer alive or viable.

Choice C) Bacteriolytic is wrong because a bacteriolytic agent is an agent that causes the lysis or rupture of bacterial cells.

This means that the bacteria are destroyed and their contents are released.

Choice D) Bacteriophage is wrong because a bacteriophage is not an agent, but a type of virus that infects and replicates within bacteria.

This means that the bacteriophage uses the bacteria as hosts and may kill them or not depending on the type of infection.

Question 78.