A nurse is administering tetracycline, a broad-spectrum antibiotic, to a patient who has acne vulgaris.
The nurse should monitor the patient for which of the following adverse effects of this medication? (Select all that apply.)
Photosensitivity
Tooth discoloration
Hepatic impairment
Superinfection
Bone marrow suppression.
Correct Answer : A,D
Tetracycline can cause photosensitivity, which means increased sensitivity to sunlight and risk of sunburn. It can also cause superinfection, which means overgrowth of resistant bacteria or fungi in the mouth, intestines, or vagina.
Choice B is wrong because tetracycline can cause tooth discoloration in children under 8 years old, not in adults.
Choice C is wrong because tetracycline can cause hepatic impairment only in patients with preexisting liver disease or who take high doses for a long time.
Choice E is wrong because tetracycline can cause bone marrow suppression only in patients with preexisting blood disorders or who take high doses for a long time.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["D","E"]
Explanation
A microbe acquires antibiotic resistance by transferring DNA coding to other bacteria or by spontaneous mutation in the microbial genome.
These genetic changes allow the microbe to survive the effects of the antibiotic and pass on the resistance to its offspring.
ChoiceAis wrong because the host does not develop medication resistance, but the microbe does.
ChoiceBis wrong because the minimum bactericidal concentration (MBC) is the lowest concentration of an antibiotic needed to kill 99.9% of bacteria, not a mechanism of resistance.
ChoiceCis wrong because incorrect dosing does not cause ribosome mutations, but may promote the emergence of drug-resistant microbes by exposing them to suboptimal levels of the antibiotic.
Correct Answer is B
Explanation
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.
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