A nurse is teaching a client who is prescribed doxycycline (Vibramycin) for Lyme disease. The nurse instructs the client to avoid exposure to sunlight while taking this drug because it may cause photosensitivity.
Which statement by the client indicates understanding of this instruction?
“I will wear sunscreen and protective clothing when I go outside.”
“I will take the drug at night before I go to bed.”
“I will drink plenty of fluids to prevent dehydration.”
“I will stop taking the drug if I develop a rash."
The Correct Answer is A
This statement indicates that the client understands that doxycycline can cause photosensitivity, which is a heightened skin sensitivity or unusual reaction when exposed to UV radiation from the sun or a tanning bed. Photosensitivity can cause damage at the DNA level, painful sunburn-like erythema, blistering, lichenoid eruptions, and photo-onycholysis. The client should avoid excessive sun exposure and use photoprotection methods against both UVB and UVA wavelengths.
Choice B is wrong because taking the drug at night before bed does not prevent photosensitivity during the day. The drug or its metabolites can remain in the skin for several days after ingestion.
Choice C is wrong because drinking plenty of fluids to prevent dehydration is not related to photosensitivity.
Dehydration can occur due to other causes such as vomiting, diarrhea, fever, or excessive sweating.
Choice D is wrong because stopping the drug if a rash develops is not advisable.
The rash could be a sign of photosensitivity or an allergic reaction, and the client should consult their doctor before discontinuing the medication.
Stopping the drug abruptly could also lead to treatment failure or bacterial resistance.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The patient should avoid alcohol while taking these drugs because alcohol can increase the risk of liver toxicity.These drugs are metabolized by the liver and can cause hepatotoxicity, especially isoniazid and pyrazinamide.The nurse should monitor the patient’s liver function tests and advise the patient to report any signs of liver damage, such as dark urine, fatigue, or jaundice.
Choice B is wrong because Grapefruit juice is wrong because grapefruit juice does not interact with these drugs.
Grapefruit juice can affect the metabolism of some other drugs, such as statins, calcium channel blockers, or cyclosporine, but not antitubercular drugs.
Choice C is wrong because Milk is wrong because milk does not interact with these drugs.
Milk can reduce the absorption of some other drugs, such as tetracyclines or fluoroquinolones, but not antitubercular drugs.
Choice D is wrong because Caffeine is wrong because caffeine does not interact with these drugs.
Caffeine can increase the effects of some other drugs, such as theophylline or clozapine, but not antitubercular drugs.
Correct Answer is A
Explanation
The nurse should avoid administering macrolides to this client because they have a history of allergic reactions to penicillins, cephalosporins, sulfonamides, and fluoroquinolones.Macrolides are a class of antibiotics that have a similar structure and mechanism of action to penicillins and cephalosporins.Therefore, there is a risk of cross-reactivity and hypersensitivity reactions between these antibiotics.
Choice B is wrong because Tetracyclines is wrong because tetracyclines are a class of antibiotics that have a different structure and mechanism of action from penicillins, cephalosporins, sulfonamides, and fluoroquinolones.They are not likely to cause cross-reactivity or hypersensitivity reactions in this client.
Choice C is wrong because Aminoglycosides is wrong because aminoglycosides are a class of antibiotics that have a different structure and mechanism of action from penicillins, cephalosporins, sulfonamides, and fluoroquinolones.They are not likely to cause cross-reactivity or hypersensitivity reactions in this client.
Choice D is wrong because Glycopeptides is wrong because glycopeptides are a class of antibiotics that have a different structure and mechanism of action from penicillins, cephalosporins, sulfonamides, and fluoroquinolones.They are not likely to cause cross-reactivity or hypersensitivity reactions in this client.
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