A client diagnosed with strep throat requires antibiotics for treatment. With an allergy to penicillin, the nurse understands which medication should be avoided due to cross-sensitivity with penicillin medications?
Macrolides
Antiretrovirals
Antimalarials
Cephalosporins
The Correct Answer is D
A. Macrolides: Macrolides, such as azithromycin or erythromycin, are often used as alternatives in clients with a penicillin allergy, as they do not have a beta-lactam ring and generally do not cause cross-reactivity.
B. Antiretrovirals: Antiretrovirals are used for treating HIV/AIDS and are unrelated to penicillin antibiotics, with no cross-sensitivity concerns.
C. Antimalarials: Antimalarial drugs are used to treat malaria and are not related to penicillin antibiotics, so they would not be a concern for cross-sensitivity.
D. Cephalosporins: Cephalosporins have a beta-lactam structure similar to penicillins, which can sometimes cause cross-reactivity in clients with a penicillin allergy. However, the risk is lower with newer generations.
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Correct Answer is D
Explanation
A. Regular sun exposure is needed to maximize drug efficacy: This is incorrect; in fact, doxycycline can cause photosensitivity, and sun exposure should be minimized.
B. Avoid water while taking this medication: Water should be taken with doxycycline to help prevent esophageal irritation.
C. Take this medication with antacids to relieve gastrointestinal symptoms: Antacids can also interfere with doxycycline absorption, so they should be avoided.
D. Avoid dairy products when taking this medication: Dairy products can bind to doxycycline and reduce its absorption in the gastrointestinal tract, which decreases its effectiveness. The client should avoid dairy when taking the medication.
Correct Answer is A
Explanation
A. Alcohol consumption: Metronidazole has a disulfiram-like reaction with alcohol, which can cause severe nausea, vomiting, flushing, and tachycardia. Clients should avoid alcohol during and for at least 48 hours after the completion of metronidazole therapy.
B. Tyramine-based foods: Avoiding tyramine-rich foods is important with certain MAOIs due to the risk of hypertensive crisis, not with metronidazole.
C. Apple Juice: There is no significant interaction between metronidazole and apple juice.
D. Soy beans: Soybeans do not have an interaction with metronidazole.