A patient is allergic to penicillin.
Which class of antibiotics might they also have a cross-allergy to?

Choice A rationale
Neither heparin nor warfarin work to dissolve clots that have already formed. Instead, they work by reducing the blood’s ability to clot, preventing the formation of new clots and the growth of existing ones.
Choice B rationale

While it’s important for healthcare providers to communicate and explain treatments, it’s not necessary for the charge nurse to call the provider for an explanation in this case. The nurse should be able to explain the rationale for the medication regimen.
Choice C rationale
Heparin does not enhance the effects of warfarin. Both are anticoagulants, but they work in different ways and do not enhance each other’s effects.
Choice D rationale
Heparin will be continued until the warfarin reaches a therapeutic level. Heparin and warfarin are both anticoagulants that decrease the clotting ability of the blood and help prevent harmful clots from forming in the blood vessels. However, they work in different ways to achieve therapeutic coagulation and must be given together until therapeutic levels of anticoagulation can be achieved by warfarin alone, which usually takes about 3 days.

The correct answer is = D. Foods that contain tyramine and caffeine

Here's the rationale for each choice:

• Choice A rationale: Large amounts of water are generally safe for people taking MAOIs and can even help prevent dehydration, which can worsen some side effects.
• Choice B rationale: A diet high in salt may raise blood pressure, but it's not a specific concern related to the interaction of MAOIs with food.
• Choice C rationale: A diet high in fat doesn't directly interact with MAOIs. While a healthy diet is recommended overall, fat content isn't a primary concern.
• Choice D rationale: Foods containing tyramine and caffeine can interact with MAOIs, potentially leading to a dangerous increase in blood pressure. MAOIs inhibit the breakdown of these substances, so avoiding them is crucial.

Therefore, clients taking MAOIs should be instructed to avoid foods high in tyramine and caffeine.