Which of the following should the nurse include when providing dietary teaching for the patient receiving warfarin (Coumadin) therapy?

Correct Answer: A

Rationale: The nurse should include the instruction to avoid drinking large amounts of green tea when providing dietary teaching for a patient receiving warfarin therapy. Green tea is high in vitamin K, which can interfere with the effectiveness of warfarin, an anticoagulant medication. Maintaining a consistent intake of vitamin K is important for patients on warfarin in order to keep their INR (International Normalized Ratio) levels stable. It is not necessary to avoid all sources of vitamin K, but rather to keep intake consistent and moderate. Drinking large amounts of green tea, which is high in vitamin K, can potentially impact the patient's INR levels and increase the risk of bleeding or clotting issues.

Correct Answer: D

Rationale: Coated aspirin refers to enteric-coated aspirin, which is a type of aspirin that has a special coating designed to help protect the stomach lining and reduce gastrointestinal upset. Unlike regular aspirin, enteric-coated aspirin is less likely to cause irritation to the stomach and therefore may be a better option for patients experiencing gastrointestinal issues. Switching to coated aspirin can help alleviate the patient's symptoms while still providing the antiplatelet benefits needed for secondary prevention of myocardial infarction. It is important for the nurse to communicate with the provider to discuss this alternative option and ensure the patient's safety and well-being.

Correct Answer: B

Rationale: Morphine, an opioid, improves chronic diarrhea by increasing intestinal circular muscle tone . Opioids slow GI motility via μ-receptors, enhancing tone and reducing peristalsis. Option , improved motility, opposes this. Options , , and (E) weaken continence or motility, not fitting. This constipating effect explains the improvement, a common opioid side effect.

Correct Answer: C

Rationale: CNS stimulants (e.g., methylphenidate) boost focus in ADHD via dopamine/norepinephrine-per standard-unlike depressants (sedate), parasympathomimetics (cholinergic), or sympathomimetics (broader). Stimulants are traditional, per treatment.

Correct Answer: D

Rationale: Volume of distribution (Vd) is a pharmacokinetic parameter reflecting the extent a drug distributes into body tissues relative to plasma. It's not always a real volume, as it can exceed total body water (e.g., for lipophilic drugs), making that statement false. The second option is nonsensical due to unclear phrasing, but likely intends a ratio that's incorrectly stated. The third option reverses the correct formula and is also gibberish. The accurate definition is the amount of drug in the body divided by its concentration in plasma (Vd = Dose / Cp), which quantifies how widely a drug disperses. This isn't about area under the curve (AUC) or dose, as some might confuse with clearance. Understanding Vd is crucial for dosing adjustments, especially for drugs with high tissue affinity, where a large Vd indicates extensive distribution beyond plasma, impacting therapeutic strategies.