Which statement about food and drug interactions is true?
Patient preference is the food and drug interaction of most concern.
Foods alter drug absorption and metabolism but not drug action.
Some foods, such as grapefruit, can interact with CYP isoenzymes and alter drug metabolism.
All medications are best absorbed with food.
The Correct Answer is C
Choice A reason: Patient preference is not a primary concern in food-drug interactions; physiological effects are. Grapefruit’s impact on metabolism is significant, so this is incorrect for the true statement.
Choice B reason: Foods can alter absorption and metabolism, but some also affect drug action (e.g., tyramine with MAOIs). This statement is incomplete, making it incorrect compared to grapefruit’s specific effect.
Choice C reason: Grapefruit inhibits CYP isoenzymes, altering drug metabolism and increasing drug levels. This is a well-documented interaction, making it the correct true statement about food-drug interactions.
Choice D reason: Not all medications are best absorbed with food; some require empty stomachs. Grapefruit’s metabolic interaction is more accurate, so this is incorrect for the true statement.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Metoprolol (beta-blocker) and furosemide (loop diuretic) are commonly used in heart failure. Furosemide may lower potassium, counteracting hyperkalemia (5.5 mEq/L), and metoprolol doesn’t significantly affect potassium. This combination poses less risk for hyperkalemia exacerbation, making it less concerning than potassium-sparing combinations.
Choice B reason: Furosemide promotes potassium excretion, potentially reducing hyperkalemia (5.5 mEq/L), while enalapril (ACE inhibitor) may increase potassium. However, furosemide’s effect often offsets enalapril’s, making this combination less likely to worsen hyperkalemia significantly compared to two potassium-sparing drugs, so this choice is less critical.
Choice C reason: Captopril (ACE inhibitor) and spironolactone (potassium-sparing diuretic) both increase potassium levels by reducing aldosterone activity, exacerbating hyperkalemia (5.5 mEq/L). In heart failure, this combination risks severe hyperkalemia, causing arrhythmias, making it the most concerning interaction requiring close monitoring or adjustment.
Choice D reason: Amlodipine (calcium channel blocker) and propranolol (beta-blocker) primarily affect blood pressure and heart rate, not potassium levels. Their interaction may cause bradycardia or hypotension but doesn’t worsen hyperkalemia (5.5 mEq/L), making this combination less concerning for the patient’s current electrolyte status.
Correct Answer is ["C","E"]
Explanation
Choice A reason: Verapamil is not used for preterm labor; calcium channel blockers like nifedipine are preferred. Verapamil targets cardiovascular conditions, so this is incorrect for its therapeutic use.
Choice B reason: Verapamil is contraindicated in heart block, as it slows conduction. It is used for hypertension and dysrhythmias, not conduction blocks, so this is incorrect.
Choice C reason: Verapamil is a channel blocker used for essential hypertension, effectively reducing blood pressure by relaxing vessels. This is a standard use, making it a correct choice.
Choice D reason: Hypocalcemia is not treated with verapamil; it may worsen with calcium channel blockers. Cardiovascular indications are primary, so this is incorrect.
Choice E reason: Verapamil is used for cardiac dysrhythmias, such as supraventricular tachycardia, by slowing heart rate. This is a recognized indication, making it a correct choice.
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