ATI RN
ATI Pharmacology Proctored Exam 2019
1. A client has a new prescription for Nitrofurantoin. Which of the following instructions should be included?
- A. Take this medication with food.
- B. Avoid dairy products while taking this medication.
- C. Take this medication at bedtime.
- D. Increase your intake of vitamin C.
Correct answer: A
Rationale: Nitrofurantoin should be taken with food to enhance absorption and reduce gastrointestinal side effects. Taking it with a meal or a snack can help minimize stomach upset. Instructing the client to take the medication with food ensures optimal effectiveness and tolerability of the drug. Choice B is incorrect because there is no specific interaction between Nitrofurantoin and dairy products. Choice C is incorrect as there is no requirement to take Nitrofurantoin at bedtime. Choice D is also incorrect as increasing vitamin C intake is not necessary or relevant to taking Nitrofurantoin.
2. What is levothyroxine's pharmacologic classification?
- A. Thyroid Preparations
- B. Metabolic Inhibitors
- C. Analgesic
- D. Loop Diuretic
Correct answer: A
Rationale: Levothyroxine is classified as a thyroid preparation because it is a synthetic form of the thyroid hormone thyroxine. It is primarily used to treat hypothyroidism by supplementing or replacing the natural thyroid hormones in the body, helping to regulate metabolism and energy levels. Choice B, Metabolic Inhibitors, is incorrect because levothyroxine does not inhibit metabolism but rather helps regulate it. Choice C, Analgesic, is incorrect as levothyroxine is not used for pain relief but for thyroid hormone replacement therapy. Choice D, Loop Diuretic, is also incorrect as loop diuretics are medications that act on the kidneys to increase urine production and are not related to thyroid hormone replacement therapy.
3. A client has a new prescription for Verapamil to control hypertension. Which of the following instructions should the nurse include?
- A. Increase the amount of dietary fiber in the diet.
- B. Drink grapefruit juice daily to increase vitamin C intake.
- C. Decrease the amount of calcium in the diet.
- D. Withhold food for 1 hr after taking the medication.
Correct answer: A
Rationale: Increasing dietary fiber intake is essential when taking Verapamil to prevent constipation, a common adverse effect of this medication. Verapamil is a calcium channel blocker used to treat hypertension, and dietary fiber helps maintain bowel regularity and prevent constipation that may occur as a side effect of the medication.
4. A client reports taking Phenylephrine nasal drops for the past 10 days for Sinusitis. The nurse should assess the client for which of the following adverse effects of this medication?
- A. Sedation
- B. Nasal congestion
- C. Productive cough
- D. Constipation
Correct answer: B
Rationale: The correct answer is B: Nasal congestion. When used for more than 5 days, nasal sympathomimetic medications like phenylephrine can lead to rebound nasal congestion, which is an adverse effect to be assessed in the client. Sedation (choice A) is not a common adverse effect of phenylephrine. Productive cough (choice C) and constipation (choice D) are also not typical adverse effects associated with phenylephrine use.
5. What is the primary action of warfarin as an anticoagulant?
- A. Prevents the formation of blood clots
- B. Dissolves existing blood clots
- C. Dilates coronary arteries
- D. Treats rhythm disturbances
Correct answer: A
Rationale: The correct answer is A: "Prevents the formation of blood clots." Warfarin acts as an anticoagulant by inhibiting the synthesis of certain clotting factors in the liver. This action reduces the blood's ability to clot, making it effective in preventing the formation of blood clots. Choice B is incorrect because warfarin does not dissolve existing blood clots; it prevents their formation. Choice C is incorrect because warfarin's primary action is not to dilate coronary arteries. Choice D is incorrect as warfarin is not used to treat rhythm disturbances, but rather to prevent clot formation.
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