ATI RN
ATI Pharmacology Test Bank
1. What is the therapeutic use of Phenytoin?
- A. Replacement in hypothyroidism to restore normal hormonal balance
- B. Diminished accumulation of acid in the gastric lumen with lessened gastroesophageal reflux
- C. Diminished seizure activity, termination of ventricular arrhythmias
- D. Prevention of thrombus formation, prevention of extension of existing thrombi
Correct answer: C
Rationale: Phenytoin is primarily used to diminish seizure activity and is effective in terminating ventricular arrhythmias. It works by stabilizing neuronal membranes, reducing repetitive neuronal firing, and limiting the spread of seizure activity in the brain. While phenytoin does not have a direct role in preventing thrombus formation or extending existing thrombi, it is crucial in managing seizures and certain arrhythmias.
2. A client has a new prescription for Beclomethasone. Which of the following instructions should the nurse include?
- A. Rinse your mouth after each use of this medication.
- B. Limit fluid intake while taking this medication.
- C. Increase your intake of vitamin B12 while taking this medication.
- D. You can take the medication as needed.
Correct answer: A
Rationale: The correct instruction for a client prescribed Beclomethasone is to rinse the mouth after each use to reduce the risk of oral fungal infection. Beclomethasone is a corticosteroid inhaler that can increase the risk of oral thrush, so rinsing the mouth helps minimize this side effect. Choice B is incorrect because there is no need to limit fluid intake while taking Beclomethasone. Choice C is incorrect as there is no specific need to increase vitamin B12 intake with this medication. Choice D is incorrect because Beclomethasone should be taken as prescribed, not as needed.
3. What is the action of Metformin?
- A. Decreasing intestinal glucose absorption
- B. Increasing sensitivity to insulin
- C. Decreasing hepatic glucose production
- D. All of the above
Correct answer: D
Rationale: Metformin exerts its effects by decreasing hepatic glucose production, increasing sensitivity to insulin, and decreasing intestinal glucose absorption. These actions help in lowering blood glucose levels and improving insulin sensitivity in individuals with diabetes.
4. A client has a new prescription for Somatropin to stimulate growth. The client should monitor for which of the following adverse effects?
- A. Hyperglycemia.
- B. Bradycardia.
- C. Urinary frequency.
- D. Edema.
Correct answer: A
Rationale: Somatropin is known to cause hyperglycemia as a common adverse effect. Therefore, the client should be instructed to monitor for elevated blood glucose levels closely while taking this medication to ensure early detection and management of hyperglycemia.
5. Which of the following is the antidote for lead poisoning?
- A. Naloxone
- B. Nitrite
- C. CaEDTA
- D. Dialysis
Correct answer: C
Rationale: Calcium disodium ethylenediaminetetraacetic acid (CaEDTA) is the antidote for lead poisoning. CaEDTA works by chelating lead, forming a complex that is then excreted in the urine. It is used in chelation therapy to treat lead poisoning by reducing lead levels in the body.
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