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 child with Cystic Fibrosis has a new prescription for Acetylcysteine. Which of the following information should the nurse include in the instructions?
- A. Expect this medication to suppress your cough.
- B. Expect this medication to smell like rotten eggs.
- C. Expect this medication to cause euphoria.
- D. Expect this medication to turn your urine orange.
Correct answer: B
Rationale: The correct answer is B: 'Expect this medication to smell like rotten eggs.' Acetylcysteine contains sulfur, which gives it a characteristic rotten-egg odor. This smell is normal and expected when using this medication. Choices A, C, and D are incorrect. Acetylcysteine is not used to suppress cough, cause euphoria, or turn urine orange.
3. A client is receiving discharge instructions for a new prescription of Enoxaparin. Which of the following instructions should the provider include?
- A. Inject the medication into the muscle.
- B. Massage the injection site after administration.
- C. Rotate injection sites between the arms and thighs.
- D. Administer the medication in the abdomen.
Correct answer: D
Rationale: The correct answer is to administer the medication in the abdomen. Enoxaparin is administered as a subcutaneous injection in the abdomen to prevent bleeding complications. Injecting into the muscle or massaging the site can increase the risk of bleeding. Rotating sites between the arms and thighs is not recommended for Enoxaparin administration due to variations in absorption rates. Therefore, the provider should instruct the client to administer Enoxaparin in the abdomen for optimal effectiveness and safety.
4. Which statement is true about food and drug precautions?
- A. Limiting certain types of food or administering certain types of drugs is necessary.
- B. Certain combinations of food and drugs can cause adverse reactions.
- C. Precautions may involve limiting certain types of food or administering drugs rather than restricting the drug itself.
- D. When one drug alters the way another drug affects the body.
Correct answer: B
Rationale: The correct answer is B. Certain combinations of food and drugs can indeed lead to adverse reactions. It is important to be cautious with the simultaneous intake of food and drugs as interactions between them can affect their efficacy and safety. Choices A, C, and D are incorrect because they do not accurately reflect the potential risks associated with the combination of food and drugs.
5. A client has a new prescription for Ranitidine. Which of the following instructions should the nurse include?
- A. Take the medication with an antacid.
- B. Avoid drinking coffee while taking this medication.
- C. Take the medication at bedtime.
- D. Stop the medication if you develop a headache.
Correct answer: C
Rationale: The correct instruction for a client prescribed Ranitidine is to take the medication at bedtime. Ranitidine is best taken at night to reduce nighttime stomach acid production, providing optimal relief for conditions like gastroesophageal reflux disease (GERD) and ulcers.
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