ATI RN
ATI Pharmacology Proctored Exam
1. A preschooler weighing 44 lb is to receive Amoxicillin 20 mg/kg/day PO divided equally every 12 hr. The available amoxicillin suspension is 250 mg/5 mL. How many mL should the nurse administer per dose?
- A. 4 mL
- B. 5 mL
- C. 6 mL
- D. 3 mL
Correct answer: A
Rationale: To calculate the dosage per administration: First, convert the weight to kg (44 lb / 2.2 lb/kg = 20 kg). Then, calculate the required dosage per dose: (20 mg/kg/day x 20 kg) / 2 (for every 12 hr dosing) = 200 mg per dose. To determine the mL per dose, divide the required dosage by the concentration of the amoxicillin suspension: (200 mg / 250 mg) x 5 mL = 4 mL per dose. Therefore, the correct answer is 4 mL. Choice B (5 mL) is incorrect because the correct calculation yields 4 mL. Choices C (6 mL) and D (3 mL) are also incorrect as they do not align with the accurate calculation based on the provided information.
2. A client with Angina Pectoris asks the nurse about the next step if one tablet does not relieve Anginal pain after waiting 5 minutes. Which of the following responses should the nurse make?
- A. Take two more sublingual tablets simultaneously.
- B. Call emergency services.
- C. Take a sustained-release nitroglycerin capsule.
- D. Wait another 5 minutes before taking a second sublingual tablet.
Correct answer: B
Rationale: In a situation where Anginal pain persists after taking one sublingual tablet and waiting 5 minutes, it is crucial to call emergency services (911) immediately. This could indicate a myocardial infarction (heart attack) rather than a typical Anginal attack. The client should not take two more sublingual tablets simultaneously without seeking immediate medical help as this could delay appropriate intervention if the pain is due to a heart attack. Taking a sustained-release nitroglycerin capsule is not recommended for immediate relief of acute Anginal pain as it works too slowly. Waiting another 5 minutes before taking a second sublingual tablet is not appropriate if the pain persists, as prompt action is essential in suspected heart-related issues.
3. A client has a new prescription for nitroglycerin transdermal patches. Which of the following instructions should the nurse include?
- A. Apply the patch to a different location each day.
- B. Remove the patch every night before bedtime.
- C. Massage the patch area gently after application.
- D. Shave the area before applying the patch.
Correct answer: B
Rationale: The correct instruction for a client using nitroglycerin transdermal patches is to remove the patch every night before bedtime. This practice helps prevent tolerance to the medication's effects. Continuous exposure to nitroglycerin can result in the body becoming less responsive to its therapeutic effects over time, reducing its efficacy in managing the prescribed condition. Choices A, C, and D are incorrect. Applying the patch to a different location each day does not address the issue of tolerance. Massaging the patch area gently after application is not recommended as it may alter drug absorption. Shaving the area before applying the patch is unnecessary and may increase the risk of skin irritation.
4. A client has difficulty swallowing medications and is prescribed enteric-coated aspirin PO once daily. The client asks if the medication can be crushed to make it easier to swallow. Which of the following responses should the nurse provide?
- A. Crushing the medication might cause you to have a stomachache or indigestion.
- B. Crushing the medication is a good idea, and I can mix it in some ice cream for you.
- C. Crushing the medication would release all the medication at once, rather than over time.
- D. Crushing is unsafe, as it destroys the ingredients in the medication.
Correct answer: A
Rationale: Crushing an enteric-coated medication can cause it to break down in the stomach instead of the intestines, potentially leading to gastrointestinal distress like stomachache or indigestion. It is important to take enteric-coated medications whole to ensure they are properly absorbed in the intestines and to prevent irritation to the stomach.
5. A client has a new prescription for Clonidine to assist with maintenance of abstinence from opioids. The nurse should instruct the client to monitor for which of the following adverse effects?
- A. Diarrhea
- B. Dry mouth
- C. Insomnia
- D. Hypertension
Correct answer: B
Rationale: Dry mouth is a common adverse effect associated with Clonidine use. Clonidine is known to cause a reduction in saliva production, leading to dry mouth. Monitoring for this adverse effect is essential to ensure client comfort and compliance with the medication. Diarrhea is not a common adverse effect of Clonidine. Insomnia is more commonly associated with opioid withdrawal rather than Clonidine use. While Clonidine is used to treat hypertension, it is not typically an adverse effect of the medication.
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