ATI RN
ATI Pharmacology Proctored Exam
1. A child is prescribed Amoxicillin 20 mg/kg/day PO to be administered every 12 hr. The child weighs 44 lb. The available medication is amoxicillin suspension 250 mg/5 mL. How many mL should be given per dose?
- A. 4 mL
- B. 5 mL
- C. 6 mL
- D. 3 mL
Correct answer: A
Rationale: To calculate the dosage per administration: Convert the weight to kg (44 lb / 2.2 lb/kg = 20 kg). Then, (20 mg/kg/day x 20 kg) / 2 (for every 12 hr dosing) = 200 mg per dose. (200 mg / 250 mg) x 5 mL = 4 mL per dose. Therefore, the nurse should administer 4 mL of amoxicillin suspension per dose. Choice B, 5 mL, is incorrect because the calculation shows that 4 mL is the correct dose. Choices C and D are also incorrect as they are not in line with the calculated dosage based on the weight of the child and the concentration of the medication.
2. Which of the following is the primary site of activity for the drug Warfarin?
- A. Kidney
- B. Liver
- C. Blood
- D. Heart
Correct answer: B
Rationale: Warfarin primarily affects the liver where it inhibits the synthesis of clotting factors.
3. What is the therapeutic use of Albuterol?
- A. Bronchodilation
- B. Anti-coagulant
- C. Anti-arrhythmic
- D. Proton-pump inhibitor
Correct answer: A
Rationale: The correct answer is A: Bronchodilation. Albuterol is primarily used for bronchodilation, where it relaxes the muscles in the airways to make breathing easier. This medication is commonly prescribed for conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other respiratory conditions where bronchodilation is beneficial. Choices B, C, and D are incorrect because Albuterol is not used as an anti-coagulant, anti-arrhythmic, or proton-pump inhibitor.
4. When caring for a client prescribed Lithium, which laboratory value should the nurse monitor to assess for potential toxicity?
- A. Serum sodium
- B. Serum lithium
- C. Serum potassium
- D. Serum calcium
Correct answer: B
Rationale: The nurse should monitor the client's serum lithium levels to ensure they are within the therapeutic range and to assess for potential toxicity. Monitoring serum lithium levels is crucial because lithium has a narrow therapeutic range, and levels outside this range can lead to toxicity, which can be life-threatening. Therefore, regular monitoring is essential to prevent adverse effects and ensure the medication's effectiveness.
5. A client has a new prescription for Digoxin to treat heart failure. Which of the following instructions should the nurse include in the teaching?
- A. Contact the provider if the heart rate is less than 60/min.
- B. Check the pulse rate for 30 seconds and multiply the result by 2.
- C. Increase the intake of sodium.
- D. Take with food if nausea occurs.
Correct answer: A
Rationale: The correct answer is A. It is crucial for clients on Digoxin to monitor their heart rate. A heart rate less than 60/min can indicate bradycardia, a potential side effect of Digoxin. Therefore, the client should be instructed to contact the provider if their heart rate is less than 60/min to prevent complications and receive appropriate management. Choices B, C, and D are incorrect. Checking the pulse rate for 30 seconds and multiplying by 2 is not specific to Digoxin administration. Increasing sodium intake is contraindicated as Digoxin can lead to sodium retention. Taking Digoxin with food if nausea occurs is not recommended as it may affect the drug's absorption.
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