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 healthcare professional is reviewing a client's medication history and notes a new prescription for Enalapril. The healthcare professional should monitor the client for which of the following as an adverse effect of this medication?
- A. Bradycardia
- B. Hyperkalemia
- C. Hypoglycemia
- D. Hypocalcemia
Correct answer: B
Rationale: Enalapril, an ACE inhibitor, can cause hyperkalemia as an adverse effect due to decreased aldosterone levels, which leads to potassium retention. Monitoring potassium levels is essential to prevent potential complications associated with hyperkalemia. The other options, bradycardia, hypoglycemia, and hypocalcemia, are not typically associated with Enalapril use and are less likely to occur as adverse effects.
3. A client is receiving IV Dopamine for the treatment of shock. Which of the following findings indicates that the medication is effective?
- A. Increased heart rate
- B. Decreased blood pressure
- C. Increased urine output
- D. Decreased respiratory rate
Correct answer: C
Rationale: Dopamine is a medication used in shock to increase cardiac output and improve renal perfusion. An increase in urine output indicates that the medication is effective as it shows improved renal perfusion and kidney function, which are essential for managing shock effectively. Choices A, B, and D are incorrect as an increased heart rate, decreased blood pressure, and decreased respiratory rate are not direct indicators of the effectiveness of IV Dopamine in treating shock.
4. A client in the operating room received a dose of Succinylcholine, leading to muscle rigidity and a sudden rise in body temperature. The nurse should anticipate a prescription for which of the following medications?
- A. Neostigmine
- B. Naloxone
- C. Dantrolene
- D. Vecuronium
Correct answer: C
Rationale: Muscle rigidity and a sudden rise in temperature are indicative of malignant hyperthermia, a potential complication of succinylcholine. Dantrolene is the drug of choice to treat malignant hyperthermia as it acts on skeletal muscles to reduce metabolic activity and counteract the symptoms. Neostigmine (Choice A) is used to reverse the effects of non-depolarizing neuromuscular blocking agents, not for malignant hyperthermia. Naloxone (Choice B) is an opioid antagonist used for opioid overdose. Vecuronium (Choice D) is a non-depolarizing neuromuscular blocking agent and is not the appropriate medication for malignant hyperthermia.
5. A client has a new prescription for Lisinopril. Which of the following adverse effects should the nurse monitor?
- A. Dry cough
- B. Weight gain
- C. Diarrhea
- D. Nausea
Correct answer: A
Rationale: The correct answer is 'Dry cough.' Lisinopril, an ACE inhibitor, commonly causes a persistent dry cough as an adverse effect. If the client experiences this, it is important to notify the healthcare provider for further evaluation and management.
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