ATI RN
ATI Pharmacology Proctored Exam
1. 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.
2. A client is taking lisinopril. Which of the following outcomes indicates a therapeutic effect of the medication?
- A. Decreased blood pressure
- B. Increase in HDL cholesterol
- C. Prevention of bipolar manic episodes
- D. Improved sexual function
Correct answer: A
Rationale: The therapeutic effect of lisinopril, an ACE inhibitor, is indicated by a decrease in blood pressure. Lisinopril works by relaxing blood vessels, leading to a reduction in blood pressure. Monitoring and achieving a decrease in blood pressure is a key outcome when managing hypertension with lisinopril. Choices B, C, and D are incorrect because lisinopril is not intended to increase HDL cholesterol, prevent bipolar manic episodes, or improve sexual function. Therefore, the correct outcome indicating the therapeutic effect of lisinopril is a decrease in blood pressure.
3. A client has a new prescription for Phenelzine for the treatment of depression. Which of the following indicates that the client has developed an adverse effect of this medication?
- A. Orthostatic hypotension
- B. Hearing loss
- C. Gastrointestinal bleeding
- D. Weight loss
Correct answer: A
Rationale: Orthostatic hypotension is a known adverse effect of MAOIs, such as Phenelzine. It is characterized by a drop in blood pressure upon standing, which can lead to dizziness or fainting. Monitoring for orthostatic hypotension is crucial when administering MAOIs to prevent potential complications. Hearing loss (Choice B) is not a typical adverse effect associated with Phenelzine. Gastrointestinal bleeding (Choice C) is more commonly linked to NSAIDs or anticoagulants. Weight loss (Choice D) is not a typical adverse effect of Phenelzine and is more likely related to other factors such as appetite changes or metabolic issues.
4. A client has a new prescription for Lithium Carbonate. When teaching the client about ways to prevent Lithium toxicity, the client should be advised to do which of the following?
- A. Avoid using acetaminophen for headaches.
- B. Restrict intake of foods rich in sodium.
- C. Decrease fluid intake to less than 1,500 mL daily.
- D. Limit aerobic activity in hot weather.
Correct answer: D
Rationale: The correct answer is to advise the client to limit aerobic activity in hot weather. Aerobic activity in hot weather can lead to excessive sweating, potentially causing sodium and water depletion, which can increase the risk of Lithium toxicity. It is important for clients taking Lithium to maintain adequate hydration and sodium levels to prevent toxicity. Choices A, B, and C are incorrect. Avoiding acetaminophen for headaches is not directly related to Lithium toxicity. Restricting intake of foods rich in sodium is not recommended because adequate sodium levels are necessary to prevent Lithium toxicity. Decreasing fluid intake to less than 1,500 mL daily is also not advisable as adequate hydration is important to prevent Lithium toxicity.
5. A client in a coronary care unit is being admitted after CPR post cardiac arrest. The client is receiving IV lidocaine at 2 mg/min. When the client asks the nurse why he is receiving that medication, the nurse should explain that it has which of the following actions?
- A. Prevents dysrhythmias
- B. Slows intestinal motility
- C. Dissolves blood clots
- D. Relieves pain
Correct answer: A
Rationale: Lidocaine is administered to prevent dysrhythmias by delaying conduction in the heart and reducing the automaticity of heart tissue. This action helps stabilize the heart's electrical activity and prevent life-threatening arrhythmias post-cardiac arrest. Choices B, C, and D are incorrect as lidocaine is not used for slowing intestinal motility, dissolving blood clots, or relieving pain in this context.
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