ATI RN
ATI Pharmacology Proctored
1. Which of the following is the antidote for Heparin toxicity?
- A. Protamine
- B. Methylene blue
- C. N-acetylcysteine
- D. Glucagon
Correct answer: A
Rationale: Protamine is the specific antidote for Heparin toxicity. Heparin is an anticoagulant medication, and if an overdose occurs or if there is excessive bleeding due to Heparin use, protamine, a positively charged molecule, can neutralize the anticoagulant effects of Heparin by forming a complex with it. This binding prevents Heparin from further inhibiting coagulation factors and helps in reversing its effects.
2. 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.
3. A nurse is teaching a client who has a new prescription for Furosemide. Which of the following dietary instructions should the nurse provide?
- A. Increase your intake of potassium-rich foods.
- B. Limit your intake of calcium-rich foods.
- C. Avoid consuming dairy products.
- D. Increase your intake of fiber-rich foods.
Correct answer: A
Rationale: Furosemide, a loop diuretic, can cause potassium loss. Clients should increase their intake of potassium-rich foods to prevent hypokalemia.
4. A client with end-stage cancer receiving Morphine has been prescribed Methylnaltrexone. The client's daughter asks about the purpose of Methylnaltrexone. Which response should the nurse provide?
- A. The medication will increase your mother's respirations.
- B. The medication will prevent dependence on the Morphine.
- C. The medication will relieve your mother's constipation.
- D. The medication works with the Morphine to increase pain relief.
Correct answer: C
Rationale: Methylnaltrexone is an opioid antagonist used to treat severe constipation unresponsive to laxatives in opioid-dependent clients. It functions by blocking the mu opioid receptors in the gastrointestinal tract, helping alleviate constipation associated with opioid use. Choices A, B, and D are incorrect. Methylnaltrexone does not increase respirations, prevent dependence on Morphine, or work with Morphine to increase pain relief; its primary purpose is to relieve opioid-induced constipation.
5. When administering Amitriptyline to a client experiencing cancer pain, for which of the following adverse effects should the nurse monitor?
- A. Decreased appetite
- B. Explosive diarrhea
- C. Decreased pulse rate
- D. Orthostatic hypotension
Correct answer: D
Rationale: The correct answer is 'Orthostatic hypotension.' When administering Amitriptyline, the nurse should monitor for orthostatic hypotension. This condition can occur due to the drug's anticholinergic effects, leading to a sudden drop in blood pressure when standing up. Symptoms may include dizziness, lightheadedness, and an increased risk of falls. Monitoring for signs of orthostatic hypotension is crucial to prevent complications. Choices A, B, and C are incorrect as decreased appetite, explosive diarrhea, and decreased pulse rate are not typically associated with the administration of Amitriptyline.
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