ATI RN
ATI Pharmacology Proctored Exam 2019
1. A client is receiving moderate sedation with Diazepam IV and is oversedated. Which of the following medications should the nurse anticipate administering to this client?
- A. Ketamine
- B. Naltrexone
- C. Flumazenil
- D. Fluvoxamine
Correct answer: C
Rationale: Flumazenil is a competitive benzodiazepine antagonist that can reverse the sedative effects of benzodiazepines like Diazepam. In cases of oversedation, administering Flumazenil can help counteract the excessive sedation and other effects of Diazepam, thereby promoting the client's recovery and preventing potential complications. Ketamine (Choice A) is a dissociative anesthetic and not used to reverse benzodiazepine sedation. Naltrexone (Choice B) is an opioid receptor antagonist, not indicated for benzodiazepine oversedation. Fluvoxamine (Choice D) is an antidepressant and not used to reverse the sedative effects of benzodiazepines.
2. Which of the following is the antidote for benzodiazepine toxicity?
- A. Flumazenil
- B. Methylene blue
- C. Deferoxamine
- D. Alkalinize urine
Correct answer: A
Rationale: Flumazenil is the specific antidote for benzodiazepine toxicity. It acts as a competitive antagonist at the benzodiazepine binding site on the GABA receptor, reversing the sedative effects of benzodiazepines. Administration of flumazenil is indicated in cases of benzodiazepine overdose or toxicity to rapidly reverse the central nervous system depression caused by these drugs. It is important to note that flumazenil should be used cautiously in patients with a history of seizures or those who are physically dependent on benzodiazepines, as it can precipitate withdrawal symptoms or seizures.
3. A healthcare professional is providing discharge instructions to a client who has a new prescription for Enoxaparin. Which of the following instructions should the healthcare professional include?
- A. Inject the medication into the muscle.
- B. Massage the injection site after administration.
- C. Rotate injection sites between the arms and thighs.
- D. Administer the medication in the abdomen.
Correct answer: D
Rationale: The correct instruction is to administer Enoxaparin in the abdomen as a subcutaneous injection. This method helps prevent bleeding complications associated with the medication. Massaging the injection site after administration should be avoided to reduce the risk of local irritation or bleeding. While rotating injection sites between the arms and thighs is a good practice for some medications, it is not recommended for Enoxaparin. Consistent administration in the abdomen ensures optimal absorption and helps avoid complications.
4. A healthcare provider in a clinic is monitoring serum electrolytes for four older adult clients who take digoxin. Which of the following electrolyte values increases a client's risk for Digoxin toxicity?
- A. Calcium 9.2 mg/dL
- B. Calcium 10.3 mg/dL
- C. Potassium 3.4 mEq/L
- D. Potassium 4.8 mEq/L
Correct answer: C
Rationale: Potassium 3.4 mEq/L is below the expected reference range, which increases the risk for digoxin toxicity. Low potassium levels can lead to fatal dysrhythmias, particularly in older clients taking Digoxin. Hypokalemia potentiates the effects of Digoxin, making the heart more sensitive to its toxic effects. Monitoring and correcting electrolyte imbalances, especially low potassium levels, are crucial to prevent adverse effects of digoxin therapy. Calcium levels do not directly influence digoxin toxicity, so choices A and B are incorrect. High potassium levels, as in choice D, are less likely to increase the risk of digoxin toxicity compared to low potassium levels.
5. A client has a new prescription for nitroglycerin sublingual tablets. Which of the following instructions should the nurse include?
- A. Take one tablet at the first sign of chest pain.
- B. If pain is not relieved, take another tablet in 10 minutes.
- C. You can take up to five tablets in 15 minutes.
- D. Swallow the tablet with water.
Correct answer: A
Rationale: The correct instruction for a client with a new prescription for nitroglycerin sublingual tablets is to take one tablet at the first sign of chest pain. If the pain is not relieved after 5 minutes, the client should call 911 and take a second tablet. Taking more than the recommended dose can lead to serious side effects, and swallowing the tablet would not provide the rapid effect needed in cases of chest pain. Choice A is correct because it aligns with the standard protocol for nitroglycerin use in treating angina. Choice B is incorrect as the second tablet should be taken after 5 minutes, not 10 minutes. Choice C is incorrect as taking up to five tablets in 15 minutes is excessive and can result in serious complications. Choice D is incorrect as nitroglycerin sublingual tablets should be placed under the tongue for rapid absorption, not swallowed.
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