ATI RN
ATI Pharmacology
1. 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.
2. Why does a nurse on an oncology unit verify a client's current cumulative lifetime dose of doxorubicin before administering it to a client with breast cancer?
- A. Excessive doxorubicin can result in myelosuppression.
- B. Exceeding the lifetime cumulative dose limit of doxorubicin may lead to extravasation.
- C. An excess amount of doxorubicin can lead to cardiomyopathy.
- D. Exceeding the lifetime cumulative dose limit of doxorubicin may cause red-tinged urine and sweat.
Correct answer: C
Rationale: Verifying the client's current cumulative lifetime dose of doxorubicin is necessary because excessive amounts of the medication can lead to cardiomyopathy, a serious and potentially life-threatening side effect. By monitoring the cumulative dose, healthcare providers can help prevent cardiotoxicity and ensure patient safety during treatment.
3. A client is being discharged with a new prescription for Metronidazole. Which of the following instructions should the nurse include?
- A. Avoid drinking alcohol while taking this medication.
- B. Take this medication on an empty stomach.
- C. Avoid dairy products while taking this medication.
- D. Take this medication with antacids.
Correct answer: A
Rationale: The correct instruction for a client prescribed Metronidazole is to avoid drinking alcohol while taking this medication. Consuming alcohol with Metronidazole can lead to a disulfiram-like reaction, causing symptoms such as nausea, vomiting, and flushing. It is crucial to advise clients to abstain from alcohol during the course of treatment to prevent adverse reactions and ensure the effectiveness of the medication.
4. When teaching a client with a prescription for Loperamide for diarrhea, which instruction should the nurse include?
- A. Take the medication with a full glass of water.
- B. Avoid activities that require alertness.
- C. Expect abdominal pain and bloating.
- D. Take an additional dose after each loose stool.
Correct answer: B
Rationale: The correct instruction the nurse should include when teaching a client with a prescription for Loperamide is to 'Avoid activities that require alertness.' Loperamide can cause drowsiness, so clients should avoid such activities until they know how the medication affects them.
5. Which of the following is not a known effect of the drug Clozapine?
- A. Agranulocytosis
- B. Antipsychotic
- C. Used for Schizophrenia
- D. Hyperactivity
Correct answer: D
Rationale: Clozapine is associated with side effects like agranulocytosis (a serious blood condition), sedation (not hyperactivity), and is used as an antipsychotic to treat schizophrenia. Hyperactivity is not a typical effect of Clozapine, making it the correct answer in this context.
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