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. Following a stroke, a client has been started on clopidogrel (Plavix). Why is this medication being administered?
- A. To prevent stroke in high-risk patients, such as those with prosthetic heart valves
- B. To decrease blood pressure
- C. To increase heart rate
- D. To provide antiplatelet activity in patients who cannot tolerate aspirin
Correct answer: D
Rationale: Clopidogrel (Plavix) is an antiplatelet medication that inhibits platelet aggregation, reducing the risk of blood clots. It is commonly used in patients who have had a stroke and cannot tolerate aspirin due to allergies or intolerances. Choosing clopidogrel in these cases helps prevent further clot formation and reduces the risk of recurrent strokes.
3. A client asks a nurse about Feverfew. Which response should the nurse provide?
- A. It is used to treat skin infections.
- B. It can decrease the frequency of migraine headaches.
- C. It can lessen the nasal congestion in the common cold.
- D. It can relieve nausea of morning sickness during pregnancy.
Correct answer: B
Rationale: The correct response is B: 'It can decrease the frequency of migraine headaches.' Feverfew is known for reducing the frequency of migraine headaches, but it has not been proven to relieve an existing migraine headache. Choices A, C, and D are incorrect because Feverfew is not used to treat skin infections, lessen nasal congestion in the common cold, or relieve nausea of morning sickness during pregnancy.
4. A patient states he experiences anxiety and has panic attacks at least once a week. What might be helpful for this patient?
- A. Phenytoin (Dilantin)
- B. Lithium
- C. Alprazolam (Xanax)
- D. Spironolactone
Correct answer: C
Rationale: Alprazolam (Xanax) is a medication commonly prescribed to treat anxiety disorders and panic attacks. It belongs to the class of medications known as benzodiazepines, which work by enhancing the effects of gamma-aminobutyric acid (GABA) in the brain to produce a calming effect. Phenytoin is an antiepileptic drug, not typically used for anxiety or panic attacks. Lithium is primarily used to treat bipolar disorder, not anxiety. Spironolactone is a diuretic primarily used to treat conditions like high blood pressure and heart failure, not anxiety or panic attacks.
5. A healthcare professional is caring for a client who is prescribed Metformin. Which of the following laboratory values should the healthcare professional monitor to assess for potential adverse effects?
- A. Blood glucose
- B. Creatine kinase
- C. Hemoglobin A1c
- D. Serum creatinine
Correct answer: D
Rationale: Corrected Rationale: Metformin can lead to lactic acidosis, especially in individuals with impaired renal function. Monitoring the client's serum creatinine levels is crucial to assess kidney function because Metformin is eliminated by the kidneys, and impaired renal function can increase the risk of adverse effects. Monitoring blood glucose levels is essential for assessing the effectiveness of Metformin in managing diabetes but is not directly related to potential adverse effects of Metformin. Creatine kinase is not typically monitored in relation to Metformin therapy. Hemoglobin A1c is used to assess long-term glucose control in diabetes but is not specific for monitoring Metformin adverse effects.
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