Difficulty: Medium
Average Score: 95%
Simulated
The nurse is preparing to administer digoxin (Lanoxin) to a client experiencing atrial fibrillation. Which of the following electrolyte imbalances would the nurse assess to reduce the incidence of toxicity with digoxin (Lanoxin)?
Correct answer
A
Rationale
Correct Answer: A (hypokalemia)
Rationale: Hypokalemia increases the risk of digoxin toxicity. Digoxin competes with potassium for binding sites on the sodium-potassium pump in cardiac cells. Low potassium levels enhance digoxin's effects, leading to toxicity. Monitoring potassium levels is crucial when administering digoxin.
Incorrect Choices:
B: Hyperkalemia would not increase digoxin toxicity; in fact, it may reduce its effects.
C: Hypocalcemia does not directly impact digoxin toxicity.
D: Hypernatremia is not linked to digoxin toxicity.
Rationale: Hypokalemia increases the risk of digoxin toxicity. Digoxin competes with potassium for binding sites on the sodium-potassium pump in cardiac cells. Low potassium levels enhance digoxin's effects, leading to toxicity. Monitoring potassium levels is crucial when administering digoxin.
Incorrect Choices:
B: Hyperkalemia would not increase digoxin toxicity; in fact, it may reduce its effects.
C: Hypocalcemia does not directly impact digoxin toxicity.
D: Hypernatremia is not linked to digoxin toxicity.