A patient admitted to the intensive care unit (ICU) is being treated with both verapamil (Calan) and digoxin (Lanoxin)
A nurse is aware that the patient should be monitored for which of the following effects from concurrent use of these medications? a. Decreased digoxin levels
b. Digoxin toxicity
c. Decreased verapamil effect
d. Verapamil toxicity
B
Verapamil increases plasma levels of digoxin by approximately 60%, thereby increasing the risk of digoxin toxicity.
Digoxin levels are increased, not decreased, when the drug is used concurrently with verapamil.
No changes occur in the effects of verapamil, including toxicity, when it is administered concur-rently with digoxin.
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