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NCLEX-PN

Category - Pharmacological Therapies

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A client with left-sided heart failure comes to the emergency department complaining of excessive weakness and loss of appetite. The client takes digoxin (Lanoxin). Which serum digoxin level indicates that the client has developed toxicity?

0.5 ng/mL
1.0 ng/mL
1.2 ng/mL
3.0 ng/mL

Explanation

Answer: D - The therapeutic level of digoxin is between 0.5 and 2.0 ng/mL. A serum level above 2.0 ng/mL increases the client’s risk for toxicity. A 3.0 ng/mL serum digoxin indicates digoxin toxicity.

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