Pharmacological and Parenteral Therapies Q 94

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Mickey, a 6-year-old child with a congenital heart disorder is admitted with congestive heart failure. Digoxin (lanoxin) 0.12 mg is ordered for the child. The bottle of Lanoxin contains .05 mg of Lanoxin in 1 ml of solution. What amount should the nurse administer to the child?

  

     A. 1.2 ml

     B. 2.4 ml

     C. 3.5 ml

     D. 4.2 ml

    

    

Correct Answer: B. 2.4 ml

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.05 mg/ 1 ml = .12mg/ x ml, .05x = .12, x = 2.4 ml.

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Option A: 1.2 ml is less than the correct dosage and may not produce the desired effects of the drug.

Option C: 3.5 ml is more than the correct dosage as calculated and may produce adverse effects.

Option D: 4.2 ml is an incorrect dosage according to the formula used.

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