The nurse is preparing IV digoxin (Lanoxin) for a 2 year old ...

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The nurse is preparing IV digoxin (Lanoxin) for a 2 year old child weighing 33 lbs. The child is to receive 25 mcg/kg/d and the medication available is 0.25 mg/mL. How many mL of the medication will the nurse provide for each dose?
 
  1. 0.25 mL
  2. 0.5 mL
  3. 0.75 mL
  4. 1.5 mL

Question 2

The nurse is preparing a medication for a child weighing 66 lbs. The order reads: Clarithromycin (Biaxin) 7.5 mg/kg q 12 hours oral suspension. The medication available is 250 mg/5 ml.
 
  How many ml of the medication will the nurse provide for each dose? 1. 2.3 mL
  2. 2.8 mL
  3. 3.6 mL
  4. 4.5 mL

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Answer to Question 1

4

Rationale 1: mL/dose = 1 mL/0.25 mg x 1 mg/1000 mcg x 25 mcg/1 kg x 1 kg/2.2 lbs x 33 lbs/d. The child will receive 1.5 mL of medication per dose.

Answer to Question 2

4

Rationale 1: mL/dose = 5 mL/250 mg x 7.5 mg/1 kg x 1 kg/2.2 lbs x 66 lbs/1 dose. Multiply the numerators and then divide by the denominators. The client will receive 4.5 mL/ dose.