Question

a nurse is preparing to administer epoetin alfa 50 units/kg subcutaneous weekly to a preschooler who weighs 40 lb. available is epoetin alfa 2,000 units/ml. how many ml should the nurse administer? (round the answer to the nearest hundredth. use a leading zero if it applies. do not use a trailing zero.)

Explanation:

Step1: Convert weight to kg

$40\ \text{lb} \times \frac{1\ \text{kg}}{2.2046\ \text{lb}} \approx 18.1437\ \text{kg}$

Step2: Calculate total units needed

$50\ \text{units/kg} \times 18.1437\ \text{kg} = 907.185\ \text{units}$

Step3: Find volume in mL

$\frac{907.185\ \text{units}}{2000\ \text{units/mL}} \approx 0.4536\ \text{mL}$

Step4: Round to nearest hundredth

$0.45\ \text{mL}$

Answer:

0.45