ATI N300 Dosage Calculation Proctored Exam
Calculation
A physician orders Epoetin 100 units/kg subcutaneously for anemia. The client weighs 99 lbs. The ampule contains Epoetin 3000 units per mL. How many mLs should the nurse administer? (Use a preceding, zero if it applies. Do not use trailing, zeros. Round to the nearest tenth)
mL
Explanation & Rationale
Convert the client's weight from pounds to kilograms: 1 lb = 0.454 kg Weight in kg = 99 lbs x 0.454 kg/lb = 44.946 kg (approximately 45 kg) Calculate the total units of Epoetin needed: Dosage = 100 units/kg Total units = 100 units/kg x 45 kg = 4500 units Determine the concentration of the Epoetin solution: The ampule contains 3000 units per mL. Calculate the volume (in mL) to administer: Use the concentration as a conversion factor: Volume (mL) = Total units x (1 mL / 3000 units) Volume (mL) = 4500 units x (1 mL / 3000 units) = 1.5 mL
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