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)
The Correct Answer is ["1.5"]
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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.5"]
Explanation
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
Correct Answer is ["7.5"]
Explanation
Identify the Desired Dose:
The client needs 6 units of insulin per hour.
Identify the Available Concentration:
The solution has 200 units of insulin in 250 mL of NSS.
Set up the Proportion:
(Desired Dose / Available Concentration) = (Rate (mL/hr) / Volume (mL))
(6 units / 200 units) = (X mL / 250 mL)
Solve for X (the Rate):
Cross-multiply: 6 units x 250 mL = 200 units x X mL
1500 = 200X
X = 1500 / 200
X = 7.5 mL/hr
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