A patient is ordered 40 units/kg IV bolus of Heparin. The patient weighs 154 lbs. Heparin is supplied 25000 units/250mL. How many mL will the nurse administer?
The Correct Answer is ["28"]
Let's calculate the dosage step-by-step:
1. Convert pounds to kilograms:
154 lbs x 2.2 kg = 70 kg
2. Calculate the total dosage:
40 units/kg x 70kg = 2800 units
3. Determine the concentration of heparin in the solution:
25000 units / 250 mL = 100 units/mL
4. Calculate the volume needed:
2800 units / 100 units/mL ≈ 28 mL
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.7"]
Explanation
Let's calculate the dosage step-by-step:
1. Convert pounds to kilograms:
121 lbs/ 2.20462 kg = 54.9 kg
2. Calculate the total daily dosage:
2.5 mg/kg/day x 54.9 kg = 137.25 mg/day
3. Calculate the dosage per dose (divided equally twice daily):
137.33 mg/day / 2 doses ≈ 68.625 mg/dose
4. Determine the concentration of the medication:
40 mg/mL
5. Calculate the volume needed:
68.67 mg / 40 mg/mL = 1.7 mL
Correct Answer is ["1.5"]
Explanation
To determine the correct volume to administer, follow these steps:
1. Convert the client’s weight from pounds to kilograms:
1 pound = 0.453592 kilograms
99 pounds x 0.453592 = 44.91 kilograms (rounded to two decimal places)
2. Calculate the dosage in units:
100 units/kg x 44.91 kg = 4491 units
3. Determine the volume to administer:
The ampule contains 3000 units/mL.
4491 units / 3000 units/mL = 1.497 mL
4. Round to the nearest tenth:
1.497 mL rounded to the nearest tenth is 1.5 mL
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