The patient has an order for 15,000 units of heparin SUBQ now. Nurse A has prepared the dose of 15,000 units of heparin. Following standard practice, Nurse A shows the multidose vial of heparin (40,000 units per mL) and the syringe with the drawn dose to Nurse B. Nurse B sets up the following proportion:
40,000 units: 1 mL:: 15,000 units: x mL
What volume of heparin would Nurse B expect to see in the syringe?
2 mL
0.2 mL
0.38 mL (0.375 mL)
2.7 mL (2.66 mL)
The Correct Answer is C
Calculation:
Ordered Dose (D) = 15,000 units
Available Dose (H) = 40,000 units
Quantity (Q) = 1 mL
Volume (mL) = (Dose Ordered (D) / Dose Available (H)) x Quantity (Q)
= (15,000 units / 40,000 units) x 1 mL
= 0.375 x 1 mL
= 0.375 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Calculation:
- Identify the given volume in milliliters and the conversion factor.
Given volume = 2,000 milliliters (mL)
Conversion factor: 1 Liter (L) = 1,000 milliliters (mL)
- Calculate the volume in liters (L).
Volume (L) = (Volume in mL / Conversion factor)
= (2,000 mL / 1,000 mL/L)
= 2 L
Correct Answer is C
Explanation
A. Request 1,000 mg caplets from pharmacy: This is unnecessary because the pharmacy already dispensed caplets containing 1 gram, which is equivalent to 1,000 mg.
B. Calculate the ordered dose as 0.01 gram: Converting 1,000 mg to grams results in 1 gram, not 0.01 gram. This calculation is incorrect and could cause confusion.
C. Plan to give the patient one caplet: Each caplet contains 1 gram (1,000 mg), matching the prescribed dose. Administering one caplet fulfills the provider’s order accurately.
D. Ask the pharmacist to clarify the ordered dose: The order and the medication provided are consistent, so clarification is not necessary in this case.
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