Your patient is receiving Heparin via a continuous IV infusion at a rate of 1600 units per hour.
The bag is labeled N/S 500 mLs and contains Heparin 40,000 units.
What rate should the IV pump be set at to deliver this ordered amount of Heparin? mLs/hr.
The Correct Answer is ["mLs\/hr."]
Answer and explanation
Step 1 is to calculate the total units of Heparin in 1 mL of the solution. This is done by dividing the total units of Heparin in the bag (40,000 units) by the total volume of the bag (500 mL). So, 40,000 units ÷ 500 mL = 80 units/mL. Step 2 is to calculate the rate at which the IV pump should be set. This is done by dividing the ordered amount of Heparin per hour (1600 units) by the units of Heparin per mL (80 units/mL). So, 1600 units/hr ÷ 80 units/mL = 20 mL/hr.
So, the correct answer is 20 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Cephalic refers to the presentation of the fetus, not the lie. The lie refers to the orientation of the fetus in relation to the mother’s spine.
Choice B rationale:
Flexion refers to the attitude or posture of the fetus, not the lie.
Choice C rationale:
Longitudinal is the term used to describe the fetal lie when the fetus is aligned with the mother’s spine, either head down (cephalic) or buttocks down (breech).
Choice D rationale:
Extension refers to the attitude or posture of the fetus, not the lie.
Correct Answer is D
Explanation
Choice A rationale:
A respiratory rate of 10 breaths/minute is low and could indicate magnesium toxicity.
Choice B rationale:
Difficulty in arousing could also indicate magnesium toxicity.
Choice C rationale:
Urinary output of 20 mL per hour is low and could indicate renal impairment.
Choice D rationale:
Deep tendon reflexes of 2+ would be considered normal and therefore a therapeutic level of the drug.
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