Calculate the flow rate to be administered by an infusion pump: (Round to the nearest whole number)
Ordered: 475 mL LR over 2 h
The Correct Answer is ["238"]
Calculation:
Given values:
Total volume = 475 mL
Infusion time = 2 hours
- Calculate the flow rate in mL/h using the formula:
Flow rate (mL/h) = Total volume (mL) / Infusion time (h)
= 475 mL / 2 h
= 237.5 mL/h.
- Round the answer to the nearest whole number.
= 238 mL/h.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["17.5"]
Explanation
Ordered dose: 175 mg.
- Determine the concentration of the medication from the label.
The label states the concentration is 50 mg per 5 mL.
Concentration:
50 mg / 5 mL
= 10 mg/mL.
- Calculate the volume to administer per dose.
Volume (mL) = Desired Dose / Concentration
= 175 mg / 10 mg/mL
= 17.5 mL.
Correct Answer is B
Explanation
A. KVO: "Keep vein open" infusions are minimal-rate fluids used to maintain IV line patency, not to deliver active medications like Zinacef. This does not apply to scheduled antibiotic therapy.
B. therapeutic: Zinacef (cefuroxime) is an antibiotic used to treat infections. Since it is being administered on a scheduled basis (750 mg IV q8h), it is used therapeutically to manage a medical condition.
C. replacement: Replacement fluids are used to restore lost fluids and electrolytes due to vomiting, diarrhea, bleeding, or other losses. They are not used for medication administration.
D. maintenance: Maintenance fluids meet basic daily fluid and electrolyte requirements in patients unable to eat or drink. They do not involve scheduled doses of antibiotics or other medications.
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