A nurse is preparing to administer magnesium sulfate 1g over 4hr by continuous IV infusion. Available is magnesium sulfate 1 g in 0.9% sodium chloride 100 mL. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["25"]
Identify the Total Volume and Infusion Time:
Total Volume: 100 mL
Infusion Time: 4 hours
Calculate the Infusion Rate (mL/hr):
We need to find out how many mL should be infused per hour.
We can use the following formula:
Infusion Rate (mL/hr) = Total Volume (mL) / Infusion Time (hours)
Plug in the Values and Calculate:
Infusion Rate (mL/hr) = 100 mL / 4 hours
Infusion Rate (mL/hr) = 25 mL/hr
Round to the Nearest Whole Number (if necessary):
25 mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.4"]
Explanation
Identify the Desired Dose and Available Concentration:
Desired Dose: 0.4 mg of naloxone
Available Concentration: 1 mg/mL (This means there is 1 mg of naloxone in every 1 mL of solution)
Set up the Calculation:
We need to find the volume (in mL) that contains the desired dose of 0.4 mg.
We can use the following formula:
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
Plug in the Values and Calculate:
Volume (mL) = 0.4 mg / 1 mg/mL
Volume (mL) = 0.4 mL
Round to the Nearest Tenth (if necessary):
0.4 mL
Correct Answer is ["2"]
Explanation
Understanding the Problem
Order: Propranolol 240 mg/day PO in two divided doses
Available: Propranolol 60 mg tablets
Desired Dose: Number of tablets per dose
Step 1: Calculate the Dose per Administration
Total Daily Dose: 240 mg
Number of Doses: 2
Dose per Administration: 240 mg / 2 doses = 120 mg/dose
Step 2: Calculate the Number of Tablets per Dose
Dose per Administration: 120 mg
Tablet Strength: 60 mg/tablet
Number of Tablets: 120 mg / 60 mg/tablet = 2 tablets
Step 3: Round to the Nearest Whole Number
The calculated number of tablets is 2, which is already a whole number.
Answer: 2 tablets
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