A nurse is preparing to administer regular insulin 3.5 units/hr by continuous IV infusion. Available is regular insulin 100 units in 0.45% sodium chloride 1,000 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 ["35"]
Understanding the Problem
Order: Regular insulin 3.5 units/hr
Available Solution: Regular insulin 100 units in 1000 mL of 0.45% sodium chloride
Desired Rate: mL/hr
Step 1: Determine the Concentration of the Insulin Solution
Available Insulin: 100 units
Solution Volume: 1000 mL
Concentration: 100 units / 1000 mL = 0.1 units/mL
Step 2: Calculate the Infusion Rate in mL/hr
Ordered Dose: 3.5 units/hr
Concentration: 0.1 units/mL
Infusion Rate: 3.5 units/hr / 0.1 units/mL = 35 mL/hr
Step 3: Round to the Nearest Whole Number
The calculated rate is 35 mL/hr, which is already a whole number.
Answer: 35 mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["25"]
Explanation
Identify the Given Information:
Infusion Rate: 100 mL/hr
Drop Factor: 15 gtt/mL
Convert the Infusion Rate to mL/min:
There are 60 minutes in 1 hour.
Infusion Rate (mL/min) = 100 mL/hr / 60 min/hr
Infusion Rate (mL/min) = 1.6667 mL/min (approximately)
Calculate the Drip Rate (gtt/min):
Drip Rate (gtt/min) = Infusion Rate (mL/min) x Drop Factor (gtt/mL)
Drip Rate (gtt/min) = 1.6667 mL/min x 15 gtt/mL
Drip Rate (gtt/min) = 25 gtt/min
Round to the Nearest Whole Number (if necessary):
25 gtt/min
Correct Answer is ["1.5"]
Explanation
Convert the Client's Weight from Pounds to Kilograms:
1 kg = 2.205 lbs
Weight in kg = 132 lbs / 2.205 lbs/kg
Weight in kg ≈ 59.86 kg
Calculate the Total Dose of Lorazepam Needed:
Dose = 0.05 mg/kg x 59.86 kg
Dose ≈ 2.993 mg
Calculate the Volume of Lorazepam to Administer:
Available concentration = 2 mg/mL
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
Volume (mL) = 2.993 mg / 2 mg/mL
Volume (mL) ≈ 1.4965 mL
Round to the Nearest Tenth:
1.5 mL
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