A nurse is preparing to administer lactated Ringer's 150 mUhr by continuous IV infusion. The drop factor of the manual tv tubing is 15 gtt/mL. The nurse should set the IV flow rate to deliver how many gtt/min? (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 ["38"]
Identify the Given Information:
Infusion Rate: 150 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) = 150 mL/hr / 60 min/hr
Infusion Rate (mL/min) = 2.5 mL/min
Calculate the Drip Rate (gtt/min):
Drip Rate (gtt/min) = Infusion Rate (mL/min) x Drop Factor (gtt/mL)
Drip Rate (gtt/min) = 2.5 mL/min x 15 gtt/mL
Drip Rate (gtt/min) = 37.5 gtt/min
Round to the Nearest Whole Number:
38 gtt/min
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["4"]
Explanation
Identify the Desired Dose and Available Concentration:
Desired Dose: 10 mg of verapamil
Available Concentration: 5 mg/2 mL
Simplify the Available Concentration:
To make the calculation easier, find the concentration per 1 mL: 5 mg / 2 mL = 2.5 mg/mL (This means there are 2.5 mg of verapamil in every 1 mL of solution)
Set up the Calculation:
We need to find the volume (in mL) that contains the desired dose of 10 mg.
We can use the following formula:
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
Plug in the Values and Calculate:
Volume (mL) = 10 mg / 2.5 mg/mL
Volume (mL) = 4 mL
Round to the Nearest Whole Number (if necessary):
4 mL
Correct Answer is ["6"]
Explanation
Calculate the Total Infusion Time in Minutes:
The infusion is to be delivered over 4 hours.
There are 60 minutes in 1 hour.
Total infusion time: 4 hours x 60 minutes/hour = 240 minutes
Calculate the Drip Rate (gtt/min):
We'll use the following formula:
Drip Rate (gtt/min) = (Total Volume (mL) x Drop Factor (gtt/mL)) / Total Infusion Time (minutes)
Plug in the Values and Calculate:
Drip Rate (gtt/min) = (100 mL x 15 gtt/mL) / 240 minutes
Drip Rate (gtt/min) = 1500 gtt / 240 minutes
Drip Rate (gtt/min) = 6.25 gtt/min
Round to the Nearest Whole Number:
6 gtt/min
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