Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
A nurse is preparing to administer clindamycin 1,200 mg IV bolus over 1 hr to a client who is allergic to penicillin. Available is clindamycin 1,200 mg in dextrose 5% in water 100 mL. The drop factor on the manual IV tubing is 15 gtt/mL. The nurse should set the 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.)
This question is an excerpt from Nurse Dive's nursing test bank - Dosage calculations RN adult medical surgical assessment 3.1 proctored exam. Take the full exam now
Full Explanation
To calculate the flow rate in drops per minute (gtt/min) for the IV infusion of clindamycin, you can use the following formula:
Flow rate (gtt/min) = (Volume to be infused (mL) * Drop factor) / Time (minutes)
First, you need to determine the volume to be infused. In this case, it's 100 mL. The drop factor is given as 15 gtt/mL, and the time is 60 minutes (1 hour).
Now, plug these values into the formula:
Flow rate (gtt/min) = (100 mL * 15 gtt/mL) / 60 minutes
Flow rate (gtt/min) = (1500 gtt) / 60 minutes
Flow rate (gtt/min) = 25 gtt/min
So, the nurse should set the flow rate to deliver 25 gtt/min for the IV infusion of clindamycin.
Similar Questions
A nurse is preparing to administer penicillin G potassium 1,000,000 units intermittent IV bolus. The label on the vial indicates to reconstitute with 50 ml of sterile water to make penicillin G potassium 100,000 units/ml. How many ml, should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Full Explanation
To determine how many milliliters (mL) of the reconstituted penicillin G potassium to administer, you can use the following calculation:
Given:
- Reconstituted concentration: 100,000 units/mL
- Total dose to be administered: 1,000,000 units
Now, use the formula:
Volume (mL) = Total dose (units) / Concentration (units/mL)
Volume (mL) = 1,000,000 units / 100,000 units/mL
Volume (mL) = 10 mL
So, the nurse should administer 10 mL of the reconstituted penicillin G potassium.
A nurse is preparing to administer cefazolin 1 g intermittent IV bolus in 0.9% sodium chloride 250 mL over 30 min. The drop factor on the manual V tubing is 10 gtt/ml. The nurse should set the manual 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.)
Full Explanation
To calculate the manual IV flow rate in drops per minute (gtt/min), you can use the following formula:
Flow rate (gtt/min) = (Volume to be infused in mL / Time in minutes) * Drop factor (gtt/mL)
Given:
- Volume to be infused = 250 mL
- Time in minutes = 30 minutes
- Drop factor = 10 gtt/mL
Now, plug these values into the formula:
Flow rate (gtt/min) = (250 mL / 30 min) * 10 gtt/mL
Flow rate (gtt/min) = (8.33) * 10
Flow rate (gtt/min) ≈ 83.3
Rounded to the nearest whole number, the nurse should set the manual IV flow rate to deliver approximately 83 gtt/min.
A nurse is preparing to administer amoxicillin 775 mg PO. Available is amoxicillin oral suspension 400 mg/5 mL. How many ml should the c administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero)
Full Explanation
To calculate the volume in milliliters (mL) of amoxicillin oral suspension needed to administer 775 mg, you can use the following formula:
Volume (mL) = (Desired dose in mg / Concentration in mg/mL)
Given:
- Desired dose = 775 mg
- Concentration = 400 mg/5 mL
First, calculate the concentration in mg/mL by dividing 400 mg by 5 mL:
Concentration = 400 mg / 5 mL = 80 mg/mL
Now, use the formula to calculate the volume in mL:
Volume (mL) = (775 mg / 80 mg/mL)
Volume (mL) ≈ 9.69 mL
Rounded to the nearest whole number, the nurse should administer approximately 10 mL of amoxicillin oral suspension to provide a dose of 775 mg.