Math Questions Flashcards
An IV is to run at 62 gtt/min. What must the drop rate be for 15 seconds?
16 gtts in 15 seconds
850 ml of D5NS is ordered to infuse over 10 hours. The set is calibrated to deliver 12 gtt/ml. After 4 hours, only 150 mLs has been infused. Re-calculate the flow rate.
Flow rate = gtt/min
23 gtt/min
a. ) There is 25,000 U of heparin in 250 ml D5W infusing at 12 ml/hr. Calculate the hourly unit dosage.
b. ) Is this dosage within the normal heparinizing range?
- Hourly infusion rate (heparin) = units/hr*
a. ) 1,200 U/hr
b. ) Yes
normal heparin range = 20,000 - 40,000 units/24 hrs
A client is to receive 1000 ml D5LR at a flow rate of 36 gtt/min, using a set calibrated to deliver 15 gtt/ml. Calculate the infusion time.
infusion time = hours and minutes
6 hours, 56 minutes
Calculate the flow rate for an IV of NS 1000 ml to run in over 12 hours, with a microdrip set.
Flow rate = gtt/min
83 gtt/min
a. ) How long will it take 1000 ml of D5NS to infuse if it is running at a rate of 75 ml/hr?
b. ) If this infusion is started at 0800, what time will it be finished?
- infusion time = hours and minutes*
a. ) 13 hours, 20 minutes
b. ) 2120 or 9:20 P.M.
A solution of 15,000 U heparin in 1000 ml D5.9%NS is infusing at 20 gtt/min. Calculate the hourly unit dosage if the set calibration is 10 gtt/ml.
Hourly infusion rate (heparin) = units/hr
1,800 units/hr
An order reads: “Infuse a solution of 15,000 U heparin in 250 ml NS at a rate of 2500 U/hr.” The set calibration is 20 gtt/ml. Calculate the flow rate.
Flow rate = gtt/min
14 gtt/min
