Question

6) A client is prescribed 500 mL of intravenous fluid in 4 hours. What is the flow rate of this Infusion in ml/hr? 7) The doctor orders 1000 ML. NS from 6 AM to 6 PM. The IV tubing delivers 15 gtt/mL. Calculate the flow rate for this IV in drops/minute. 7) 8) A doctor orders 500 mg of medication in an IV infusion of 500 mL DSW, 0.006 mg/kg/min. The patient weighs 180 lb. Calculate the flow rate in ml./hr. 9) For an infusion pump, you must calculate the flow rate in ml/hr. If a doctor orders an IV of 9) 500 ml fluid to be infused over 5 hours, calculate the flow rate in ml/hr. 10) 10) A patient is given an IV of 1000 mL D5W. The flow rate is 25 gtt/min and the set calibration is 15 gtt/mL. How long will it take this infusion to finish? Write your answer in hours and minutes 11) 11) A physician orders 750 ml. DSRL to be given to a patient. The flow rate is 12 gtt/min and the drop factor is 10 gtt/mL. If the IV is started at 7:00 AM what time will the infusion be complete? Write your answer in military time

Answer 1

6.Volume to be infused = 500 ml

Time = 4 hours

Flow rate(ml/hr) = Volume to be infused $\div$ Time in hours

= 500/4 = 125 ml/hr

7.Volume to be infused = 1000 ml

Time = 6am to 6pm = 12 hours = 12 x 60 = 720 minutes

Drop factor = 15 gtt/ml

Flow rate (gtt/min) =( Volume to be infused x Drop factor) $\div$ Time in minutes

= (1000 ml x 15 gtt/ml )$\div$ 720ml

= 20.83 = 21 gtt/min

8. Dose ordered = 0.006 mg/kg/min = 0.006 x 1000 = 6 mcg/kg/min

Weight of the patient = 180 lb = 180/2.2 = 81.81 = 82 kg

Available dose = 500 mg = 500 x 1000 = 500000 mcg

Drug volume = 500 ml

Drug concentration = 500000 mcg/ 500 ml

= 1000 mcg/ml

ml/hr = (Dose ordered x weight in kg x time in minutes) $\div$ Drug concentration

= (6 x 82 x 60) $\div$ 1000

= 29.52 = 30 ml/hr

9.Volume to be infused = 500 ml

Time = 5 hours

Flow rate ( ml/hr) = Volume to be infused $\div$ Time in hours

= 500 ml/5 hours

= 100 ml/hr

10. Volume to be infused = 1000 ml

Flow rate ( gtt/min) = 25 gtt/min

Drop factor = 15 gtt/ml

gtt/min = (Volume to be infused x Drop factor )$\div$ Time in minutes

25 = (1000 x 15) $\div$ Time in minutes

Time in minutes = (1000 x 15) $\div$ 25

= 600 minutes

Time in hours = 600 $\div$ 60 = 10 hours

Time in hours and minutes = 10 hours and 0 minutes

11.Volume to be infused = 750 ml

Flow rate = 12 gtt/min

Drop factor = 10 gtt/ml

gtt/min = (Volume to be infused x Drop factor) $\div$ Time in minutes

12 = (750 x 10) $\div$ Time in minutes

Time in minutes = 7500 $\div$ 12 = 625 minutes

Time in hours= 10 hours and 25 minutes

IV started at 7.00 am

Infusion will finish at 7.00 am + 10 hours and 25 minutes = 2 .25 pm = 1425 hours

Infusion will finish at military time 1425 hours