IV Calculations (Pump or Flow rates)

The physician orders a continuous IV Dilaudid drip at 1 mg/h. The medication is supplied in 10 mg/100 mL. Calculate the flow rate in milliliters per hour.

10 mL/hr CALCULATION: 1mg/10mg*100mL **NOTE** When the order is given as dose/hr you revert back to the basic formula used for oral dosage. In this question the order was for 1mg/hr or dose per hour

The physician gives orders to infuse 1 unit (250 mL) of packed red blood cells over 120 minutes. Calculate the flow rate in milliliters per hour.

125mL/hr CALCULATION: Convert 120 minutes to hours (120min/60min) = 2hours 250mL/2hrs

The physician orders erythromycin 1 g in 100 mL of D5W to infuse in 45 minutes. Calculate the flow rate in milliliters per hour.

133.33 mL/hr or 133 mL/hr CALCULATION: Convert 45 minutes to hours (45min/60min)= 0.75 hours 100mL/0.75hr

The physician orders an IV of 40 mEq of potassium chloride in 750 mL 0.9% NS to infuse over 5 hours. Calculate the flow rate in milliliters per hour.

150mL/hr CALCULATION: 750mL/5hr

The physician orders a continuous IV Morphie drip at 2mg/h. The medication is supplied in 10 mg/100 mL. Calculate the flow rate in milliliters per hour.

20 mL/hr CALCULATION: 2mg/10mg*100mL **NOTE** When the order is given as dose/hr you revert back to the basic formula used for oral dosage. In this question the order was for 2mg/hr or dose per hour

Tygacil 50 mg IV once a day is ordered for a patient. The Tygacil is dissolved in 150 mL of NS and should infuse over 45 minutes. Using an IV controller, how many milliliters per hour should the Tygacil be infused?

200mL/hr CALCULATION: Convert 45 minutes to hours (45min/60min)= 0.75 hr 150mL/0.75hrs

Zosyn 4.5 g IV once a day is ordered for a patient. The Zosyn is dissolved in 250 mL of NS and should infuse over 75 minutes. Using an IV controller, how many milliliters per hour should the Zosyn be infused?

200mL/hr CALCULATION: Convert 75 minutes to hours (75min/60min)= 1.25 hour 250mL/1.25hrs

The physician orders Doribax 250 mg twice a day. The Doribax is dissolved in 250 mL of NS and is to be infused over 4 hours. Using an IV controller, how many milliliters per hour should the Doribax be infused?

62.5 mL/hr or 63 mL/hr CALCULATION: 250mL/4 hrs

The physician gives orders to infuse 1 L of lactated Ringer's in 15 hours. Calculate the flow rate in milliliters per hour.

66.66mL/hr or 67mL/hr CALCULATION: Convert 1L to mL = 1000mL 1000mL/15hr

The physician orders a continuous IV Dilaudid drip at 1.5 mg/h. The medication is supplied in 20 mg/100 mL. Calculate the flow rate in milliliters per hour.

7.5 mL/hr CALCULATION: 1.5mg/20mg*100mL **NOTE** When the order is given as dose/hr you revert back to the basic formula used for oral dosage. In this question the order was for 1.5mg/hr or dose per hour

The physician gives orders to infuse 1 unit (250 mL) of packed red blood cells over 3 hours. Calculate the flow rate in milliliters per hour.

83.33mL/hr or 83mL/hr CALCULATION: 250ml/3hr

The physician orders Pepcid 40 mg IVPB every 12 hours. The medication is supplied in 40 mg/100 mL to infuse over 30 minutes. Calculate the flow rate in milliliters per hour.

200ml/hr CALCULATION: 100mL/0.5 hour

1000 mL of NS is ordered to infuse over 4 hours. Using an IV controller, how many milliliters per hour should the NS infuse?

250mL/hr CALCULATION: 1000mL/4hrs

The patient has Ferrlecit 125 mg ordered once daily. The Ferrlecit is available in 250 mL of NS and should infuse over 60 minutes. Using an IV pump, how many milliliters per hour should the Ferrlecit be infused?

250mL/hr CALCULATION: Convert 60 minutes to hours (60min/60min)= 1 hour 250mL/1hr

The physician orders 20 mEq of potassium chloride in 75 mL 0. 9% NS to infuse over 3 hours. Calculate the flow rate in milliliters per hour.

25mL/hr CALCULATION: 75mL/3hr

The patient has Levaquin 500 mg ordered once daily. The Levaquin is available in 100 mL of NS and should infuse over 60 minutes. Using an IV pump, how many milliliters per hour should the Levaquin be infused?

100mL/hr CALCULATION: Convert 60 minutes to hours (60min/60min) = 1 hour 100mL/1hr

Zyvox 600 mg IV once a day is ordered for a patient. The Zyvox is dissolved in 150 mL of NS and should infuse over 90 minutes. Using an IV controller, how many milliliters per hour should the Zyvox be infused?

100mL/hr CALCULATION: Convert 90 minutes to hours (90min/60min)= 1.5 hours 150mL/1.5hr

TPN 2500 mL is ordered to infuse from 0200 to 2200. Using an IV controller, how many milliliters per hour should the TPN infuse?

125mL/hr CALCULATION: 0200 thru 2200=20 hrs 2500mL/20hrs

TPN 1500 mL is ordered to infuse over 12 hours. Using an IV controller, how many milliliters per hour should the TPN infuse?

125mL/hr CALCULATION: 1500mL/12hrs

The physician orders 40 mEq of potassium chloride in 250 mL 0.9% NS to infuse over 2 hours. Calculate the flow rate in milliliters per hour.

125mL/hr CALCULATION: 250mL/2hrs

The patient has D5W 1750 mL ordered over 10 hours. Using an IV pump, how many milliliters per hour should the IV fluids infuse?

175mL/hr CALCULATION: 1750mL/10hrs

The physician orders a continuous IV Morphine drip at 7 mg/h. The medication is supplied in 25 mg/100 mL. Calculate the flow rate in milliliters per hour.

28 mL/hr CALCULATION: 7mg/25mg*100mL **NOTE** When the order is given as dose/hr you revert back to the basic formula used for oral dosage. In this question the order was for 7mg/hr or dose per hour

Azithromycin 500 mg IV once a day is ordered for a patient. The azithromycin is dissolved in 250 mL of NS and should infuse over 45 minutes. Using an IV controller, how many milliliters per hour should the azithromycin be infused?

333.33mL/hr or 333 mL/hr CALCULATION: Convert 45 minutes to hours (45min/60min)= 0.75 hr 250mL/0.75hr

The physician orders a continuous IV Dilaudid drip at 0.75 mg/h. The medication is supplied in 15 mg/100 mL. Calculate the flow rate in milliliters per hour.

5 mL/hr CALCULATION: 0.75mg/15mg*100mL **NOTE** When the order is given as dose/hr you revert back to the basic formula used for oral dosage. In this question the order was for 0.75mg/hr or dose per hour

The patient has vancomycin 1250 mg ordered once daily. The vancomycin is available in 250 mL of NS and should infuse over 30 minutes. Using an IV pump, how many milliliters per hour should the vancomycin infuse?

500mL/hr CALCULATION: Convert 30 minutes to hours (30min/60min)= 0.5 hour 250mL/0.5hrs