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HLTH 1210/LPN-C IV Calculation Practice Problems I

HLTH 1210/LPN-C IV Calculation Practice Problems I. You are to infuse 800 mL of Lactated Ringer’s over 20 hours using an IV administration set that delivers 20 gtt/mL. What is the drip rate? What is the drip rate of the above order if it is to be delivered over 10 hours?.

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HLTH 1210/LPN-C IV Calculation Practice Problems I

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  1. HLTH 1210/LPN-CIV Calculation Practice Problems I • You are to infuse 800 mL of Lactated Ringer’s over 20 hours using an IV administration set that delivers 20 gtt/mL. What is the drip rate? • What is the drip rate of the above order if it is to be delivered over 10 hours?

  2. Practice Problems (cont’d) • You are to infuse 800 mL of Lactated Ringer’s over 20 hours using an IV administration set that delivers 20 gtt/mL. What is the drip rate? 800mL x 20gtt/mL = 16,000gtt = 16,000gtt = 13gtt/min 20h 20h(60min) 1,200min 2) What is the drip rate of the above order if it is to be delivered over 10 hours?

  3. Practice Problems (cont’d) • You are to infuse 800 mL of Lactated Ringer’s over 20 hours using an IV administration set that delivers 20 gtt/mL. What is the drip rate? 800mL x 20gtt/mL = 16,000gtt = 16,000gtt = 13gtt/min 20h 20h(60min) 1,200min 2) What is the drip rate of the above order if it is to be delivered over 10 hours? 16,000gtt = 16,000gtt = 27gtt/min 10h(60min) 600min

  4. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 3) 2000 mL D5W in 24 hours:______ 4) 500 mL D5W in 12 hours:______ 5) 1500 mL 0.9 NS in 24 hours:______ 6) 750 mL LR in 16 hours:______

  5. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 3) 2000 mL D5W in 24 hours: 2000mL = 83mL/h 24h 4) 500 mL D5W in 12 hours:______ 5) 1500 mL 0.9 NS in 24 hours:______ 6) 750 mL LR in 16 hours:______

  6. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 3) 2000 mL D5W in 24 hours: 2000mL = 83mL/h 24h 4) 500 mL D5W in 12 hours: 500mL = 42mL/h 12h 5) 1500 mL 0.9 NS in 24 hours:______ 6) 750 mL LR in 16 hours:______

  7. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 3) 2000 mL D5W in 24 hours: 2000mL = 83mL/h 24h 4) 500 mL D5W in 12 hours: 500mL = 42mL/h 12h 5) 1500 mL 0.9 NS in 24 hours: 1500mL = 63mL/h 24h 6) 750 mL LR in 16 hours:______

  8. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 3) 2000 mL D5W in 24 hours: 2000mL = 83mL/h 24h 4) 500 mL D5W in 12 hours: 500mL = 42mL/h 12h 5) 1500 mL 0.9 NS in 24 hours: 1500mL = 63mL/h 24h 6) 750 mL LR in 16 hours: 750mL = 47mL/h 16h

  9. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 7) 30 mL of antibiotic in 0.9 NS in 20 min:_______ 8) 100 mL 0.45% NS in 45 min:_______ 9) 180 mL 0.9 NS in 60 min:_______ 10) 150 mL D5W in 30 min:_______

  10. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 7) 30 mL of antibiotic in 0.9 NS in 20 min: 30mL = 20min = 20X = 30mL(60min) ~ X = 1800 = 90mL/h X mL 60min 20 20min 20 8) 100 mL 0.45% NS in 45 min:_______ 9) 180 mL 0.9 NS in 60 min:_______ 10) 150 mL D5W in 30 min:_______

  11. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 7) 30 mL of antibiotic in 0.9 NS in 20 min: 30mL = 20min = 20X = 30mL(60min) ~ X = 1800 = 90mL/h X mL 60min 20min 20min 20 8) 100 mL 0.45% NS in 45 min: 100mL = 45min = 45X = 6000min/mL = 133mL/h X mL 60min 45min 9) 180 mL 0.9 NS in 60 min:_______

  12. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 8) 100 mL 0.45% NS in 45 min: 100mL = 45min = 45X = 6000min/mL = 133mL/h X mL 60min 45min 9) 180 mL 0.9 NS in 60 min: 180mL = 180mL/h 60min 10) 150 mL D5W in 30 min:

  13. Practice Problems (cont’d) Calculate the mL/h of the following orders via IV pump: 8) 100 mL 0.45% NS in 45 min: 100mL = 45min = 45X = 6000min/mL = 133mL/h X mL 60min 45min 9) 180 mL 0.9 NS in 60 min: 180mL = 180mL/h 60min 10) 150 mL D5W in 30 min: 150mL = 30min = 30X = 9000min/mL = 300mL/h X mL 60min 30min

  14. Practice Problems (cont’d) Calculate how long the following orders will take to infuse: 11) 2000 mL of D5W with a drip rate of 160 mL/h. 12) A patient is prescribed 1 L of NS. The drip rate is set at 150 mL/h.

  15. Practice Problems (cont’d) Calculate how long the following orders will take to infuse: 11) 2000 mL of D5W with a drip rate of 160 mL/h. 2000mL = X h = 160X = 2000mL/h = 12 ½ h 160mL 1h 160mL 12) A patient is prescribed 1 L of NS. The drip rate is set at 150 mL/h.

  16. Practice Problems (cont’d) Calculate how long the following orders will take to infuse: 11) 2000 mL of D5W with a drip rate of 160 mL/h. 2000mL = X h = 160X = 2000mL/h = 12 ½ hours 160mL 1h 160mL 12) A patient is prescribed 1 L of NS. The drip rate is set at 150 mL/h. 1000mL = X h = 150X = 1000mL/h = 6.7 hours 150mL 1h 150mL

  17. Practice Problems (cont’d) 13) You have an order for epinephrine to be infused at 30 mL/h. The solution available is 2 mg of epinephrine in 250 mL D5W. Calculate the mg/h and the mcg/min. 14) Aminophyline 0.25 g is added to 500 mL D5W to infuse in 8 hrs. Calculate the mg/h and mg/min.

  18. Practice Problems (cont’d) 13) You have an order for epinephrine to be infused at 30 mL/h. The solution available is 2 mg of epinephrine in 250 mL D5W. Calculate the mg/h and the mcg/min. 2mg = 250mL = 250X = 60mg/mL = 0.24mg/h X mg 30mL 250mL 240mcg/h = 4mcg/min 60min 14) Aminophyline 0.25 g is added to 500 mL D5W to infuse in 8 hrs. Calculate the mg/h and mg/min.

  19. Practice Problems (cont’d) 13) You have an order for epinephrine to be infused at 30 mL/h. The solution available is 2 mg of epinephrine in 250 mL D5W. Calculate the mg/h and the mcg/min. 2mg = 250mL = 250X = 60mg/mL = 0.24mg/h X mg 30mL 250mL 240mcg/h = 4mcg/min 60min 14) Aminophyline 0.25 g is added to 500 mL D5W to infuse in 8 hrs. Calculate the mg/h and mg/min. 0.25g = 250mg = 31mg/h and 31mg = 0.5mg/min 8h 60min

  20. Practice Problems (cont’d) 15) You receive an order to infuse 500 mL 0.45% NS with 30,000 U heparin at 600 U/h. The drop factor is 10 gtt/mL. What is the gtt/min? 16) A patient is to receive Pitocin at 15 microgtt/min. The solution contains 10 U Pitocin in 1,000 mL D5W. Calculate the number of units of Pitocin the patient is receiving per hour.

  21. Practice Problems (cont’d) 15) You receive an order to infuse 500 mL 0.45% NS with 30,000 U heparin at 600 U/h. The drop factor is 10 gtt/mL. What is the gtt/min? 30,000U = 500mL = 30,000X = 300,000U/mL = 10mL 600U X mL 30,000U 10mL x 10gtt/mL = 100gtt = 1.67gtt/min 60min 60min 16) A patient is to receive Pitocin at 15 microgtt/min. The solution contains 10 U Pitocin in 1,000 mL D5W. Calculate the number of units of Pitocin the patient is receiving per hour.

  22. Practice Problems (cont’d) 16) A patient is to receive Pitocin at 15 microgtt/min. The solution contains 10 U Pitocin in 1,000 mL D5W. Calculate the number of units of Pitocin the patient is receiving per hour. 15microgtt/min x 60min = 900microgtt/h 60microgtt = 1mL = 60X = 900mgtt/mL = 15mL/h 900microgtt X mL 60mgtt 10U = 1000mL = 1000X = 150U/mL = 0.15U/h X U 15mL 1000U/mL

  23. Practice Problems (cont’d) 17) You have an order for 3 mcg/kg/min of Nipride. You have available 50 mg of Nipride in 250 mL D5W. The client’s weight is 60 kg. Calculate the flow rate in mL/h that will deliver the correct dose. 18) A nitroglycerin drip is infusing at 3 mL/h. The solution available is 50 mg of nitroglycerin in 250 mL D5W. Calculate mcg/min.

  24. Practice Problems (cont’d) 17) You have an order for 3 mcg/kg/min of Nipride. You have available 50 mg of Nipride in 250 mL D5W. The client’s weight is 60 kg. Calculate the flow rate in mL/h that will deliver the correct dose. 3mcg x 60kg = 180mcg/min = 10.8mg/h 50mg = 250mL = 50X = 2700mL/mg = 54mL/h 10.8mg X mL 50mg 18) A nitroglycerin drip is infusing at 3 mL/h. The solution available is 50 mg of nitroglycerin in 250 mL D5W. Calculate mcg/min.

  25. Practice Problems (cont’d) 18) A nitroglycerin drip is infusing at 3 mL/h. The solution available is 50 mg of nitroglycerin in 250 mL D5W. Calculate mcg/min. 50mg = 250mL = 250X = 150mg/mL = 0.6mg X mg 3mL 250mL 0.6mg = 600mcg = 10mcg/min 60min

  26. Practice Problems (cont’d) 19) A dose strength of 0.3 g of a medication has been ordered to infuse over 20 minutes. The available dosage is 0.4 g/1.5 mL. Calculate the mL/h. 20) A dose strength of gr ¼ of a push medication is ordered. The available dosage is 15 mg/mL. Calculate the mL you will administer.

  27. Practice Problems (cont’d) 19) A dose strength of 0.3 g of a medication has been ordered to infuse over 20 minutes. The available dosage is 0.4 g/1.5 mL. Calculate the mL/h. 0.4g = 1.5mL = 0.4X = 0.45mL/g = 1.125mL 0.3g X mL 0.4g 1.125mL = 20min = 20X = 67.5mL/min = 3mL/h X mL 60min 20min 20) A dose strength of gr ¼ of a push medication is ordered. The available dosage is 15 mg/mL. Calculate the mL you will administer.

  28. Practice Problems (cont’d) 20) A dose strength of gr ¼ of a push medication is ordered. The available dosage is 15 mg/mL. Calculate the mL you will administer. gr 1 = 60mg so gr ¼ = 15mg 15mg = 1mL (Administer 1mL)

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