Advanced Order & Supply IV Nursing Calculations Nursing 201
These are some example advanced order & supply IV nursing calculation problems using Dimensional Analysis.
by: Jennifer Cook 2015
Advanced Order & Supply IV Nursing Calculations 2015 Advanced Order & Supply Nursing Calculations Nursing 201 1. Order: lidocaine 4 mg/min Supply: lidocaine 1 g in 500 mL D5W Flow rate: 120 mL/h 500 1 mL 1g =
240 2
4 mg min
1g 1000 2 mg
60 min 1h
1 mg 1000 1 mcg
60 min 1 hr
= 120 mL/h
2. Order: terbutaline 10 mcg/min for 30 min Supply: terbutaline 5 mg in 500 mL D5W Flow rate: 60 mL/h 500 mL 5 mg 30,000 500
10 1 mcg min
= 60 mL/h
3. Order: procainamide at 60 mg/h Supply: procainamide 1 g in 1 L D5W Flow rate: 60 mL/h 1000 mL 1000 mg (= 1 g) =
6000 100
60 mg 1h
= 60 mL/h
Jennifer Cook ~ Module B Practice Problems w/Answers
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Advanced Order & Supply IV Nursing Calculations 2015 4. Order: procainamide at 40 mL/h Supply: procainamide 1 g in 500 mL D5W Safe dosage range for this drug is 1 to 6 mg/min. Flow rate: 1 mg/min Is ordered flow rate safe? Yes 1000 mg (= 1 g) 500 mL =
4000 3000
40 mL 1h
1h 60 min
= 1.3 mg/min or rounded down is 1 mg/min
5. Order: dobutamine 5 mcg/kg/min for client weighing 176 pounds Supply: dobutamine 250 mg in 250 mL D5W Flow rate: 24 mL/h 250 1 mL 250 50 mg =
10560 440
5 1 mcg kg/min
60 min 1h
1 mg 1000 4 mcg
176 lbs
1 kg 2.2 lbs
= 24 mL/h
6. Order: propofol at 30 mcg/kg/min for client weighing 75 kg Supply: propofol 7500 mg in 500 D5W Flow rate: 9 mL/h 500 1 mL 7500 mg
30 mcg kg/min
60 min 1h
Jennifer Cook ~ Module B Practice Problems w/Answers
1 mg 1000 2 mcg
75 kg
2
Advanced Order & Supply IV Nursing Calculations 2015 =
13500 1500
= 9 mL/h
7. Order: dopamine 400 mg in 250 mL D5W at 500 mcg/min for a client weighing 110 pounds Safe dosage range is 5 to 10 mcg/kg/min Is ordered mcg/min safe? Yes (See Below) 110 lbs
=
110 2.2
1 kg 2.2 lbs
= 50 kg
Low Dose
High Dose
5
10
đ?‘šđ?‘?đ?‘” đ?‘˜đ?‘”
/đ?‘šđ?‘–đ?‘› Ă— 50 đ?‘˜đ?‘” = 250 mcg/min
đ?‘šđ?‘?đ?‘” đ?‘˜đ?‘”
/đ?‘šđ?‘–đ?‘› Ă— 50 đ?‘˜đ?‘” = 500 mcg/min
No: The range is 250 mcg/min to 500 mcg/min. If so, what is the flow rate? 19 mL/h
=
250 mL
500 1 mcg
60 min
1 mg
400 mg
min
1h
1000 2 mcg
15000 800
= 18.75 mL/h or rounded up 19 mL/h
8. Order: KCl at 2 mEq/h Supply: KCl 40 mEq in 1 L NS Flow rate: 50 mL/h
Jennifer Cook ~ Module B Practice Problems w/Answers
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Advanced Order & Supply IV Nursing Calculations 2015 2 mEq/h 40 mEq =
2,000 đ?‘šđ?‘™/â„Ž 40
1L
1000 mL 1L
= 50 mL/h
Refer to the following for questions 9 and 10 Order: Restrict fluids 2 L per 24 h. Primary IV NS via infusion pump. gentamicin 150 mg IVPB q. 6h in 100 mL of NS to infuse in 1 h Drop factor: 15 gtt/mL
9. IVPB flow rate: 25 gtt/min
1500 60
15 gtts
100 mL
1h
mL
1h
60 min
= 25 gtts/min
10. IV flow rate: 20 gtt/min Total Fluid = 2000 mL Patient will receive IVPB fluid q 6 h. That is 4 times (or 4 h) in 24 h, so: IVPB Fluid = 100 mL of NS x 4h = 400 mL Regular Fluid = 2000 mL – 400 mL (IVPB Fluid) = 1600 mL (Regular Fluid) Regular Fluid Infusion Time = 24 h (Total hours to infuse) – 4 h (IVPB infusion time) = 20 h to infuse the 1600 mL of Regular Fluid. 15 gtts mL =
24,000 1,200
1,600 mL 20 h
1h 60 min
= 20 gtts/min
Jennifer Cook ~ Module B Practice Problems w/Answers
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