1. Neonatal Drug Calculations Practice Questions
D. Ann Currie ,RN,MSN

2. Question # 1
How many milliliters per kilogram per day is the neonate receiving, if the neonate is receiving D10W at 7.25 ml/hr for 24 hours and Fat Emulsion 20% solution at 4.5 ml/hr for 20 hours. Neonate weighs 4.7 lbs.
ml/kg/day

3. ml/kg/day
𝑚𝑙 ℎ𝑟 x 24 ℎ𝑟 𝑑𝑎𝑦 x 2.2𝑙𝑏𝑠 1𝑘𝑔 x 1 4.7𝑙𝑏𝑠 = =
𝑚𝑙 ℎ𝑟 x 20ℎ𝑟 𝑑𝑎𝑦 x 2.2𝑙𝑏𝑠 𝑘𝑔 x 𝑙𝑏𝑠 = =
ans ml/kg/day

4. Question # 2
The infant, who weighs 2,375 grams, is getting 150 mg/ kg/ day of Ampicillin in 4 equal doses, How many milligrams per dose should be given?
mg/dose

5. mg/dose wt. 2375 grams 2375 grams= 2.375 Kg.
150𝑚𝑔 𝑘𝑔/𝑑𝑎𝑦 x 𝑘𝑔 1 x 𝑑𝑎𝑦 4𝑑𝑜𝑠𝑒𝑠 = =
ans mg/dose

6. Question # 3
The infant, who weighs 2,855 grams, will receive how many micrograms per kilogram per minute when the Dopamine is infusing at 750 mcg/kg/hr
mcg/kg/min

7. mcg/kg/min wt. 2855gm 2855 grams =2.855 kg.
750𝑚𝑐𝑔 𝑘𝑔/ℎ𝑟 x 1ℎ𝑟 60𝑚𝑖𝑛 = = 12.5
ans mcg/kg/min

8. Question # 4
The neonate, who weighs 3 lbs 10 oz, will receive how many milligrams per minute of Dopamine when the infant is getting 950 mg/kg/hr.
mg/min

9. mg/min Wt = 3 lbs. 10 oz.= 3. 625 lbs 10/16= .625 & 3 = 3.625
950𝑚𝑐𝑔 𝑘𝑔/ℎ𝑟 x 𝑘𝑔 2.2𝑙𝑏𝑠 x 𝑙𝑏𝑠 𝑘𝑔 x ℎ𝑟 60𝑚𝑖𝑛 =
ans mg/min

10. Question # 5
The baby, who weighs 1,667 grams, has an IV of Dopamine 35 milligrams in 100 milliliters and is getting 12.5 mcg/kg/minute. What will the nurse set the IV infusion rate at to delivery 12.5 mcg/kg/min?
ml/hr

11. ml/hr wt gm.
Wt grams =1.667 kg
100𝑚𝑙 35𝑚𝑔 X 1𝑚𝑔 1000𝑚𝑐𝑔 X 12.5𝑚𝑐𝑔 𝑘𝑔/𝑚𝑖𝑛 X 𝑘𝑔 1 X 60𝑚𝑖𝑛 ℎ𝑟 = =
ans ml/hr

12. Question # 6
The neonate weighs 1,922 grams. The physician has ordered Gentamycin 2 mg per kilogram per dose stat and then every 18 hours for 7 days.
A. What is the total number of doses the neonate will receive in 7 days?
total number of doses in 7 days
B. How many total milligrams will the neonate receive in 7 days?
mg in 7 days.

13. A. total number of doses in 7 days Doses /TT
wt grams = kg
Stat =1 dose & doses in 7days
7 days = 7 X 24 hrs = 168 hrs.÷ 18hrs per dose = doses
1 & 9 = 10 doses
10 total doses in 7days ÷

14. B. mg in 7 days=TT. Wt. 1.922 kg 10 doses in 7 days =TT
2𝑚𝑔 𝑘𝑔/𝑑𝑜𝑠𝑒 X 𝑘𝑔 1 X 10 𝑑𝑜𝑠𝑒𝑠 𝑇𝑇 = 38.44
ans mg in 7 days

15. Question # 7
The physician has ordered Dexamethasone 0.65 mg/kg/day with a dose to be given every 6 hours. The infant weighs 3 lbs. 8 oz.
A. How many milligrams per dose will the infant receive?
mg/dose
B. How many milligrams will the infant receive in 24 hours?
mg/24 hrs

16. A. mg/dose Wt. 3 lbs. 8 oz. = 3.5 lbs ( 8/16= .5 & 3=3.5)
every 6hrs = 4 doses/day
0.65𝑚𝑔 𝑘𝑔/𝑑𝑎𝑦 X 𝑘𝑔 2.2𝑙𝑏𝑠 X 3.5𝑙𝑏𝑠 1 X 𝑑𝑎𝑦 4𝑑𝑜𝑠𝑒𝑠 = =
= 0.26
ans mg/dose

17. B. mg/24 hrs Mg/TT or mg/day Wt.= 3.5 lbs.
0.65𝑚𝑔 𝑘𝑔/𝑑𝑎𝑦 X 𝑘𝑔 2.2𝑙𝑏𝑠 X 3.5𝑙𝑏𝑠 1 = =
= 1.03
ans mg/day or 24 hrs

18. Question # 8
The baby, who weighs 3222 grams, received 9 ml/hr for 18 hrs and then it was decreased to 7ml/hr for 6 hours. Also the baby received a fat emulsion 20% solution at 2.75 ml/hr for 21 hours. The baby took 28 ml per each feeding for 4 feedings of formula 24 cal/oz and then 32 ml per each feeding for 4 feedings. How many calories did the baby receive in 24 hours?
calories/24 hours

19. Calories/24 hours Wt. 3222 grams =3.222 kg 1 oz.=30 ml. Calories :
a. 1 gram glucose=4 calories or 3.4 calories
b. intralipids 10%= 1.1calories/ 1 ml
20%= 2.2calories/ 1ml
c. formula= 24 calories/ oz

20. IV calories
1) cal/day =
a. 4𝑐𝑎𝑙 1𝑔𝑚 X 10𝑔𝑚 100𝑚𝑙 X 9𝑚𝑙 ℎ𝑟 X 18ℎ𝑟𝑠 𝑑𝑎𝑦 = =
64.8
b. 4𝑐𝑎𝑙 1𝑔𝑚 X 10𝑔𝑚 100𝑚𝑙 X 7𝑚𝑙 ℎ𝑟 X 6ℎ𝑟𝑠 𝑑𝑎𝑦 = =
16.8
& 16.8
81.6

21. Intralipids calories 2) cal/day
2.2𝑐𝑎𝑙 1𝑚𝑙 X 2.75𝑚𝑙 ℎ𝑟 X 21ℎ𝑟𝑠 𝑑𝑎𝑦 =

22. Formula Calories Cal/day
3) a. 24𝑐𝑎𝑙 𝑜𝑧 X 𝑜𝑧 30𝑚𝑙 X 28𝑚𝑙 1𝑓𝑒𝑒𝑑𝑖𝑛𝑔 X 4 𝑓𝑒𝑒𝑑𝑖𝑛𝑔𝑠 𝑑𝑎𝑦 = = 89.6
b. 24𝑐𝑎𝑙 𝑜𝑧 X 𝑜𝑧 30𝑚𝑙 X 32𝑚𝑙 1 𝑓𝑒𝑒𝑑𝑖𝑛𝑔 X 4 𝑓𝑒𝑒𝑑𝑖𝑛𝑔𝑠 𝑑𝑎𝑦 = = 102.4
89.6
& 102.4
192

23. Calories per day
81.6
127.05
& 192
ans calories per day or
3.4 cal/1 gm glucose
69.36
& 191.9
ans calories per day

24. Question # 9
The infant, who weighs 5 lbs 4 oz, is receiving D12.5W at 4.5 ml/hr for 24 hours intralipids 20% solution at 3.5 ml/hr for 20 hours, and Similac 20 cal/oz every 3 hours with each feeding being 22 milliliters. Also microlipids 1 ml per 1 oz of formula will be added to formula. How may calories per kilogram per day is the infant receiving?
cal/kg/day

25. Calories /kg/day Wt. 5lbs 4oz = 5. 25 lbs ( 4/16=.25 & 5=5.25)
IV 1gram of glucose = 4 calories or 3.4 calories
intralipids 20%= 2.2calories/ 1 ml
formula= 20calories/1 oz
microlipids= 4.5calories/ 1ml

26. IV Calories Cal/kg/day
4𝑐𝑎𝑙 1𝑔𝑚 X 12.5𝑔𝑚 100𝑚𝑙 X 4.5𝑚𝑙 ℎ𝑟 X 24ℎ𝑟𝑠 𝑑𝑎𝑦 X 2.2𝑙𝑏𝑠 𝑘𝑔 X 𝑙𝑏𝑠 = =

27. Intralipids Calories Cal/kg/day
2.2𝑐𝑎𝑙 1𝑚𝑙 X 3.5𝑚𝑙 ℎ𝑟 X 20ℎ𝑟𝑠 𝑑𝑎𝑦 X 2.2𝑙𝑏𝑠 𝑘𝑔 X 𝑙𝑏𝑠 X =

28. Formula Calories Cal/kg/day
20𝑐𝑎𝑙 𝑜𝑧 X 1 0𝑧 30𝑚𝑙 X 22𝑚𝑙 3ℎ𝑟𝑠 X 24ℎ𝑟𝑠 𝑑𝑎𝑦 X 2.2𝑙𝑏𝑠 𝑘𝑔 X 𝑙𝑏𝑠 = =

29. Microlipids Calories Cal/kg/day
4.5𝑐𝑎𝑙 1 𝑚𝑙 X 1𝑚𝑙 1 0𝑧 X 1 𝑜𝑧 30 𝑚𝑙 X 22𝑚𝑙 3ℎ𝑟𝑠 X 24ℎ𝑟𝑠 𝑑𝑎𝑦 X 2.2 𝑙𝑏𝑠 𝑘𝑔 X 𝑙𝑏𝑠 = =

30. Calories/kg/day
& cal
ans cal/kg/day
cal
ans cal/kg/day

31. The End
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