fluid and drug calculation

1. FLUID AND DRUG
CALCULATION
PRESENTED BY
CLINCY MIRANDA
MSC(N) Ist YR
MMMCON

2. INTRODUCTION
• Intravenous fluid therapy for routine maintenance refers to the
provision of iv fluids and electrolytes for patient who cannot meet
their needs.
DOSE PER MIN = AMOUNT OF FLUID TO BE INFUSED * DROP FACTOR
--------------------------------------------------------------------
TOTAL TIME IN HRS * 60
Amt of fluid to be infused = 300ml
Drop factor = 60
Time to be infused = 6 hours

3. Cont..
300 * 60
------------
6 * 60
= 50 drops/min

4. Cont..
• Calculating infusion time
Inf. Time = total vol to be infused
-----------------------------
ml/hr being infused
Total vol = 500ml
ml / hr being infused = 75ml / hr
500ml
= ----------- = 6.6
75
Fluid administered over 6.6 hours

5. Drug calculation
Fried’s formula
age of the child (in months)
Child’s dose = ------------------------------------ * adult dose
150
Young’s formula
age of the child in years
Child dose = ------------------------------- * adult dose
age in years + 12

6. Cont..
Clark’s formula
wt of the child
Child dose = --------------------- * adult dose
150
Dillings formula
age(years)
Dose of the child = ------------------ * adult dose
20

7. Application
• Eg
Master Hari is a 5 year old male patient who weighs 46 ponds. The
doctor wants to give Captopril, the adult dose is 12.5mg. What is the
acceptable dose?
Youngs formula
5
------ * 12.5 = 3.6 mg
5+12

8. cont
Clarks rule
1 kg = 2.2 ponds
46
--------- * 12.5 = 3.8 mg
150

9. cont
Frieds formula
Baby Preethi is a four weeks infant who weights 3.6 kg. the doctor wants to
give Captopril. What is the acceptable dose.
4 weeks = 1 month
1
------------ * 12.5 = 0.083mg
150

10. cont
Dilling formula
what will be the dose for a child of 10 years if the adult dose of a drug
is 600mg?
10
= ----------* 600
20
child dose = 300mg

11. CONCLUSION & SUMMARY

12. TAKE HOME WORK
How many milligrams of Zofran will a 10 year old child receive if the
adult dose is 4 mg?

13. THANK YOU!!!