Steps in calculations
Identify the first step in the process for calculating a pediatric weight based dose problem
What is change the weight from lbs to kg
30 lb = ____kg
What is 13.64kg
!5lbs 5oz = ________lbs
What is 15.3125 lb
Child weighs 7.56kg. determine safe dose range in mg/kg. The literature states initial dose for Lasix is 2mg/kg body weight. What is the safe dose range
What is 15.12 mg/day or 15 mg/day
Amoxicilling 150mg po q 8h. It is available in 125mg/5 mL. the child weighs 15 kg. The literature states children <20 kg should receive 6.7 to 13.3 mg/kg q 8 hrs. calculate the dose needed
What is 6 ml
step 1- 15 kg-
step 2- 6.7x 15= 100.5 low dose and 13.3 x 15= 199.5 high dosestep 3- is the dose safe?- look at dose ordered 150mg q 8 h YES it Is safe because it falls between the 101-200 mg range
step 4- 125: 5ml = 150 : x
125x=750
750/125=6mL
Identify the second step in calculating pediatric doses
What is determine the safe dose range in mg/kg by using a reference
4lbs 5oz= _____kg
What is 1.96kg
12lb 3oz= ________lbs
What is 12.1875lbs
child weighs 1500g
The drug guide states give 20 to 30 mg/kg. Determine the low dose and high dose range
change the 1500g =1.5kg
what is 1.5x 20= 30mg low dose
what is 1.5 x 30=45mg high dose
A child weighs 16lbs 10 oz. The order is for Lasix 15 mg po bid. It is available in 10 mg/mL. the package insert states infants and children dose is 2-6 mg/kg body weight.
what is the low and high dose range
is it safe
how much will you administer
What is 1.5 ml
change weight 16lbs 10 oz to kg
16.625 lbs then to kg by dividing by 2.2 which is 7.556 but you would round to 7.56kg
step 2- determine safe dose
7.56x2=15.12 low dose
7.56 x 6-45.36 high dose
step 3 yes it is safe because dr ordered 15mg bid (15.12 low dose will round to 15 low dose)
15mg bid ordered is bid so 15 x2 is 30 mg a day and that is below the 45mg high dose a day
What is the third step in calculating a pediatric dose
What is decide whether the dose is safe
(you do this by comparing the order dose with the safe dose range listed)
convert 12lbs 3oz= ______kg
What is 5.54
15lbs 5 oz= ______lbs
What is 15. 3125 lbs
a child weighs 22 lbs. the Nursing drug guide literature states 10-15mg/kg/dose q 4 hrs
Calculate the low dose range and high dose range?
22lb=10 kg
10x10=100mg=low dose
10x15=150 mg=high dose
Lanoxin 37.5 mcg po x1 is ordered for an infant that weighs 1.5 kg
It is supplied in 0.125mg/2.5ml (50mcg/mL). The drug guide states a loading dose for premature infants is 20 to 30 mcg/kg
Is the dose safe? and what amount should be given
What is 0.
step 1 1.5 kg
step 2 determine safe dose by 1.5 x20mcg=30 mcg (low dose) 1.5 x30mcg=45 mcg (high dose)
step 3 yes the dose ordered (37.5 mcg) is safe because it falls between the 30-45 mcg safe dose range
step 4 0.125: 2.5 ml :: 0.0375: x
0.125x=0.09375
0.9375/0.125=0.75ml
or you could do the 50mcg: 1mL :: 37.5: x
50x=37.75
37.75/50=0.75 mL
What is the fourth step in calculating pediatric doses
What is calculate the dose needed to be administered
54lbs 8 oz = _____kg
What is 24.77 kg
10 1/2 lbs= _______lbs
What is 10.5 lbs
child weighs 66 lbs. the dose prescribed is 0.3mg.
the literature states 0.01mg/kg, but do not exceed 0.5mg in a single dose.
Is the dose safe?
66lbs=30 kg
30kg x 0.01mg/kg=0.3mg
What is yes the dose is safe
A child weighing 22 lbs is prescribed 100mg acetaminophen for pain. it is available in 160mg/5mL
Is this dose safe? What amount should be given (round to nearest tenth)?
the literature states 10-15mg/kg/dose q 4-6h and do not exceed 5 doses in 24 hours
step 1 22/2.2= 10 kg
step 2 determine safe dose by 10 x 10= 100mg low dose and 10 x 15= 150mg high dose
step 3 is dose safe- yes because 100mg ordered is between the ranges of 100-150mg
step 4 calculate the dose
160mg:5ml ::100mg x ml
160x=500
500/160=3.125 mL or 3.1 ml
The literature states that the dose range should be 6.7mg/kg to 13.3mg/kg q 8 hr and your infant weighs 15 kg
1. How would you calculate the low dose range and the high dose range?
2. which step in the process is this?
What is you would multiply the weight in kg by the literature ranges 6.7 x 15=100.5 (low dose)
then you would multiply the weight in kg by the literature range 13.3 x 15=199.5 (high dose)
This is step 2 and this gives you the safe dose ranges
66lb= _____kg
What is 30 kg
7 1/4 lb= ______lbS
What is 7.25 lbs
The child weighs 79 lbs. Morphine 1.8mg sub q. is prescribed. The literature states the range should be 0.05-0.2 mg/kg with a maximum dose of 15 mg.
Calculate the high dose range, is the dose safe
79 lbs.=35.909 which will be 35.91 don't forget to round to nearest hundredths
35.91 x0.2=7.182mg high dose
what is yes the dose is safe because 1.8 is ordered and its below the high dose range of 7.18
A 4 yr old child is prescribed valium 1.5mg po qid. It is available in 5mg/5mL. Is the dose safe and what amount will you give.
the drug guide states for children greater than 5 months, 1-2.5 mg po q 3-4 doses per day
step 1 no weight needed
step 2 determine safe dosage ( it gives it to you in the literature for children less than 6mos
step 3 is the dose safe? yes because the dose ordered is 1.5 mg for a 4 yr old
step 4 calculate the dose
5mg:5ml::1.5: xml
5x=7.5
7.5/5=1.5mL