NUR246 PRACTICE DOSAGE CALCULATION ASSESSMENT ANSWERS
Suffolk County Community College
School of Nursing
1.
_200mg___
The physician orders Augmentin (amoxicillin and clavulanate potassium) oral
suspension 20 mg/kg/day po in divided in three equal doses.
Patients weight: 66 lbs
How many millilgrams should be administered for one dose?
66/2.2= 30 kg
20mg x 30kg =600mg/day to be given TID
600/3= 200mg per dose
2. 10.2ml _
The physician orders Tegretol (carbamazepine) 15mg/kg bid po.
Supply: Tegretol 100mg/5ml.
Patients weight: 30 lbs.
How many milliliters should be administered for one dose?
30lb/2.2= 13.6363636364= 13.6 kg
13.6 x 15 = 204 mg bid (FYI-total daily dose would be 408mg/day. This
question is asking how much per dose)
204mg x 5ml = 10.2 ml
100 mg
3.
____1 tab___ The physician orders Omnicef (cefdinir) 15mg/kg po q 12 hrs.
Supply: Omnicef 300mg tablets
Patients weight: 44 lbs
How many tablets are to be administered per dose?
44lb/2.2 = 20 kg
15 x 20= 300 mg q 12 hrs (FYI-total daily dose would be 600mg/day. This
question is also asking how much per dose)
300mg = 1 tablet
300mg
1/09
NUR246 PRACTICE DOSAGE CALCULATION ASSESSMENT ANSWERS
4.
_1.5 ml______ The physician orders Tagamet (cimetidine) oral suspension 10 mg/kg/day po to be
given in equally divided doses bid.
Patients weight: 40 lbs
Using the medication label supplied below, how many milliliters should be
administered per dose?
Mixing Directions:
Add 28 ml of water. Store
in refrigerator. Discard
after 10 days
Tagamet
(cimetidine)
Oral Suspension
300mg/5ml
40lb/2.2 = 18.18181818181= 18.2 kg
10 x 18.2 = 182 mg/day to be given bid 182/2= 91 mg per dose
91mg x 5ml = 1.51666666 = 1.5 ml
300mg
5.
____yes___
The physician orders Paveral (codeine sulfate) elixir 2.8 mg po q 6 hrs for pain.
The drug guide recommended dosage is 0.5-1 mg/kg/day
Patients weight: 34 lbs.
Is the physicians order safe?
34/2.2= 15.45454545454= 15.5 kg
0.5 x 15.5 = 7.75= 7.8 mg/day is the lower range
1 x 15.5= 15.5 mg/day is the higher range
Safe range is 7.8-15.5 mg/day
MD ordered 2.8 mg q 6 hrs = 2.8 x 4= 11.2 mg/day
11.2 falls in the safe range of 7.8-15.5= dose is safe
6.
____3.2 ml___ The physician orders Bumex (bumetanide) injection 0.1mg/kg IM stat.
Supply: Bumex 0.25mg/1ml.
Patients weight: 8 kg.
How many milliliters should be administered per dose?
0.1 x 8 kg = 0.8 mg IM state
0.8mg x 1ml = 3.2 ml
0.25mg
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NUR246 PRACTICE DOSAGE CALCULATION ASSESSMENT ANSWERS
7. __9.3ml____
The physician orders Duracef (cefadroxil) oral suspension po 30mg/kg/day in 2
divided doses.
Supply Duracef 250mg/5ml.
Patients weight: 68 lbs
How many milliliters should be administered per dose?
68 lb/2.2= 30.9090909091= 30.9 kg
30mg x 30.9kg= 927mg/day to be given bid
927mg/2= 463.5mg per dose
463.5mg x 5ml = 9.27 = 9.3ml
250 mg
8. ___3.5 ml___
The physician orders Felbamte (phenytoin) 15mg/kg po qid.
Patients weight: 60.8 lbs
Using the medication label supplied below, how many milliliters should be
administered per dose?
Mixing directions:
Add 30 ml of water
Mix Vigorously
Discard after 5 days
Felbamate
(phenytoin)
Oral suspension
600mg/5ml
60.8 lb/2.2= 27.6363636364= 27.6 kg
15mg x 27.6= 414mg given qid (FYI-total daily dose would be 1656mg/day.
This question is also asking how much per dose)
414 mg x 5ml = 3.45= 3.5 ml
600 mg
9. 124 mg
The physician orders sulfamethoxazole and trimethoprim (Bactrim)
Patients weight: 41 lbs
The recommended dose 15-20 mg /kg/day in divided doses every 6-8 hours.
What is the highest dose of Bactrim that can be administered ?
41 lb/2.2 = 18.63636364= 18.6 kg
20 mg x 18.6 = 372 mg/day
372 mg can be given q 6 or q 8
372/4 = 93 and 372/3 = 124 mg
The highest dose is therefore 124 mg
10.
___31 gtt/min___The physician orders IV fluids as follows: Infuse 500ml of 0.33% normal saline
solution in 4 hours IV.
Calculate the flow rate when the drop factor is 15 drops per milliliter
500 ml x 15 = 31.25 = 31 gtt/min
240 min
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NUR246 PRACTICE DOSAGE CALCULATION ASSESSMENT ANSWERS
1/09