Calculating Dosages
Calculate the single dose in mL for the following O/L:
Cephalexin 0.275g tid
Available: 250mg/5mL
5.5mL
How long will the following RX last:
Amoxicillin 250mg/5mL, Mitte: 100mL
Sig: 7.5mL BID
6 days
Convert the following to Arabic numbers:
XLVII
47
A patient is experiencing anaphylaxis and is ordered to receive epinephrine 0.01ml/kg. The patient weighs 143 lbs. How many ml are needed to administer this dose?
0.65ml
How many tsp are in 4 tbsp?
12 tsp
Calculate the single dose in mL for the following O/L:
ERYC 175mg bid
Available: 400mg/5mL, pack size 150mL
2.19mL
What is the day supply for the following RX:
Loratadine 1mg/mL, Mitte 150mL
Sig: 2 tsp QAM
15 days
A label reads: “Take ʒss PO at bedtime.”
How many mL should the patient take per dose?
2.5mL
A 6-year-old child is receiving theophylline IV. The order is for 4.5mg/kg. The child weighs 54 lbs. What dose in milligrams will the child receive?
110.5mg
How many 2 tsp doses are in 5 fl oz of liquid medication?
15 doses
Calculate the single dose in mL for the following O/L:
Lanoxin 0.075 mg daily
Available: 50 ug/mL
1.5mL
How long will the following RX last:
cyproheptadine 0.4mg/mL, Mitte: 210mL
Sig: 2mg tid
14 days
You need to compound a liquid with a final volume of ʒxx.
How many mL will that be?
100mL
Dopamine hydrochloride 5mcg/kg is ordered for a patient in shock who weighs 105kg. How many milligrams is that?
0.52mg
What is 84°F converted to Celsius?
28.9°C
Calculate the single dose in mL for the following O/L:
Cloxacillin 187 mg tid x 7 d
Available: 125mg/5 mL
7.48mL
How long will the following RX last:
erythromycin 80mg/mL, Mitte: 300mL
Sig: ʒiss qid
10 days
Convert the following to Arabic numbers:
MMMCMXC
3990
How many milligrams of medication are required to administer a 0.025mg/kg dose of ibutilide fumarate to a 176-pound man with arrhythmia?
2mg
A patient presents in the emergency room with a fever of 41° C. What is the patient's temperature in Fahrenheit?
105.8°F
A mother needs to administer ibuprofen 250 mg to her child to reduce fever. It is available as
ibuprofen 75 mg/½ tsp. How many ml should she administer?
8.33mL
How long will the following RX last:
Codeine syrup 5mg/mL, Mitte: ℥v
Sig: 5.5mL bid prn
13 days
What is the total quantity to dispense for the following Rx:
Codeine syrup 5mg/mL, Mitte: ℥v
Sig: 5.5mL hs prn
150mL
An 8-year-old child who weighs 82lbs is scheduled to receive gabapentin 25mg/kg/day divided into three doses. How many milligrams will the child receive for one dose?
310.6mg
A patient is prescribed 3.5 ounces of an oral liquid medication per day. The medication is to be taken in 4 equal doses daily. How many mL should the patient take per dose?
26.25mL