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DOSAGE CALCULATIONS PRACTICE/66 QUESTIONS AND ANSWERS (A+)
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DOSAGE CALCULATIONS PRACTICE/66 QUESTIONS AND ANSWERS (A+)
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DOSAGECALCULATIONS
PRACTICE/66
QUESTIONS AND
ANSWERS (A+)
Order: Biaxin 200 mg p.o. q 12 h for a child who
weighs 45 lbs.
Have: Biaxin 125 mg per 5 mL
Biaxin label states 15 mg/kg/day in two equal
doses.
Is this dosage safe? - √Answer>1. Convert lbs to
kgs. 45lbs = 20.5 kg
2. Calculate the recommended dose per day. A
child weighing 20.5 kg can have 307.5 mg PER
DAY. So, divide 307.5 by 2 to get a single dose.
So, the maximum single dose is 153.75 mg.
3. NO, the ordered dose is not safe. The doctor
ordered 200 mg which is more than 153.75 mg.
>Quiz:How many mcg in a mg? - √Answer>1000
,>Quiz:Order: D5LR 1250 mL IV over 8 hours.
What is the infusion rate in mL/h? -
√Answer>Answer: 156 mL/h
Divide 1250 by 8
156.25 => 156
>Quiz:Order: Amoxil 200 mg q 8 h
Have: 50 mg/ml
Label: 20 to 40 mg/kg/day in divided doses every
8 hours.
The patient weighs 10 kg. Is this order safe? -
√Answer>1. First, calculate the minimum and
maximum dose per day. The minimum amount
would be 200 mg. (20 x 10) The maximum amount
would be 400 mg. (40 x 10)
2. Now, since the dose is given every 8 hours,
divide the minimum and maximum by 3, since 3
doses can be given in one day (24 hours). The
minimum single dose is 66.7 mg, and the
maximum single dose is 133.3 mg.
3. NO, the ordered dose is not safe. The doctor
ordered 200 mg for a single dose which is more
, than the maximum allowed single dose of 133.3
mg.
>Quiz:How many mL in a teaspoon (tsp)? -
√Answer>5
>Quiz:How many grams are in a kilogram? -
√Answer>1000
>Quiz:How many teaspoons are in a tablespoon?
- √Answer>3
>Quiz:How many ounces are in a pound? -
√Answer>16
>Quiz:How many pounds are in a kilogram? -
√Answer>2.2
>Quiz:Convert 21.3 kg to lbs. - √Answer>46.86
>Quiz:Tridil is infusing at 15 mL/hr on an infusion
pump. The drug is mixed 50 mg in 500 mL DsW.
How many mcg/min is the patient receiving? -
√Answer>Answer: 25 mcg/min
First, convert the 50 mg to mcg. 50 mg = 50,000
mcg
Now, how many mcg is in 1 mL?
50,000 mcg/500 mL = 100 mcg/mL
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