Dosage Calculations
Practice | Nursing Study
Guide, Practice Questions
& Exam Prep
|Guaranteed success|
, Order: Biaxin 200 mg p.o. q 12 h for a child who weighs 1. Convert lbs to kgs. 45lbs = 20.5 kg
45 lbs.
Have: Biaxin 125 mg per 5 mL 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
Biaxin label states 15 mg/kg/day in two equal doses. single dose is 153.75 mg.
Is this dosage safe? 3. NO, the ordered dose is not safe. The doctor ordered 200 mg which is more
than 153.75 mg.
How many mcg in a mg? 1000
Order: D5LR 1250 mL IV over 8 hours. Answer: 156 mL/h
What is the infusion rate in mL/h? Divide 1250 by 8
156.25 => 156
Order: Amoxil 200 mg q 8 h 1. First, calculate the minimum and maximum dose per day. The minimum
Have: 50 mg/ml amount would be 200 mg. (20 x 10) The maximum amount would be 400 mg. (40
x 10)
Label: 20 to 40 mg/kg/day in divided doses every 8
hours. 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
The patient weighs 10 kg. Is this order safe? 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.
How many mL in a teaspoon (tsp)? 5
How many grams are in a kilogram? 1000
How many teaspoons are in a tablespoon? 3
How many ounces are in a pound? 16
How many pounds are in a kilogram? 2.2
Convert 21.3 kg to lbs. 46.86
Tridil is infusing at 15 mL/hr on an infusion pump. The Answer: 25 mcg/min
drug is mixed 50 mg in 500 mL DsW. How many
mcg/min is the patient receiving? 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
Now, how many mcg/hr is the pt receiving?
100 mcg x 15 mL = 1,500 mcg/hr
So, 1500 mcg/60 min = 25 mcg/min
How many mL in a tablespoon (T or tbs)? 15
Practice | Nursing Study
Guide, Practice Questions
& Exam Prep
|Guaranteed success|
, Order: Biaxin 200 mg p.o. q 12 h for a child who weighs 1. Convert lbs to kgs. 45lbs = 20.5 kg
45 lbs.
Have: Biaxin 125 mg per 5 mL 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
Biaxin label states 15 mg/kg/day in two equal doses. single dose is 153.75 mg.
Is this dosage safe? 3. NO, the ordered dose is not safe. The doctor ordered 200 mg which is more
than 153.75 mg.
How many mcg in a mg? 1000
Order: D5LR 1250 mL IV over 8 hours. Answer: 156 mL/h
What is the infusion rate in mL/h? Divide 1250 by 8
156.25 => 156
Order: Amoxil 200 mg q 8 h 1. First, calculate the minimum and maximum dose per day. The minimum
Have: 50 mg/ml amount would be 200 mg. (20 x 10) The maximum amount would be 400 mg. (40
x 10)
Label: 20 to 40 mg/kg/day in divided doses every 8
hours. 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
The patient weighs 10 kg. Is this order safe? 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.
How many mL in a teaspoon (tsp)? 5
How many grams are in a kilogram? 1000
How many teaspoons are in a tablespoon? 3
How many ounces are in a pound? 16
How many pounds are in a kilogram? 2.2
Convert 21.3 kg to lbs. 46.86
Tridil is infusing at 15 mL/hr on an infusion pump. The Answer: 25 mcg/min
drug is mixed 50 mg in 500 mL DsW. How many
mcg/min is the patient receiving? 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
Now, how many mcg/hr is the pt receiving?
100 mcg x 15 mL = 1,500 mcg/hr
So, 1500 mcg/60 min = 25 mcg/min
How many mL in a tablespoon (T or tbs)? 15
