Dosage Calculations Practice Questions With
Complete Solutions
1 Dram = _____ mL Correct Answer 4
1 gm = _____ gr. Correct Answer 15
1 grain = ___ mg Correct Answer 64.8 mg (60)
1/4 gr. = _____ mg Correct Answer Answer: 15
Convert 1/4 to a decimal => 0.25, then solve
2 gm = _____ gr. Correct Answer 30
A child weighs 10 lb 2 oz. What is their weight in kg? Correct
Answer 1. First, convert the 2 oz to lbs. 2 oz is 0.1 lbs. This
gives you 10.1 lbs.
2. Now convert 10.1 lbs to kg.
3. Answer: 4.59 => 4.6 kg
A patient has a bottle of warfarin (Coumadin) 5 mg tablets at
home. After his most recent international normalized ratio
(INR), the doctor calls and tells him to take 7.5 mg/day. How
many tablets (scored) should the patient take? Correct Answer
1.5
,Calculate the patient's total urinary output for the shift. The
patient has continuous bladder irrigation and a Foley catheter.
0800-1000: 3 Liters of bladder irrigation
1000: emptied Foley catheter 3600 mL
1100: 1 Liter of bladder irrigation
1200: 2 Liters of bladder irrigation and emptied 3250 mL from
Foley catheter
1300: 1 Liter of bladder irrigation
1400: 1 Liter of bladder irrigation
1500: 1 Liter of bladder irrigation and emptied 3120 mL from
Foley Catheter
1600-1900: 3 Liters of bladder irrigation
1900: emptied 4200 mL from Foley catheter Correct Answer
Intake: 2170 mL
Remember, irrigation in NOT urine. You can not count it. The
patient received 3000 mL of irrigation from 0800-1000. When
the Foley cath was emptied at 10, there was a total of 3600 mL.
3000 mL of that was irrigation fluid. Only 600 mL was urine
and considered output.
Calculate the patients INTAKE during your 12-hour shift.
0800: Two pieces of toast, 2 cups of oatmeal, 8 oz yogurt, 12 oz
orange juice, 2 oz grits
1000: Two 8 oz of coffee w/ 2 oz of cream in each
1100: 24 oz of ice chips
1200: IV infusion of Zosyn 50 mL, 2 mL IV push Zofran and 10
cc saline IV flush
1230: house salad, 12 oz soda, three 12 oz popsicles
, 1400: One pack of red blood cells (250 mL)
1500: 2 mL Morphine and 10 cc saline flush IV
1715: 10 cc saline flush IV
1600-1900: Normal Saline IV 100 cc/hr Correct Answer
Intake: 3394 mL
Remember, intake is measured in mL. Convert all ounces to mL.
1 oz = 30 mL
Also, ice melts to ONE HALF the total ounces. So, 24 ounces of
ice melts to 12 ounces.
Do NOT count solids like the toast, oatmeal, yogurt, grits, or
salad. It has to be liquid at room temp to be counted.
Convert 0.3 g to kg. Correct Answer 300
Convert 0.3 g to mg. Correct Answer Answer: 300 mg
Since milli means 1000, just move the decimal 3 spots to the
right. Or, set up an equation as follows:
We know 1 g = 1000 mg.
1 g/1000 mg = 0.3 g/x
Solve for x by cross mulitiplying.
Convert 0.625 to a fraction. Correct Answer Write down 0.625
over 1. (0.625/1)
Complete Solutions
1 Dram = _____ mL Correct Answer 4
1 gm = _____ gr. Correct Answer 15
1 grain = ___ mg Correct Answer 64.8 mg (60)
1/4 gr. = _____ mg Correct Answer Answer: 15
Convert 1/4 to a decimal => 0.25, then solve
2 gm = _____ gr. Correct Answer 30
A child weighs 10 lb 2 oz. What is their weight in kg? Correct
Answer 1. First, convert the 2 oz to lbs. 2 oz is 0.1 lbs. This
gives you 10.1 lbs.
2. Now convert 10.1 lbs to kg.
3. Answer: 4.59 => 4.6 kg
A patient has a bottle of warfarin (Coumadin) 5 mg tablets at
home. After his most recent international normalized ratio
(INR), the doctor calls and tells him to take 7.5 mg/day. How
many tablets (scored) should the patient take? Correct Answer
1.5
,Calculate the patient's total urinary output for the shift. The
patient has continuous bladder irrigation and a Foley catheter.
0800-1000: 3 Liters of bladder irrigation
1000: emptied Foley catheter 3600 mL
1100: 1 Liter of bladder irrigation
1200: 2 Liters of bladder irrigation and emptied 3250 mL from
Foley catheter
1300: 1 Liter of bladder irrigation
1400: 1 Liter of bladder irrigation
1500: 1 Liter of bladder irrigation and emptied 3120 mL from
Foley Catheter
1600-1900: 3 Liters of bladder irrigation
1900: emptied 4200 mL from Foley catheter Correct Answer
Intake: 2170 mL
Remember, irrigation in NOT urine. You can not count it. The
patient received 3000 mL of irrigation from 0800-1000. When
the Foley cath was emptied at 10, there was a total of 3600 mL.
3000 mL of that was irrigation fluid. Only 600 mL was urine
and considered output.
Calculate the patients INTAKE during your 12-hour shift.
0800: Two pieces of toast, 2 cups of oatmeal, 8 oz yogurt, 12 oz
orange juice, 2 oz grits
1000: Two 8 oz of coffee w/ 2 oz of cream in each
1100: 24 oz of ice chips
1200: IV infusion of Zosyn 50 mL, 2 mL IV push Zofran and 10
cc saline IV flush
1230: house salad, 12 oz soda, three 12 oz popsicles
, 1400: One pack of red blood cells (250 mL)
1500: 2 mL Morphine and 10 cc saline flush IV
1715: 10 cc saline flush IV
1600-1900: Normal Saline IV 100 cc/hr Correct Answer
Intake: 3394 mL
Remember, intake is measured in mL. Convert all ounces to mL.
1 oz = 30 mL
Also, ice melts to ONE HALF the total ounces. So, 24 ounces of
ice melts to 12 ounces.
Do NOT count solids like the toast, oatmeal, yogurt, grits, or
salad. It has to be liquid at room temp to be counted.
Convert 0.3 g to kg. Correct Answer 300
Convert 0.3 g to mg. Correct Answer Answer: 300 mg
Since milli means 1000, just move the decimal 3 spots to the
right. Or, set up an equation as follows:
We know 1 g = 1000 mg.
1 g/1000 mg = 0.3 g/x
Solve for x by cross mulitiplying.
Convert 0.625 to a fraction. Correct Answer Write down 0.625
over 1. (0.625/1)
