AHI Math 15
1. A 7 mcg/kg/min dosage is ordered for an adult weighing 81.3 kg. The solution available is 400 mg in
250 mL. Calculate dosage (in mcg/min) to the nearest tenth and flow rate (in mL/hr) to the nearest
whole number. 569.1 mcg/min 21 mL/hr
2. A solution of 100 mg in 500 mL is ordered to infuse at 0.9 mcg/kg/min for a patient weighing 74.3 kg.
Calculate dosage (in mcg/min) to the nearest tenth and flow rate (in mL/hr) to the nearest whole
number. 66.9 mcg/min 20 mL/hr
3. An adult weighing 64 kg has an infusion ordered at 6 mcg/kg/min. The solution strength is 600
mg/500mL. Calculate dosage (in mcg/min) to the nearest tenth and flow rate (in mL/hr) to the nearest
whole number. 384 mcg/min 19 mL/hr
4. The order is to infuse 90 mcg/kg/min to a patient weighing 81.7 kg. The solution strength is 3 g / 250
mL. Calculate dosage (in mcg/min) to the nearest tenth and flow rate (in mL/hr) to the nearest whole
number. 7353 mcg/min 37 mL/hr
5. A solution of 500 mg in 1000 mL is to infuse between 0.4 and 0.8 mg/kg/hr for a patient weighing 61.4
kg. Calculate dosage range in mg/hr and flow rate range in mL/hr.
**Directions needed to specify tenth place for both answers
6.
7.
8.
9.
10.
12.
24.6 – 49.1 mg/hr 49.2 – 98.2 mL/hr
An adult whose weight is 106.2 kg is to receive a dosage of 3-6 mg/kg/hr. The solution strength is
1 g / 500 mL. Calculate dosage range in mg/hr and flow rate range in mL/hr.
*Directions needed to specify tenth place for first answer
318.6 – 637.2 mg/hr 159 – 319 mL/hr
The available solution strength is 500 mg in 500 mL. The order is to titrate the dosage from 2-5
mg/kg/hr for a patient weighing 60 kg. Calculate dosage range in mg/hr and flow rate range in mL/hr.
120 – 300 mg/hr 120 – 300 mL/hr
The order is to titrate 0.6 mg/kg/hr -0.8 mg/kg/hr for a client weighing 91.3 kg. The solution strength is
1000 mg / 1 L. Calculate dosage range in mg/hr and flow rate range in mL/hr.
*Directions needed to specify tenth place for first answer
54.8 – 73 mg/hr 55 – 73 mL/hr
A drug is ordered to titrate between 4 and 6 mcg/kg/min. The body weight is 78.6 kg and the solution
strength is 200 mg/100 mL. Calculate the dosage range in mcg/min and flow rate range in mL/hr.
314.4 – 471.6 mcg/min *Directions needed to specify tenth place
9 – 14 mL/hr
A 400 mg in 250 mL solution is ordered for a 89.7 kg patient to titrate between 4 and 10 mcg/kg/min.
Calculate the dosage range in mcg/min and flow rate range in mL/hr.
358.8 – 897 mcg/min *Directions needed to specify tenth place 13 – 34 mL/hr
An adult who weighs 90.7 kg has orders for 6-9 mcg/kg/min. The solution contains 800 mg in 500 mL.
Calculate the dosage range in mcg/min and flow rate range in mL/hr.
544.2 – 816.3 mcg/min *Directions needed to specify tenth place 20 – 31 mL/hr
13. A solution of 100 mg/250 mL is infusing at 25 mL/hr. Calculate the dose currently infusing in mcg/min
to the nearest whole number.
167 mcg/min
14. The infusion is running at 14 mL/hr. The solution strength is 150 mg in 100 mL. Calculate the dose
currently infusing in mcg/min to the nearest whole number.
350 mcg/min