Deck 20: IV Medication and Titration Calculations

Question 1

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.

Answer 1

359-897 mcg/min; 13-34 mL/hr
4 mcg/kg/min × 89.7 kg = 358.8 = 359 mcg/min
10 mcg/kg/min × 89.7 kg = 471.6 = 897 mcg/min
The dosage range is 359-897 mcg/min.
359 mcg/min × 60 min/hr = 21,540 mcg/hr
21,540 mcg/hr ÷ 1000 mcg/mg = 21.54 = 21.5 mg/hr
897 mcg/min × 60 min/hr = 53,280 mcg/hr
53,280 mcg/hr ÷ 1000 mcg/mg = 53.82 = 53.8 mg/hr The flow rate range is 13-34 mL/hr.

Question 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.

Answer 2

66.9 mcg/min; 20 mL/hr
0.9 mcg/kg/min × 74.3 kg = 66.87 = 66.9 mcg/min
66.9 mcg/min × 60 min = 4014 mcg/hr
4014 mcg/hr ÷ 1000 mcg/mg = 4.01 = 4 mg/hr

Question 3

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.

Answer 3

25-49 mg/hr; 50-98 mL/hr
0.4 mg/kg/hr × 61.4 kg = 24.56 = 25 mg/hr
0.8 mg/kg/hr × 61.4 kg = 49.12 = 49 mg/hr
The dosage range is 25-49 mg/hr. The flow rate range is 50-98 mL/hr.

Question 4

A 35 mg/hr dosage is ordered and a 250 mg in 250 mL solution is available. Calculate the flow rate in mL/hr.

Question 5

A patient weighs 53.1 kg. The order is to infuse 2 mcg/kg/min of a solution whose strength is 250 mg in 250 mL. Calculate dosage (in mcg/min) to the nearest tenth and flow rate (in mL/hr) to the nearest whole number.

Question 6

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.

Question 7

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.

Question 8

The order is to infuse 90 mcg/kg/min to a patient weighing 81.7 kg. The solution strength is 3 g in 250 mL. Calculate dosage (in mcg/min) to the nearest tenth and flow rate (in mL/hr) to the nearest whole number.

Question 9

A 250 mL solution with 2 mg of a drug is to be infused at 7 mcg/min. Calculate the flow rate in mL/hr.

Question 10

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.

Question 11

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.

Question 12

An adult weighing 71.8 kg has an order to titrate between 3.5 and 6 mg/kg/hr. The solution available contains 500 mg in 250 mL. Calculate dosage range in mg/hr and flow rate range in mL/hr.

Question 13

The order is to titrate a solution of 250 mg in 250 mL at 15-18 mcg/kg/min. The patient weighs 59 kg. Calculate the dosage range in mcg/min and flow rate range in mL/hr.

Question 14

A drug has been ordered for an adult weighing 68.6 kg to titrate at 8-12 mcg/kg/min. The solution available is 500 mg in 250 mL. Calculate the dosage range in mcg/min and flow rate range in mL/hr.

Question 15

The order is to titrate 0.6-0.8 mg/kg/hr for a client weighing 91.3 kg. The solution strength is 1000 mg in 1 L. Calculate dosage range in mg/hr and flow rate range in mL/hr.

Question 16

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 in 500 mL. Calculate dosage range in mg/hr and flow rate range in mL/hr.

Question 17

A 14 mcg/min dosage using a 10 mg in 250 mL solution is ordered. Calculate the flow rate in mL/hr.

Question 18

An adult weighing 64 kg has an infusion ordered at 6 mcg/kg/min. The solution strength is 600 mg/500 mL. Calculate dosage (in mcg/min) to the nearest tenth and flow rate (in mL/hr) to the nearest whole number.

Question 19

Infuse 8 mg/min from a 500 mg/250 mL solution. Calculate the flow rate in mL/hr.

Question 20

A 4 g in 500 mL dosage is to infuse at 2 mg/min. Calculate the flow rate in mL/hr.

Question 21

An infusion of 300 mg/250 mL is infusing at a rate of 38 mL/hr. Calculate the dose currently infusing in mcg/min to the nearest whole number.

Question 22

A solution of 600 mg/500 mL is infusing at 60 mL/hr. Calculate the dose currently infusing in mcg/min to the nearest whole number.

Question 23

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.

Question 24

An infusion is running at 3 mL/hr. The solution strength is 1 g in 500 mL. Calculate the dose currently infusing in mcg/min to the nearest whole number.

Question 25

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.