How many mL until I panic?
You are instructed to administer 0.3 mg of epinephrine IM using a 1:1,000 concentration. How many mL will you give?
0.3 mL
(0.3 mg ÷ 1 mg/mL = 0.3 mL)
You are infusing 1,000 mL of NS over 2 hours. What is the rate in mL/hr?
500 mL/hr
(1000 mL ÷ 2 hr = 500 mL/hr)
What is the proper epinephrine IM dose (1:1,000) for a 15-kg child in anaphylaxis?
0.15 mL
(0.01 mg/kg × 15 kg = 0.15 mg → 0.15 mL of 1 mg/mL)
Your vial reads 1:1,000 epinephrine. What is the concentration in mg/mL?
1 mg/mL
(1:1,000 = 1 g in 1,000 mL = 1 mg/mL)
You must administer 1 liter of D5W over 8 hours using a microdrip set (60 gtt/mL). What is the drip rate in gtt/min?
125 gtt/min
(1000 mL ÷ 8 hr = 125 mL/hr ÷ 60 min = 2.08 mL/min × 60 gtt/mL = 125 gtt/min)
A patient needs 25 mg of diphenhydramine IV. The vial reads 50 mg/1 mL. How much will you draw up?
0.5 mL
(25 mg ÷ 50 mg/mL = 0.5 mL)
Using a 15 gtt/mL drip set, how many drops per minute (gtt/min) will you run to infuse 500 mL over 1 hour?
125 gtt/min
(500 mL ÷ 60 min = 8.33 mL/min × 15 gtt/mL = 125 gtt/min)
A child weighs 18 kg and needs acetaminophen at 15 mg/kg PO. How many mg should you administer?
270 mg
(15 mg/kg × 18 kg = 270 mg)
You are given a powdered medication that must be reconstituted with 4 mL of sterile water to yield a concentration of 500 mg/5 mL. How much volume contains 250 mg?
2.5 mL
(500 mg/5 mL → 250 mg ÷ 100 mg/mL = 2.5 mL)
You are preparing a magnesium sulfate infusion at 2 g over 10 minutes. You have a concentration of 1 g in 10 mL. How much volume will be infused per minute?
2 mL/min
(2 g = 20 mL → over 10 min = 2 mL/min)
A doctor orders 500 mg of a medication. You have a vial labeled 250 mg/2 mL. How many mL will you administer?
4 mL
(500 mg ÷ 125 mg/mL = 4 mL)
(250 mg in 2 mL = 125 mg/mL)
You’re ordered to run dopamine at 5 mcg/kg/min for a 70 kg patient. Dopamine is supplied as 400 mg in 250 mL D5W. What is the mL/hr rate?
13.1 mL/hr
(5 mcg × 70 kg = 350 mcg/min × 60 = 21,000 mcg/hr = 21 mg/hr)
(400 mg ÷ 250 mL = 1.6 mg/mL → 21 mg ÷ 1.6 = 13.1 mL/hr)
You are giving a 0.01 mg/kg dose of epinephrine 1:10,000 IV to a child weighing 25 kg. What dose in mg and mL will you give?
0.25 mg (2.5 mL)
(0.01 mg/kg × 25 kg = 0.25 mg → 0.25 mL of 1:10,000 [0.1 mg/mL])
A vial labeled “Add 10 mL diluent to yield 1 g/10 mL” is used. How many mL would you draw for a 250 mg dose?
2.5 mL
(1 g in 10 mL → 250 mg ÷ 100 mg/mL = 2.5 mL)
You are giving ketamine at 0.5 mg/kg IV to a 90-kg trauma patient. Ketamine is 100 mg/mL. How many mL will you give?
0.45 mL
(0.5 mg/kg × 90 kg = 45 mg → 100 mg/mL = 0.45 mL)
Administer 0.4 mg of naloxone IV. The vial is labeled 1 mg/mL. How many mL will you draw?
0.4 mL
(0.4 mg ÷ 1 mg/mL = 0.4 mL)
Lidocaine is mixed as 1 gram in 250 mL D5W. You need to infuse at 2 mg/min. What is the flow rate in mL/hr?
30 mL/hr
(1000 mg in 250 mL → 4 mg/mL)
(2 mg/min × 60 = 120 mg/hr → 120 ÷ 4 = 30 mL/hr)
Calculate the correct dose of diazepam IV for a pediatric seizure patient weighing 22 kg. The ordered dose is 0.3 mg/kg.
6.6 mg
(0.3 mg/kg × 22 kg = 6.6 mg)
A glucagon kit contains 1 mg of powder and a 1 mL vial of sterile solution. After mixing, what is the final concentration?
1 mg/mL
(1 mg mixed with 1 mL = 1 mg/mL)
A norepinephrine drip is running at 8 mcg/min. The solution is mixed as 4 mg in 250 mL. What is the rate in mL/hr?
4 mg in 250 mL = 16 mcg/mL
8 mcg/min × 60 = 480 mcg/hr
480 mcg ÷ 16 mcg/mL = 30 mL/hr
You need to give 2.5 mg of midazolam IM. The vial is 5 mg/mL. What volume do you administer?
0.5 mL
(2.5 mg ÷ 5 mg/mL = 0.5 mL)
A nitroglycerin drip is ordered at 10 mcg/min. The premixed solution is 100 mcg/mL. What is the infusion rate in mL/hr?
6 mL/hr
(10 mcg/min × 60 = 600 mcg/hr ÷ 100 mcg/mL = 6 mL/hr)
A pediatric patient needs 20 mL/kg of NS as a fluid bolus. The patient weighs 12 kg. How much NS do you give?
240 mL
(20 mL/kg × 12 kg = 240 mL)
After reconstitution, you have 2 g of ceftriaxone in 10 mL. How many mL will you give for a 1 g dose?
5 mL
(2 g in 10 mL = 0.2 g/mL → 1 g ÷ 0.2 = 5 mL)
You’re giving fentanyl at 1 mcg/kg IV to a 75-kg patient. The concentration is 50 mcg/mL. How many mL do you administer
1.5 mL
(1 mcg/kg × 75 kg = 75 mcg → 50 mcg/mL = 1.5 mL)