Numeracy

Question 1

A patient is prescribed 600 mg of a medication. The stock solution contains 300 mg in 2 mL. How many mL should be administered?

Answer 1

(600 ÷ 300) × 2 = 4 mL

Question 2

Convert 0.075 g to mg.

Answer 2

0.075 × 1000 = 75 mg

Question 3

How many mg/mL is a 1 in 1000 solution?

Answer 3

1 in 1000 = 1 mg/mL

Question 4

A patient weighing 70 kg requires 0.5 mg/kg of a drug. What is the total dose in mg?

Answer 4

70 × 0.5 = 35 mg

Question 5

You have a 1% solution. How many mg are in 4 mL?

Answer 5

1% = 10 mg/mL -> 10 × 4 = 40 mg

Question 6

What is the correct mL/hr rate to administer 1000 mL over 8 hours?

Answer 6

1000 ÷ 8 = 125 mL/hr

Question 7

Explain the pharmacokinetics of metformin and how renal impairment affects its use.

Answer 7

Metformin is excreted renally. In renal impairment, clearance is reduced, increasing risk of accumulation and lactic acidosis. Dose adjustment or cessation is necessary.

Question 8

What is the mechanism of action of beta blockers?

Answer 8

They block beta-adrenergic receptors, reducing heart rate and blood pressure.

Question 9

Convert 2500 mcg to mg.

Answer 9

2500 ÷ 1000 = 2.5 mg

Question 10

A prescription requires 300 mg to be given. Tablets are 150 mg each. How many tablets are needed?

Answer 10

300 ÷ 150 = 2 tablets