1 mg/ml of adrenaline (epinephrine) is good for cardiac arrest, but is too strong to treat a fall in blood pressure.

Question: How do you dilute adrenaline to a safe level?

Answer: Dilute 1 mg of adrenaline in 10 ml, with saline. 1 ml of this solution = 100 mcg (0.1 mg) of adrenaline.

Take 1 ml of the above solution, and dilute this to 10 ml with saline. This makes a solution where 1 ml contains 10 mcg or 0.01 mg of adrenaline.

Give 1 ml boluses of the weak 10 mcg solution as necessary.