Question

A 53.6-lb (24.4-kg) dog is in cardiopulmonary arrest. A 0.2-mg/kg dose of epinephrine is required. What volume of 1:1000 epinephrine must be drawn up for administration?

A. 0.05 mL
B. 0.5 mL
C. 5 mL
D. 50 mL

Answer 1

The correct volume of 1:1000 epinephrine solution to be drawn up for a 53.6-lb (24.4-kg) dog with a required dosage of 0.2 mg/kg is 5 mL.

Step-by-step explanation:

The question refers to calculating the volume of a 1:1000 epinephrine solution for a dog in cardiopulmonary arrest based on a dosage of 0.2 mg/kg. First, we must find the total dosage required for the dog, which is 24.4 kg by multiplying 24.4 kg by 0.2 mg/kg, yielding a dosage of 4.88 mg. Next, because the solution is 1:1000, this indicates that there is 1 mg of epinephrine per 1 mL of solution. Therefore, to find the volume required, we divide the dosage needed by the concentration: 4.88 mg / (1 mg/mL) = 4.88 mL. Since 0.5 mL is not close enough and 50 mL would be far too much, the correct volume to be drawn up for administration is 5 mL.