Question

The physician orders Lanoxin(digoxin)0.375 mg po every day. On hand you have 0.25mg/5 mL. How many mL would you give your patient?

A) 8 mL
B) 7.5 mL
C) 7 mL
D) 5.5 m

Answer 1

To administer a 0.375 mg dose of Lanoxin with a solution concentration of 0.25 mg/5 mL, one would need to give 7.5 mL of the solution.

Step-by-step explanation:

The physician has ordered Lanoxin (digoxin) 0.375 mg per day, and we have a solution that has a concentration of 0.25 mg/5 mL. To determine the necessary dosage in milliliters, we will set up a proportion.

1. Write down the ordered dose: 0.375 mg.
2. Write down the concentration of the solution on hand: 0.25 mg per 5 mL.
3. Set up a proportion to find the volume needed for the ordered dose.

Proportion Set Up:

(0.25 mg / 5 mL) = (0.375 mg / x mL)

Cross multiply to solve for x:

0.25 mg * x mL = 0.375 mg * 5 mL

Calculate x:

x = (0.375 mg * 5 mL) / 0.25 mg

x = 7.5 mL

7.5 mL, which is the volume of Lanoxin solution needed to administer the prescribed 0.375 mg dose.