Question

Use the label (where provided) to obtain the necessary information. Round answers to the nearest tenth where indicated.

Order: Ceftriaxone 0.5 g IV q12h

Available:



a. How many milliliters of diluent will you add to reconstitute the solution for IV use? _____ mL

b. What is the dosage strength of the reconstituted solution for IV use? _____

c. How many milliliters will you administer? __________ mL

Answer 1

A vial of Ceftriaxone contains 1000mg in 5ml.

Given order - Ceftriaxone 0.5g q12h that means 500 mg ceftriaxone to be given IV 12 hourly.

a. We have to add 5ml of the diluent to reconstitute the vial solution for IV use.

b. We have to administer half of the reconstituted solution to the patient every 12 hourly as the given dosage is of 500 mg only.

The dosage strength of this solution is 1000mg/5ml which is 200 mg/ml

c. Since we have to give 500 mg 12 hourly and dosage strength is 200mg/ml, we need to give 2.5 ml of the solution