Question

A client is prescribed cefazolin sodium (Ancef) 300 mg intramuscular injection every 8 hours. The PN has a 500 mg vial of medication that will be reconstituted with 2 mL of sterile water for injection. After reconstitution the volume of medication will be 2.5 ml. How many ml of medication will the PN provide in one dose for the client?

Answer 1

To calculate the amount of medication the PN will provide in one dose for the client, we need to determine the concentration of the reconstituted medication and set up a proportion to solve for the volume of medication. The PN will provide 120 mL of medication in one dose for the client.

Step-by-step explanation:

To calculate the amount of medication the PN will provide in one dose for the client, we need to determine the concentration of the reconstituted medication. The client is prescribed 300 mg of cefazolin sodium, and after reconstitution with 2 mL of sterile water for injection, the volume of medication will be 2.5 mL. This means that the concentration of the medication is 300 mg/2.5 mL.

To find out how many mL of medication the PN will provide in one dose for the client, we need to set up a proportion:

(300 mg/2.5 mL) = (x mL/1 dose)

Cross-multiplying, we have:

300 mg * 1 dose = 2.5 mL * x mL

Simplifying, we get:

300 mg = 2.5x mL

Dividing both sides of the equation by 2.5, we find:

x = 120 mL

Therefore, the PN will provide 120 mL of medication to the client in one dose.