Question

The nurse is to administer azithromycin 350 mg IV to the patient with pelvic inflammatory disease. The pharmacy sends a 2.5 g vial of azithromycin. The label states: Prepare the initial solution of azithromycin for injection by adding 4.8 mL of Sterile Water for Injection to the 500 mg vial. For the pharmacy bulk (2.5 g / vial), add 23 mL of Sterile Water for Injection. Shake the vial until all of the drug is dissolved. . . . Each mL of reconstituted solution contains 100 mg azithromycin. How many mL will the nurse administer to the patient? ________

Answer 1

ANSWER

* Dose ordered for administration to patient = 350 mg.

* Quanity of drug present per ml after reconstitution =100mg.

         * Amount wanted to give to the patient in mL

                         Formula = Dose ordered(mg) * Quantity (ml) / Have (mg)

                                       = 350 * 1 /100

                                       = 350 /100

                                       = 3.5 ml