Cefazolin sodium dosage and administration

# Dosage and Administration
Cefazolin for Injection USP, Pharmacy Bulk Package bag SmartPak should be used only in patients who require a 1 gram dose and not any fraction thereof.
Cefazolin for Injection USP, Pharmacy Bulk Package bag SmartPak should not be used in patients who require less than the 1 gram dose of Cefazolin.
THIS PHARMACY BULK PACKAGE REQUIRES RECONSTITUTION WITH STERILE WATER FOR INJECTION, USP TO A CONCENTRATION OF 100 mg per mL AND FURTHER DILUTION IN 50 mL OF A COMPATIBLE SOLUTION.

## Adult Population
Cefazolin for Injection, USP, Pharmacy Bulk Package bag SmartPak should be used only in patients who require a 1 gram dose and not any fraction thereof. Cefazolin for Injection USP, Pharmacy Bulk Package bag SmartPak should not be used in patients who require less than the 1 gram dose of Cefazolin.
Cefazolin for Injection should be reconstituted with Sterile Water for Injection, USP to a concentration of 100 mg per mL and further diluted in 50 mL of a compatible solution. The recommended adult dosages are outlined in Table 1. Cefazolin for Injection, USP, Pharmacy Bulk Package SmartPak should be used only in patients who require a 1 gram dose and not any fraction thereof. Cefazolin for Injection should be administered intravenously (IV) over approximately 30 minutes.

## Perioperative Prophylactic Use
Cefazolin for Injection, USP, Pharmacy Bulk Package bag SmartPak should be used only in patients who require a 1 gram dose and not any fraction thereof.
Cefazolin for Injection USP, Pharmacy Bulk Package bag SmartPak should not be used in patients who require less than the 1 gram dose of cefazolin.
To prevent postoperative infection in contaminated or potentially contaminated surgery, recommended doses are:
1 gram to 2 grams I.V. administered 12 hour to 1 hour prior to the start of surgery.
For lengthy operative procedures (e.g., 2 hours or more), 500 mg to 1 gram I.V. during surgery (administration modified depending on the duration of the operative procedure).
500 mg to 1 gram I.V. every 6 to 8 hours for 24 hours postoperatively.
It is important that (i) the preoperative dose be given just (12 to 1 hour) prior to the start of surgery so that adequate antibacterial concentrations are present in the serum and tissues at the time of initial surgical incision; and (ii) cefazolin may be administered, if necessary, at appropriate intervals during surgery to provide sufficient concentrations of the antibacterial drug at the anticipated moments of greatest exposure to infective organisms. The prophylactic administration of cefazolin should usually be discontinued within a 24-hour period after the surgical procedure. In surgery where the occurrence of infection may be particularly devastating (e.g., open-heart surgery and prosthetic arthroplasty), the prophylactic administration of cefazolin may be continued for 3 to 5 days following the completion of surgery.

## Patients with Renal Impairment
Cefazolin for Injection, USP, Pharmacy Bulk Package bag SmartPak should be used only in patients who require a 1 gram dose and not any fraction thereof.
Cefazolin for Injection USP, Pharmacy Bulk Package bag SmartPak should not be used in patients with renal impairment who require less than the 1 gram dose of cefazolin. Cefazolin may be used in patients with renal impairment with the dosage adjustments outlined in Table 2. All reduced dosage recommendations apply after an initial loading dose appropriate to the severity of the infection.

## Preparation for Use of Cefazolin for Injection, USP bag SmartPak Pharmacy Bulk Package
Cefazolin for Injection, USP, Pharmacy Bulk Package bag SmartPak should be used only in patients who require a 1 gram dose and not any fraction thereof.
Cefazolin for Injection USP, Pharmacy Bulk Package bag SmartPak should not be used in patients who require less than the 1 gram dose of cefazolin.