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Wheeless' Textbook of Orthopaedics

Cefazolin/Ancef



- See:
        - first generation ceph
        - antibiotic prophyalxis

- Adult: 0.5-2gm q8hr IM/IV; t1/2=2h; Max dose: 6 gm/24hr;
        - surgical prophylaxis: 1gm IM/IV 30-60min before surgery and 500mg - 1gm q6-8hr afterwards for 24hr;
- Peds: ( > 4 yrs): 100 mg/kg/24 hr

- Caution:
    - w/ allergy to Penicillin and contraindicated with allergry to cephalosporin;
    - Dosing Regimens for Patients with Renal Insufficiency:  (Dose for 70 kg Adult (gm/dosing interval in hours)):
           - 70-80 % of dose will be excreted in urine;
           CrCl > 80  1 q  8
           CrCl 50-79    1 q  8
           CrCl 30-49    1 q 12
           CrCl 10-29    0.5 q 12




- w/ osteomyelitis:
   Dose IV      Time p Admin.       Mean Ser conc (ug/ml)      Mean Bone conc (ug/gm)
    50 mg/kg      180 min                           10                                           4
       1 gm             50                                  70                                         15




- References




Original Text by Clifford R. Wheeless, III, MD.